LoFP LoFP / t1543

t1543

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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 newly installed program or one that runs rarely as part of a monthly or quarterly workflow could trigger this alert.
admin work like legit service installs.
administrative scripts
administrators may allow execution of specific binaries in non-standard paths. filter as needed.
administrators may create vbs or js script that use several tool as part of its execution. filter as needed.
administrators may create windows services on remote systems, but this activity is usually limited to a small set of hosts or users.
administrators may start windows services on remote systems, but this activity is usually limited to a small set of hosts or users.
authorized third party network logon providers.
false positives may be present based on common applications adding new drivers, however, filter as needed.
false positives may be present, filter as needed based on administrative activity.
false positives may occur if one of the vulnerable driver names mentioned above didn't change its name between versions. so always make sure that the driver being loaded is the legitimate one and the non vulnerable version.
false positives should be limited.
if you experience a lot of fp you could comment the driver name or its exact known legitimate location (when possible)
installation of a service
installation of legitimate service.
legitimate administration use
legitimate administrator or user creates a service for legitimate reasons.
legitimate applications may install services with uncommon services paths.
legitimate applications may trigger this behavior, filter as needed.
legitimate applications may use random windows service names.
legitimate reconfiguration of service.
legitimate use of process hacker or system informer by developers or system administrators
legitimate use of psservice by an administrator
legitimate use of the tool
limited false positives will be present. some applications do load drivers
note that false positives may occur, and filtering may be necessary, especially when it comes to remote service creation by administrators or software management utilities.
rare legitimate installation of kernel drivers via sc.exe
software installation
some legitimate applications may use plistbuddy to create or modify property lists and possibly generate false positives. review the property list being modified or created to confirm.
system informer is regularly used legitimately by system administrators or developers. apply additional filters accordingly
the rule doesn't look for anything suspicious so false positives are expected. if you use one of the tools mentioned, comment it out
there is a relevant set of false positives depending on applications in the environment
trusted applications persisting via launchagent
trusted applications persisting via launchdaemons
trusted finder sync plugins
trusted openssh executable updates. it's recommended to verify the integrity of openssh binary changes.
trusted system module updates or allowed pluggable authentication module (pam) daemon configuration changes.
unlikely
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.
using sc.exe to manipulate windows services is uncommon. however, there may be legitimate instances of this behavior. it is important to validate and investigate as appropriate.
while sometimes 'process hacker is used by legitimate administrators, the execution of process hacker must be investigated and allowed on a case by case basis