LoFP LoFP / elastic

elastic

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a database instance may be created by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. instances creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
a dlp policy may be removed by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
a domain may be transferred to another aws account by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. domain transfers from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
a domain transfer lock may be disabled by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. activity from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
a elasticache security group deletion may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. security group deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
a elasticache security group may be created by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. security group creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
a group may be created by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. group creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
a kms customer managed key may be disabled or scheduled for deletion by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. key deletions by unfamiliar users should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
a legitimate vba for outlook is usually configured interactively via outlook.exe.
a log stream may be deleted by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. log stream deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
a malware filter policy may be deleted by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
a malware filter rule may be deleted by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
a mfa device may be deactivated by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. mfa device deactivations from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
a misconfgured network application or firewall may trigger this alert. security scans or test cycles may trigger this alert.
a misconfigured service account can trigger this alert. a password change on an account used by an email client can trigger this alert. security test cycles that include brute force or password spraying activities may trigger this alert.
a new and unusual program or artifact download in the course of software upgrades, debugging, or troubleshooting could trigger this alert. users downloading and running programs from unusual locations, such as temporary directories, browser caches, or profile paths could trigger this alert.
a new role may be assigned to a management group by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
a new transport rule may be created by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
a newly installed program or one that rarely uses the network could trigger this alert.
a newly installed program or one that runs rarely as part of a monthly or quarterly workflow could trigger this alert.
a newly installed program or one that runs very rarely as part of a monthly or quarterly workflow could trigger this detection rule.
a newly installed program, or one that runs under a new or rarely used user context, could trigger this detection rule. manual interrogation of the metadata service during debugging or troubleshooting could trigger this rule.
a private hosted zone may be asssociated with a vpc by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. if known behavior is causing false positives, it can be exempted from the rule.
a resource group may be deleted by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. resource group deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
a safe attachment rule may be disabled by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
a security group may be created by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. security group creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
a service principal may be created by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. service principal additions from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
a transport rule may be modified by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
a user may generate a shared access link to encryption key files to share with others. it is unlikely that the intended recipient is an external or anonymous user.
a user may have multiple sessions open at the same time, such as on a mobile device and a laptop.
a user may report suspicious activity on their okta account in error.
a user sending emails using personal distribution folders may trigger the event.
a windows administrator may have triggered a low-fidelity credential access alert during a legitimate administrative action. following this, the administrator may have reset the mfa credentials for themselves and then logged into the okta console for ad directory services integration management.
access level modifications may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. access level modifications from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
adding users to a specified group may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. user additions from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
administrator roles may be assigned to okta users by a super admin user. verify that the behavior was expected. exceptions can be added to this rule to filter expected behavior.
administrators may add external users to groups to share files and communication with them via the intended recipient be the group they are added to. it is unlikely an external user account would be added to an organization's group where administrators should create a new user account.
administrators may create custom email routes in google workspace based on organizational policies, administrative preference or for security purposes regarding spam.
administrators may remove 2-step verification (2sv) temporarily for testing or during maintenance. if 2sv was previously enabled, it is not common to disable this policy for extended periods of time.
administrators may temporarily disabled bitlocker on managed devices for maintenance, testing or to resolve potential endpoint conflicts.
administrators may transfer file ownership during employee leave or absence to ensure continued operations by a new or existing employee.
administrators may use the command prompt for regular administrative tasks. it's important to baseline your environment for network connections being made from the command prompt to determine any abnormal use of this tool.
administrators may use the tasklist command to display a list of currently running processes. by itself, it does not indicate malicious activity. after obtaining a foothold, it's possible adversaries may use discovery commands like tasklist to get information about running processes.
an administrator may need to attach a hostpath volume for a legitimate reason. this alert should be investigated for legitimacy by determining if the kuberenetes.audit.requestobject.spec.volumes.hostpath.path triggered is one needed by its target container/pod. for example, when the fleet managed elastic agent is deployed as a daemonset it creates several hostpath volume mounts, some of which are sensitive host directories like /proc, /etc/kubernetes, and /var/log. add exceptions for trusted container images using the query field \"kubernetes.audit.requestobject.spec.container.image\"
an administrator may need to exec into a pod for a legitimate reason like debugging purposes. containers built from linux and windows os images, tend to include debugging utilities. in this case, an admin may choose to run commands inside a specific container with kubectl exec ${pod_name} -c ${container_name} -- ${cmd} ${arg1} ${arg2} ... ${argn}. for example, the following command can be used to look at logs from a running cassandra pod: kubectl exec cassandra --cat /var/log/cassandra/system.log . additionally, the -i and -t arguments might be used to run a shell connected to the terminal: kubectl exec -i -t cassandra -- sh
an administrator may submit this request as an \"impersonateduser\" to determine what privileges a particular service account has been granted. however, an adversary may utilize the same technique as a means to determine the privileges of another token other than that of the compromised account.
an administrator or developer may want to use a pod that runs as root and shares the host's ipc, network, and pid namespaces for debugging purposes. if something is going wrong in the cluster and there is no easy way to ssh onto the host nodes directly, a privileged pod of this nature can be useful for viewing things like iptable rules and network namespaces from the host's perspective. add exceptions for trusted container images using the query field \"kubernetes.audit.requestobject.spec.container.image\"
an anti-phishing policy may be deleted by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
an anti-phishing rule may be deleted by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
an okta admnistrator may be logged into multiple accounts from the same host for legitimate reasons.
an rds security group deletion may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. security group deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
an rds security group may be created by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. security group creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
anonymous access to the api server is a dangerous setting enabled by default. common anonymous connections (e.g., health checks) have been excluded from this rule. all other instances of authorized anonymous requests should be investigated.
application credential additions may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. application credential additions from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
applications can be added and removed from blocklists by google workspace administrators, but they can all be explicitly allowed for users. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
applications can be added to a google workspace domain by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
applications for password management.
approved third-party applications that use google drive download urls.
assignment of rights to a service account.
authorization rule additions or modifications may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. authorization rule additions or modifications from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
authorized heavy usage of the system that is business justified and monitored.
authorized softwareupdate settings changes
authorized third party network logon providers.
automated processes that attempt to authenticate using expired credentials and unbounded retries may lead to false positives.
automated processes that use terraform may lead to false positives.
automated tools such as jenkins may encode or decode files as part of their normal behavior. these events can be filtered by the process executable or username values.
azure front web application firewall (waf) policy deletions may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. azure front web application firewall (waf) policy deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
because these ports are in the ephemeral range, this rule may false under certain conditions such as when a nated web server replies to a client which has used a port in the range by coincidence. in this case, such servers can be excluded if desired. some cloud environments may use this port when vpns or direct connects are not in use and database instances are accessed directly across the internet.
because this port is in the ephemeral range, this rule may false under certain conditions, such as when a nated web server replies to a client which has used a port in the range by coincidence. in this case, such servers can be excluded. some applications may use this port but this is very uncommon and usually appears in local traffic using private ips, which this rule does not match. some cloud environments, particularly development environments, may use this port when vpns or direct connects are not in use and cloud instances are accessed across the internet.
benign files can trigger signatures in the built-in virus protection
blob permissions may be modified by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
bucket components may be deleted by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. bucket component deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
build servers and ci systems can sometimes trigger this alert. security test cycles that include brute force or password spraying activities may trigger this alert.
build systems, like jenkins, may start processes in the `/tmp` directory. these can be exempted by name or by username.
business travelers who roam to new locations may trigger this alert.
business workflows that occur very occasionally, and involve a business relationship with an organization in a country that does not routinely appear in network events, can trigger this alert. a new business workflow with an organization in a country with which no workflows previously existed may trigger this alert - although the model will learn that the new destination country is no longer anomalous as the activity becomes ongoing. business travelers who roam to many countries for brief periods may trigger this alert.
business workflows that occur very occasionally, and involve an unusual surge in network traffic, can trigger this alert. a new business workflow or a surge in business activity may trigger this alert. a misconfigured network application or firewall may trigger this alert.
by default a container is not allowed to access any devices on the host, but a \"privileged\" container is given access to all devices on the host. this allows the container nearly all the same access as processes running on the host. an administrator may want to run a privileged container to use operating system administrative capabilities such as manipulating the network stack or accessing hardware devices from within the cluster. add exceptions for trusted container images using the query field \"kubernetes.audit.requestobject.spec.container.image\"
certain applications may install root certificates for the purpose of inspecting ssl traffic.
certain kinds of security testing may trigger this alert. powershell scripts that use high levels of obfuscation or have unusual script block payloads may trigger this alert.
certain programs or applications may modify files or change ownership in writable directories. these can be exempted by username.
certain tools may create hidden temporary files or directories upon installation or as part of their normal behavior. these events can be filtered by the process arguments, username, or process name values.
certain tools or automated software may enumerate hardware information. these tools can be exempted via user name or process arguments to eliminate potential noise.
certain utilities that delete files for disk cleanup or administrators manually removing backup files.
changes to the shell profile tend to be noisy, a tuning per your environment will be required.
changes to windows services or a rarely executed child process.
clusters or instances may be deleted by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. cluster or instance deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
command execution on a virtual machine may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. command execution from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
consider adding exceptions to this rule to filter false positives if okta mfa rules are regularly modified in your organization.
consider adding exceptions to this rule to filter false positives if okta policies are regularly modified in your organization.
consider adding exceptions to this rule to filter false positives if oyour organization's okta network zones are regularly modified.
consider adding exceptions to this rule to filter false positives if sign on policies for okta applications are regularly modified or deleted in your organization.
consider adding exceptions to this rule to filter false positives if the mfa factors for okta user accounts are regularly reset in your organization.
consider adding exceptions to this rule to filter false positives if your organization's okta applications are regularly modified and the behavior is expected.
controller service accounts aren't normally assigned to running pods, this is abnormal behavior with very few legitimate use-cases and should result in very few false positives.
custom applications may be allowed by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
custom google workspace admin roles may be created by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
custom organization-specific macos packages that use .pkg files to run curl could trigger this rule. if known behavior is causing false positives, it can be excluded from the rule.
custom role creations may be done by a system or network administrator. verify whether the user email, resource name, and/or hostname should be making changes in your environment. role creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
custom windows error reporting debugger or applications restarted by werfault after a crash.
deletion of a resource group may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. resource group deletions from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
deletion of diagnostic settings may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. diagnostic settings deletion from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
developers may have a legitimate use for nodeports. for frontend parts of an application you may want to expose a service onto an external ip address without using cloud specific loadbalancers. nodeport can be used to expose the service on each node's ip at a static port (the nodeport). you'll be able to contact the nodeport service from outside the cluster, by requesting <nodeip>:<nodeport>. nodeport unlike loadbalancers, allow the freedom to set up your own load balancing solution, configure environments that aren't fully supported by kubernetes, or even to expose one or more node's ips directly.
developers may leverage third-party applications for legitimate purposes in google workspace such as for administrative tasks.
developers performing browsers plugin or extension debugging.
directories /dev/shm and /run/shm are temporary file storage directories in linux. they are intended to appear as a mounted file system, but uses virtual memory instead of a persistent storage device and thus are used for mounting file systems in legitimate purposes.
disabling a dkim configuration may be done by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
disabling encryption may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. disabling encryption by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
disabling safe links may be done by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
dns domains that use large numbers of child domains, such as software or content distribution networks, can trigger this alert and such parent domains can be excluded.
domain administrators may use this command-line utility for legitimate information gathering purposes, but it is not common for environments with windows server 2012 and newer.
domain-wide delegation of authority may be granted to service accounts by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
downloading rar or powershell files from the internet may be expected for certain systems. this rule should be tailored to either exclude systems as sources or destinations in which this behavior is expected.
endpoint security installers, updaters and post installation verification scripts.
enumeration of files and directories may not be inherently malicious and noise may come from scripts, automation tools, or normal command line usage. it's important to baseline your environment to determine the amount of expected noise and exclude any known fp's from the rule.
environments that leverage dns responses over 60k bytes will result in false positives - if this traffic is predictable and expected, it should be filtered out. additionally, this detection rule could be triggered by an authorized vulnerability scan or compromise assessment.
event hub deletions may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. event hub deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
eventbridge rules could be deleted or disabled by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. eventbridge rules being deleted or disabled by unfamiliar users should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
events deletions may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. events deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
exclude dns servers from this rule as this is expected behavior. endpoints usually query local dns servers defined in their dhcp scopes, but this may be overridden if a user configures their endpoint to use a remote dns server. this is uncommon in managed enterprise networks because it could break intranet name resolution when split horizon dns is utilized. some consumer vpn services and browser plug-ins may send dns traffic to remote internet destinations. in that case, such devices or networks can be excluded from this rule when this is expected behavior.
exporting snapshots may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. snapshot exports from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
false positives can occur because the rules may be mapped to a few mitre att&ck tactics. use the attached timeline to determine which detections were triggered on the host.
false positives can occur with generic built-in accounts, such as administrator, admin, etc. if they are widespread used in your environment. as a best practice, they shouldn't be used in day-to-day tasks, as it prevents the ability to quickly identify and contact the account owner to find out if an alert is a planned activity, regular business activity, or an upcoming incident.
false-positives (fp) can appear if another remote terminal service is being used to connect to it's listener but typically ssh is used in these scenarios.
false-positives (fp) can appear if the pid file is legitimate and holding a process id as intended. to differentiate, if the pid file is an executable or larger than 10 bytes, it should be ruled suspicious.
false-positives (fp) should be at a minimum with this detection as pid files are meant to hold process ids, not inherently be executables that spawn processes.
file system or mount being deleted may be performed by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. file system mount deletion by unfamiliar users should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
files generated during installation will generate a lot of noise, so the rule should only be enabled after the fact.
firewall acl's may be deleted by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. web acl deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
firewall policy deletions may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. firewall policy deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
firewall rules may be created by system administrators. verify that the firewall configuration change was expected. exceptions can be added to this rule to filter expected behavior.
firewall rules may be deleted by system administrators. verify that the firewall configuration change was expected. exceptions can be added to this rule to filter expected behavior.
firewall rules may be modified by system administrators. verify that the firewall configuration change was expected. exceptions can be added to this rule to filter expected behavior.
for additional tuning, severity exceptions for google_workspace.alert.metadata.severity can be added.
ftp servers should be excluded from this rule as this is expected behavior. some business workflows may use ftp for data exchange. these workflows often have expected characteristics such as users, sources, and destinations. ftp activity involving an unusual source or destination may be more suspicious. ftp activity involving a production server that has no known associated ftp workflow or business requirement is often suspicious.
full network packet capture may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. full network packet capture from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
getsessiontoken may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. getsessiontoken from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
global administrator additions may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. global administrator additions from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
google workspace admin role assignments may be modified by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
google workspace admin roles may be deleted by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
google workspace admin roles may be modified by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
google workspace administrators may adjust change which organizational unit a user belongs to as a result of internal role adjustments.
google workspace administrators may renew a suspended user account if the user is expected to continue employment at the organization after temporary leave. suspended user accounts are typically used by administrators to remove access to the user while actions is taken to transfer important documents and roles to other users, prior to deleting the user account and removing the license.
google workspace users typically share drive resources with a shareable link where parameters are edited to indicate when it is viewable or editable by the intended recipient. it is uncommon for a user in an organization to manually copy a drive object from an external drive to their corporate drive. this may happen where users find a useful spreadsheet in a public drive, for example, and replicate it to their drive. it is uncommon for the copied object to execute a container-bound script either unless the user was intentionally aware, suggesting the object uses container-bound scripts to accomplish a legitimate task.
guest user invitations may be sent out by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. guest user invitations from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
host windows firewall planned system administration changes.
http traffic on a non standard port. verify that the destination ip address is not related to a domain controller.
iam users may occasionally share ec2 snapshots with another aws account belonging to the same organization. if known behavior is causing false positives, it can be exempted from the rule.
if cloud app security identifies, for example, a high rate of file uploads or file deletion activities it may represent an adverse encryption process.
if the behavior of creating okta api tokens is expected, consider adding exceptions to this rule to filter false positives.
if the behavior of deactivating mfa for okta user accounts is expected, consider adding exceptions to this rule to filter false positives.
if the behavior of deactivating okta policies is expected, consider adding exceptions to this rule to filter false positives.
if the behavior of revoking okta api tokens is expected, consider adding exceptions to this rule to filter false positives.
if the domains listed in this rule are used as part of an authorized workflow, this rule will be triggered by those events. validate that this is expected activity and tune the rule to fit your environment variables.
if you have front-facing proxies that provide authentication and tls, this rule would need to be tuned to eliminate the source ip address of your reverse-proxy.
install or update of a legitimate printing driver. verify the printer driver file metadata such as manufacturer and signature information.
iot (internet of things) devices and networks may use telnet and can be excluded if desired. some business work-flows may use telnet for administration of older devices. these often have a predictable behavior. telnet activity involving an unusual source or destination may be more suspicious. telnet activity involving a production server that has no known associated telnet work-flow or business requirement is often suspicious.
irc activity may be normal behavior for developers and engineers but is unusual for non-engineering end users. irc activity involving an unusual source or destination may be more suspicious. irc activity involving a production server is often suspicious. because these ports are in the ephemeral range, this rule may false under certain conditions, such as when a nat-ed web server replies to a client which has used a port in the range by coincidence. in this case, these servers can be excluded. some legacy applications may use these ports, but this is very uncommon and usually only appears in local traffic using private ips, which does not match this rule's conditions.
it's recommended that you rotate your access keys periodically to help keep your storage account secure. normal key rotation can be exempted from the rule. an abnormal time frame and/or a key rotation from unfamiliar users, hosts, or locations should be investigated.
it's strongly recommended that the root user is not used for everyday tasks, including the administrative ones. verify whether the ip address, location, and/or hostname should be logging in as root in your environment. unfamiliar root logins should be investigated immediately. if known behavior is causing false positives, it can be exempted from the rule.
key vault modifications may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. key vault modifications from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
known or internal account ids or automation
legit application crash with rare werfault commandline value
legitimate administrative activity
legitimate administrative activity related to shadow copies.
legitimate allowlisting of noisy accounts
legitimate exchange system administration activity.
legitimate files reported by the users
legitimate local user creations may be done by a system or network administrator. verify whether this is known behavior in your environment. local user creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
legitimate misunderstanding by users or overly strict policies
legitimate powershell scripts that make use of psreflect to access the win32 api
legitimate powershell scripts that make use of these functions.
legitimate powershell scripts which makes use of compression and encoding.
legitimate powershell scripts which makes use of encryption.
legitimate processes may be spawned from the microsoft exchange server unified messaging (um) service. if known processes are causing false positives, they can be exempted from the rule.
legitimate publicly shared files from google drive.
legitimate python scripting activity.
legitimate remote account administration.
legitimate scheduled jobs may be created during installation of new software.
legitimate scheduled tasks may be created during installation of new software.
legitimate scheduled tasks running third party software.
legitimate software or scripts using cron jobs for recurring tasks.
legitimate user shell modification activity.
legitimate users and processes, such as system administration tools, may utilize shell utilities inside a container resulting in false positives.
legitimate webproxy settings modification
legitimate windows defender configuration changes
logging bucket deletions may be done by a system or network administrator. verify whether the user email, resource name, and/or hostname should be making changes in your environment. logging bucket deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
logging sink deletions may be done by a system or network administrator. verify whether the user email, resource name, and/or hostname should be making changes in your environment. logging sink deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
logging sink modifications may be done by a system or network administrator. verify whether the user email, resource name, and/or hostname should be making changes in your environment. sink modifications from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
mfa policies may be modified by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
mfa settings may be modified by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
microsoft antimalware service executable installed on non default installation path.
microsoft windows installers leveraging rundll32 for installation.
mknod is a linux system program. some normal use of this program, at varying levels of frequency, may originate from scripts, automation tools, and frameworks. usage by web servers is more likely to be suspicious.
modifications in the msds-keycredentiallink attribute can be done legitimately by the azure ad connect synchronization account or the adfs service account. these accounts can be added as exceptions.
nated servers that process email traffic may false and should be excluded from this rule as this is expected behavior for them. consumer and personal devices may send email traffic to remote internet destinations. in this case, such devices or networks can be excluded from this rule if this is expected behavior.
netcat and openssl are common tools used for establishing network connections and creating encryption keys. while they are popular, capturing the stdout and stderr in a named pipe pointed to a shell is anomalous.
netcat is a dual-use tool that can be used for benign or malicious activity. netcat is included in some linux distributions so its presence is not necessarily suspicious. some normal use of this program, while uncommon, may originate from scripts, automation tools, and frameworks.
network acl's may be created by a network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. network acl creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
network acl's may be deleted by a network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. network acl deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
network monitoring or management products may have a web server component that runs shell commands as part of normal behavior.
network watcher deletions may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. network watcher deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
new model deployments.
new or unusual command and user geolocation activity can be due to manual troubleshooting or reconfiguration; changes in cloud automation scripts or workflows; adoption of new services; expansion into new regions; increased adoption of work from home policies; or users who travel frequently.
new or unusual user command activity can be due to manual troubleshooting or reconfiguration; changes in cloud automation scripts or workflows; adoption of new services; or changes in the way services are used.
normal use of hping is uncommon apart from security testing and research. use by non-security engineers is very uncommon.
normal use of iodine is uncommon apart from security testing and research. use by non-security engineers is very uncommon.
password policies may be modified by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
planned windows defender configuration changes.
pods may be deleted by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. pods deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
powershell and windows command shell are often observed as legit child processes of the jetbrains teamcity service and may require further tuning.
powershell remoting is a dual-use protocol that can be used for benign or malicious activity. it's important to baseline your environment to determine the amount of noise to expect from this tool.
powershell scripts that use this capability for troubleshooting.
privileged iam users with security responsibilities may be expected to make changes to the config service in order to align with local security policies and requirements. automation, orchestration, and security tools may also make changes to the config service, where they are used to automate setup or configuration of aws accounts. other kinds of user or service contexts do not commonly make changes to this service.
processes such as ms office using ieproxy to render html content.
psexec is a dual-use tool that can be used for benign or malicious activity. it's important to baseline your environment to determine the amount of noise to expect from this tool.
rare and unusual errors may indicate an impending service failure state. rare and unusual user error activity can also be due to manual troubleshooting or reconfiguration attempts by insufficiently privileged users, bugs in cloud automation scripts or workflows, or changes to iam privileges.
rdp connections may be made directly to internet destinations in order to access windows cloud server instances but such connections are usually made only by engineers. in such cases, only rdp gateways, bastions or jump servers may be expected internet destinations and can be exempted from this rule. rdp may be required by some work-flows such as remote access and support for specialized software products and servers. such work-flows are usually known and not unexpected. usage that is unfamiliar to server or network owners can be unexpected and suspicious.
restoring snapshots may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. snapshot restoration by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
role deletions may be done by a system or network administrator. verify whether the user email, resource name, and/or hostname should be making changes in your environment. role deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
route table could be modified or deleted by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. route table being modified from unfamiliar users should be investigated. if known behavior is causing false positives, it can be exempted from the rule. also automated processes that use terraform may lead to false positives.
route tables may be created by a system or network administrators. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. route table creation by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule. automated processes that use terraform may lead to false positives.
saml provider could be updated by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. saml provider updates by unfamiliar users should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
security audits may trigger this alert. conditions that generate bursts of failed logins, such as misconfigured applications or account lockouts could trigger this alert.
security audits, maintenance, and network administrative scripts may trigger this alert when run under web processes.
security scans and tests may result in these errors. misconfigured or buggy applications may produce large numbers of these errors. if the source is unexpected, the user unauthorized, or the request unusual, these may indicate suspicious or malicious activity.
security testing may produce events like this. activity of this kind performed by non-engineers and ordinary users is unusual.
security testing tools and frameworks may run `nmap` in the course of security auditing. some normal use of this command may originate from security engineers and network or server administrators. use of nmap by ordinary users is uncommon.
security testing tools and frameworks may run this command. some normal use of this command may originate from automation tools and frameworks.
security tools and device drivers may run these programs in order to enumerate kernel modules. use of these programs by ordinary users is uncommon. these can be exempted by process name or username.
security tools and device drivers may run these programs in order to load legitimate kernel modules. use of these programs by ordinary users is uncommon.
servers that process email traffic may cause false positives and should be excluded from this rule as this is expected behavior.
service account key deletions may be done by a system or network administrator. verify whether the user email, resource name, and/or hostname should be making changes in your environment. key deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
service account keys may be created by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
service accounts can be created by system administrators. verify that the behavior was expected. exceptions can be added to this rule to filter expected behavior.
service accounts may be deleted by system administrators. verify that the behavior was expected. exceptions can be added to this rule to filter expected behavior.
service accounts may be disabled by system administrators. verify that the behavior was expected. exceptions can be added to this rule to filter expected behavior.
service principal credential additions may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be making changes in your environment. credential additions from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
shared systems such as kiosks and conference room computers may be used by multiple users.
sign-ins using powershell may be done by a system or network administrator. verify whether the username, hostname, and/or resource name should be signing into your environment. sign-ins from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
socat is a dual-use tool that can be used for benign or malicious activity. some normal use of this program, at varying levels of frequency, may originate from scripts, automation tools, and frameworks. usage by web servers is more likely to be suspicious.
some container images require the addition of privileged capabilities. this rule leaves space for the exception of trusted container images. to add an exception, add the trusted container image name to the query field, kubernetes.audit.requestobject.spec.containers.image.
some network security policies allow rdp directly from the internet but usage that is unfamiliar to server or network owners can be unexpected and suspicious. rdp services may be exposed directly to the internet in some networks such as cloud environments. in such cases, only rdp gateways, bastions or jump servers may be expected expose rdp directly to the internet and can be exempted from this rule. rdp may be required by some work-flows such as remote access and support for specialized software products and servers. such work-flows are usually known and not unexpected.
some network security policies allow ssh directly from the internet but usage that is unfamiliar to server or network owners can be unexpected and suspicious. ssh services may be exposed directly to the internet in some networks such as cloud environments. in such cases, only ssh gateways, bastions or jump servers may be expected expose ssh directly to the internet and can be exempted from this rule. ssh may be required by some work-flows such as remote access and support for specialized software products and servers. such work-flows are usually known and not unexpected.
some networks may utilize pptp protocols but this is uncommon as more modern vpn technologies are available. usage that is unfamiliar to local network administrators can be unexpected and suspicious. torrenting applications may use this port. because this port is in the ephemeral range, this rule may false under certain conditions, such as when an application server replies to a client that used this port by coincidence. this is uncommon but such servers can be excluded.
some networks may utilize these protocols but usage that is unfamiliar to local network administrators can be unexpected and suspicious. because this port is in the ephemeral range, this rule may false under certain conditions, such as when an application server with a public ip address replies to a client which has used a udp port in the range by coincidence. this is uncommon but such servers can be excluded.
some normal applications and scripts may contain no user agent. most legitimate web requests from the internet contain a user agent string. requests from web browsers almost always contain a user agent string. if the source is unexpected, the user unauthorized, or the request unusual, these may indicate suspicious or malicious activity.
some normal use of this command may originate from security engineers and network or server administrators, but this is usually not routine or unannounced. use of `nping` by non-engineers or ordinary users is uncommon.
some normal use of this command may originate from server or network administrators engaged in network troubleshooting.
some normal use of this program, at varying levels of frequency, may originate from scripts, automation tools and frameworks. usage by non-engineers and ordinary users is unusual.
some organizations allow login with the root user without mfa, however, this is not considered best practice by aws and increases the risk of compromised credentials.
some proxied applications may use these ports but this usually occurs in local traffic using private ips which this rule does not match. proxies are widely used as a security technology but in enterprise environments this is usually local traffic which this rule does not match. if desired, internet proxy services using these ports can be added to allowlists. some screen recording applications may use these ports. proxy port activity involving an unusual source or destination may be more suspicious. some cloud environments may use this port when vpns or direct connects are not in use and cloud instances are accessed across the internet. because these ports are in the ephemeral range, this rule may false under certain conditions such as when a nated web server replies to a client which has used a port in the range by coincidence. in this case, such servers can be excluded if desired.
spikes in error message activity can also be due to bugs in cloud automation scripts or workflows; changes to cloud automation scripts or workflows; adoption of new services; changes in the way services are used; or changes to iam privileges.
ssh connections may be made directly to internet destinations in order to access linux cloud server instances but such connections are usually made only by engineers. in such cases, only ssh gateways, bastions or jump servers may be expected internet destinations and can be exempted from this rule. ssh may be required by some work-flows such as remote access and support for specialized software products and servers. such work-flows are usually known and not unexpected. usage that is unfamiliar to server or network owners can be unexpected and suspicious.
ssh over ports apart from the traditional port 22 is highly uncommon. this rule alerts the usage of the such uncommon ports by the ssh service. tuning is needed to have higher confidence. if this activity is expected and noisy in your environment, consider adding exceptions — preferably with a combination whitelisted ports for such legitimate ssh activities.
ssh usage may be legitimate depending on the environment. access patterns and follow-on activity should be analyzed to distinguish between authorized and potentially malicious behavior.
storage bucket configuration may be modified by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
storage bucket permissions may be modified by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
storage buckets may be deleted by a system or network administrator. verify whether the user email, resource name, and/or hostname should be making changes in your environment. bucket deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
strace is a dual-use tool that can be used for benign or malicious activity. some normal use of this command may originate from developers or sres engaged in debugging or system call tracing.
subscription creations may be done by a system or network administrator. verify whether the user email, resource name, and/or hostname should be making changes in your environment. subscription creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
subscription deletions may be done by a system or network administrator. verify whether the user email, resource name, and/or hostname should be making changes in your environment. subscription deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
suppression rules can be created legitimately by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. suppression rules created by unfamiliar users should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
suspending the recording of a trail may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. trail suspensions from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
teams external access may be enabled by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
teams guest access may be enabled by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
telnet can be used for both benign or malicious purposes. telnet is included by default in some linux distributions, so its presence is not inherently suspicious. the use of telnet to manage devices remotely has declined in recent years in favor of more secure protocols such as ssh. telnet usage by non-automated tools or frameworks may be suspicious.
testing updates to compliance policies.
the build engine is commonly used by windows developers but use by non-engineers is unusual. it is quite unusual for this program to be started by an office application like word or excel.
the guardduty detector may be deleted by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. detector deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
the html help executable program (hh.exe) runs whenever a user clicks a compiled help (.chm) file or menu item that opens the help file inside the help viewer. this is not always malicious, but adversaries may abuse this technology to conceal malicious code.
the number of okta user password reset or account unlock attempts will likely vary between organizations. to fit this rule to their organization, users can duplicate this rule and edit the schedule and threshold values in the new rule.
there is a potential for false positives if the container is used for legitimate tasks that require the use of netcat, such as network troubleshooting, testing or system monitoring. it is important to investigate any alerts generated by this rule to determine if they are indicative of malicious activity or part of legitimate container activity.
there is usually no reason to remove modules, but some buggy modules require it. these can be exempted by username. note that some linux distributions are not built to support the removal of modules at all.
these programs may be used by windows developers but use by non-engineers is unusual.
this is meant to run only on datasources using elastic agent 7.14+ since versions prior to that will be missing the necessary field, resulting in false positives.
this rule could generate false positives if the process arguments leveraged by the exploit are shared by custom scripts using the sudo or sudoedit binaries. only sudo versions 1.8.2 through 1.8.31p2 and 1.9.0 through 1.9.5p1 are affected; if those versions are not present on the endpoint, this could be a false positive.
this rule could identify benign domains that are formatted similarly to fin7's command and control algorithm. alerts should be investigated by an analyst to assess the validity of the individual observations.
this rule does not indicate that a sql injection attack occurred, only that the `sqlmap` tool was used. security scans and tests may result in these errors. if the source is not an authorized security tester, this is generally suspicious or malicious activity.
this rule is not looking for threat activity. disable the rule if you're already familiar with alerts.
this rule should be tailored to either exclude systems, as sources or destinations, in which this behavior is expected.
this rule should be tailored to exclude systems, either as sources or destinations, in which this behavior is expected.
this rule was tuned using the following baseline: https://raw.githubusercontent.com/microsoft/css-exchange/main/security/baselines/baseline_15.2.792.5.csv from microsoft. depending on version, consult https://github.com/microsoft/css-exchange/tree/main/security/baselines to help determine normalcy.
to tune this rule, add exceptions to exclude any event.code which should not trigger this rule.
to tune this rule, add exceptions to exclude any google_workspace.alert.type which should not trigger this rule.
topic creations may be done by a system or network administrator. verify whether the user email, resource name, and/or hostname should be making changes in your environment. topic creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
topic deletions may be done by a system or network administrator. verify whether the user email, resource name, and/or hostname should be making changes in your environment. topic deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
tor client activity is uncommon in managed enterprise networks but may be common in unmanaged or public networks where few security policies apply. because these ports are in the ephemeral range, this rule may false under certain conditions such as when a nated web server replies to a client which has used one of these ports by coincidence. in this case, such servers can be excluded if desired.
traffic mirroring may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. traffic mirroring from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
trail creations may be made by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. trail creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
trail deletions may be made by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. trail deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
trail updates may be made by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. trail updates from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
trusted applications for managing calendars and reminders.
trusted applications persisting via launchagent
trusted applications persisting via launchdaemons
trusted domains may be added by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
trusted finder sync plugins
trusted openssh executable updates. it's recommended to verify the integrity of openssh binary changes.
trusted solarwinds child processes. verify process details such as network connections and file writes.
trusted system module updates or allowed pluggable authentication module (pam) daemon configuration changes.
trusted system or adobe acrobat related processes.
unauthorized requests from service accounts are highly abnormal and more indicative of human behavior or a serious problem within the cluster. this behavior should be investigated further.
uncommon compiler activity can be due to an engineer running a local build on a production or staging instance in the course of troubleshooting or fixing a software issue.
uncommon sudo activity can be due to an engineer logging onto a server instance in order to perform manual troubleshooting or reconfiguration.
uncommon user activity can be due to an administrator or help desk technician logging onto a workstation or server in order to perform manual troubleshooting or reconfiguration.
uncommon user activity can be due to an engineer logging onto a server instance in order to perform manual troubleshooting or reconfiguration.
uncommon user command activity can be due to an engineer logging onto a server instance in order to perform manual troubleshooting or reconfiguration.
uncommon user privilege elevation activity can be due to an administrator, help desk technician, or a user performing manual troubleshooting or reconfiguration.
uncommon username activity can be due to an engineer logging onto a server instance in order to perform manual troubleshooting or reconfiguration.
uninstall or manual deletion of a legitimate printing driver files. verify the printer file metadata such as manufacturer and signature information.
unknown
updates to approved and trusted ssh executables can trigger this rule.
user accounts can be used as service accounts and have their password set never to expire. this is a bad security practice that exposes the account to credential access attacks. for cases in which user accounts cannot be avoided, microsoft provides the group managed service accounts (gmsa) feature, which ensures that the account password is robust and changed regularly and automatically.
user accounts that are rarely active, such as a site reliability engineer (sre) or developer logging into a production server for troubleshooting, may trigger this alert. under some conditions, a newly created user account may briefly trigger this alert while the model is learning.
user group access may be modified by an administrator to allow external access for community purposes. doing so for a user group whom has access to sensitive information or operational resources should be monitored closely.
user using a new mail client.
user using a vpn may lead to false positives.
users and administrators can create inbox rules for legitimate purposes. verify if it complies with the company policy and done with the user's consent. exceptions can be added to this rule to filter expected behavior.
users may share an endpoint related to work or personal use in which separate okta accounts are used.
users or system administrator cleaning out folders.
users running scripts in the course of technical support operations of software upgrades could trigger this alert. a newly installed program or one that runs rarely as part of a monthly or quarterly workflow could trigger this alert.
users working late, or logging in from unusual time zones while traveling, may trigger this rule.
valid clusters may be created by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. cluster creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
valid clusters or instances may be stopped by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. cluster or instance stoppages from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
verify whether the user identity, user agent, and/or hostname should be making changes in your environment. suspicious commands from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
verify whether the user identity, user agent, and/or hostname should be requesting changes in your environment. password reset attempts from unfamiliar users should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
verify whether the user identity, user agent, and/or hostname should be using getsecretstring api for the specified secretid. if known behavior is causing false positives, it can be exempted from the rule.
virtual network device modification or deletion may be performed by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. virtual network device modification or deletion by unfamiliar users should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
virtual private cloud networks may be deleted by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
virtual private cloud routes may be created by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
virtual private cloud routes may be deleted by system administrators. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.
vm exports may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. vm exports from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
vnc connections may be made directly to linux cloud server instances but such connections are usually made only by engineers. vnc is less common than ssh or rdp but may be required by some work flows such as remote access and support for specialized software products or servers. such work-flows are usually known and not unexpected. usage that is unfamiliar to server or network owners can be unexpected and suspicious.
vnc connections may be received directly to linux cloud server instances but such connections are usually made only by engineers. vnc is less common than ssh or rdp but may be required by some work-flows such as remote access and support for specialized software products or servers. such work-flows are usually known and not unexpected. usage that is unfamiliar to server or network owners can be unexpected and suspicious.
waf rules or rule groups may be deleted by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. rule deletions by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
web activity that is uncommon, like security scans, may trigger this alert and may need to be excluded. a new or rarely used program that calls web services may trigger this alert.
web activity that occurs rarely in small quantities can trigger this alert. possible examples are browsing technical support or vendor urls that are used very sparsely. a user who visits a new and unique web destination may trigger this alert when the activity is sparse. web applications that generate urls unique to a transaction may trigger this when they are used sparsely. web domains can be excluded in cases such as these.
werfault.exe will legitimately spawn when dns.exe crashes, but the dns service is very stable and so this is a low occurring event. denial of service (dos) attempts by intentionally crashing the service will also cause werfault.exe to spawn.
windows firewall can be disabled by a system administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. windows profile being disabled by unfamiliar users should be investigated. if known behavior is causing false positives, it can be exempted from the rule.
winrm is a dual-use protocol that can be used for benign or malicious activity. it's important to baseline your environment to determine the amount of noise to expect from this tool.