t1685 | LoFP

t1685

Title	Tags
a firewall policy can be added for legitimate purposes.	t1685 fortigate sigma
admin activity	t1033 t1059 t1059.004 t1070 t1136 t1136.001 t1485 t1505 t1505.003 t1546 t1546.001 t1685 t1685.001 t1685.005 t1686 linux windows sigma
admin may disable firewall during testing or fixing network problem.	t1685 endpoint splunk
admin may disable problematic schedule task	t1685 endpoint splunk
admin may disable this application for non technical user.	t1112 t1685 endpoint splunk
admin or user may choose to disable this windows features.	t1112 t1685 endpoint splunk
admin or user may choose to disable windows defender product	t1685 endpoint splunk
admin or user may choose to terminate browser via taskkill.exe. filter as needed.	t1685 endpoint splunk
admin or user may choose to use this windows features.	t1685 endpoint splunk
admin or user may choose to use this windows features. filter as needed.	t1685 endpoint splunk
administrative activity	t1003 t1016 t1021 t1021.001 t1027 t1036 t1053 t1053.005 t1059 t1059.001 t1059.005 t1071 t1071.001 t1087 t1087.001 t1087.002 t1098 t1105 t1133 t1134 t1136 t1136.001 t1137 t1222 t1222.001 t1505 t1505.004 t1552 t1552.006 t1555 t1555.004 t1572 t1615 t1685 linux windows sigma
administrator actions	t1685 windows sigma
administrator actions (should be investigated)	t1685 windows sigma
administrator actions via the windows defender interface	t1685 windows sigma
administrator activity (must be investigated)	t1685 windows sigma
administrator might leverage the same command line for debugging or other purposes. however this action must be always investigated	t1685 windows sigma
administrator might try to disable defender features during testing (must be investigated)	t1685 windows sigma
administrator or administrator scripts might leverage the flags mentioned in the detection section. either way, it should always be monitored	t1685 t1685.001 windows sigma
administrator or backup activity	t1685 t1685.001 windows sigma
administrator troubleshooting connectivity issues	t1556 t1556.004 t1685 cisco sigma
administrators may execute this command for testing or auditing.	t1047 t1082 t1119 t1685 endpoint splunk
administrators may intentionally disable or modify logging during maintenance, troubleshooting, or device reconfiguration. these events should be verified against approved change management activities.	t1685 network splunk
administrators may use this command when installing third party vibs. tune as needed.	t1685 infrastructure splunk
administrators or tools shutting down the services due to upgrade or removal purposes. if you experience some false positive, please consider adding filters to the parent process launching this command and not removing the entry	t1489 t1685 windows sigma
admins may modify logging levels during maintenance or troubleshooting to reduce log volume. verify against change management tickets. filter known admin accounts during maintenance windows.	t1685 network splunk
agent uninstallations during planned maintenance or legitimate it workflows may trigger these detections. review such events to avoid false positive alerts.	t1685 endpoint splunk
allowed administrative activities.	t1020 t1078 t1078.004 t1537 t1685 github sigma
an address could be added or deleted for legitimate purposes.	t1685 fortigate sigma
an administrator troubleshooting. investigate all attempts.	t1685 t1685.004 linux sigma
an unknown bug seems to trigger the windows \"svchost\" process to drop evtx files in the \"c:\windows\temp\" directory in the form \"<log_name\">_<uuid>.evtx\". see https://superuser.com/questions/1371229/low-disk-space-after-filling-up-c-windows-temp-with-evtx-and-txt-files	t1685 t1685.001 windows sigma
auto updates of windows defender causes restarts	t1685 windows sigma
automated deployment tools (e.g. terraform) managing guardduty state.	t1685 t1685.002 aws sigma
automated scripts in virtualized environments for device cleanup.	t1543 t1543.003 t1685 windows sigma
certain administrative tasks may require the modification of asr rules or threat actions due to fps being generated. investigate all attempts and filter as needed.	t1685 endpoint splunk
debugging or legitimate software testing	t1055 t1055.009 t1685 linux sigma
debugging scripts	t1685 t1685.006 linux sigma
dev, uat, sat environment. you should apply this rule with prod environment only.	t1685 aws sigma
event 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 from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.	t1685 azure sigma
exceptions can be added to this rule to filter expected behavior.	t1685 gcp sigma
false positives may be present based on organization use of applocker. filter as needed.	t1685 endpoint splunk
false positives may occur with troubleshooting scripts	t1685 windows sigma
false positives should be limited as the activity is not common to delete only the sd from the registry.	t1053.005 t1685 endpoint splunk
false positives should be limited, however filter as needed.	t1558.003 t1566.001 t1685 endpoint splunk
false positives will be limited to administrative scripts disabling hvci. filter as needed.	t1685 endpoint splunk
firewall rules being modified or deleted may be performed by a system administrator. verify that the firewall configuration change was expected.	t1685 gcp sigma
genuine activity	t1098 t1685 endpoint splunk
highly unlikely	t1112 t1685 t1685.001 windows sigma
if a user requires an anonymising proxy due to valid justifications.	t1685 okta sigma
imes are essential for languages that have more characters than can be represented on a standard keyboard, such as chinese, japanese, and korean.	t1685 windows sigma
installer tools that disable services, e.g. before log collection agent installation	t1685 t1685.005 windows sigma
intended exclusions by administrators	t1685 windows sigma
it is possible that this action is executed during troubleshooting activity. activity needs to be confirmed on a case by case basis.	t1685 endpoint splunk
it is unusual for processes other than outlook to modify this feature on a windows system since it is a default outlook functionality. although no false positives have been identified, use the provided filter macro to tune the search.	t1112 t1685 endpoint splunk
it is unusual to turn this feature off a windows system since it is a default security control, although it is not rare for some policies to disable it. although no false positives have been identified, use the provided filter macro to tune the search.	t1685 endpoint splunk
it is very unlikely for legitimate activities to disable the vulnerable driver blocklist via command line tools; thus it is recommended to investigate promptly.	t1685 windows sigma
legitimate activities	t1027 t1049 t1083 t1490 t1518 t1518.001 t1553 t1553.001 t1685 macos linux sigma
legitimate admin script	t1070 t1070.006 t1112 t1685 windows sigma
legitimate administration	t1685 windows sigma
legitimate administration activities	t1007 t1016 t1018 t1033 t1037 t1037.005 t1040 t1046 t1053 t1053.002 t1053.003 t1059 t1059.012 t1069 t1069.001 t1070 t1070.004 t1078 t1078.003 t1082 t1087 t1087.001 t1090 t1098 t1105 t1136 t1136.001 t1140 t1201 t1489 t1518 t1518.001 t1529 t1546 t1546.014 t1548 t1548.001 t1552 t1552.001 t1553 t1553.004 t1555 t1555.001 t1564 t1564.002 t1565 t1565.001 t1592 t1592.004 t1685 t1685.006 t1686 macos linux windows sigma
legitimate administration via scripts or tools (e.g., sccm, intune, gpo enforcement). correlate with administrative activity.	t1685 windows sigma
legitimate administrative activities	t1059 t1059.012 t1082 t1098 t1497 t1497.001 t1685 t1690 macos gcp linux sigma
legitimate administrative changes to service startup types using wmic, investigate accordingly.	t1047 t1685 windows sigma
legitimate administrative use	t1046 t1082 t1135 t1505 t1505.005 t1546 t1546.007 t1546.008 t1547 t1547.001 t1547.002 t1547.010 t1547.014 t1556 t1556.002 t1557 t1564 t1564.002 t1574 t1574.007 t1685 t1685.001 windows sigma
legitimate administrative use (should be investigated either way)	t1685 windows sigma
legitimate administrator activity	t1021 t1021.002 t1021.004 t1046 t1490 t1505 t1505.004 t1569 t1569.002 t1685 t1685.001 macos windows sigma
legitimate administrator activity restoring a file	t1685 windows sigma
legitimate administrators might use this command to remove sysmon for debugging purposes	t1685 windows sigma
legitimate administrators might use this command to update sysmon configuration.	t1685 windows sigma
legitimate administrators removing applications (should always be investigated)	t1685 windows sigma
legitimate adminstrative usage of this functionality will trigger this detection.	t1021.007 t1072 t1105 t1202 t1484 t1529 t1685 t1686 azure tenant splunk
legitimate changes to the 'risk-based step-up consent' setting by administrators, perhaps as part of a policy update or security assessment, may trigger this alert, necessitating verification of the change's intent and authorization.	t1685 o365 tenant splunk
legitimate configuration changes during routine maintenance or device setup may trigger this detection, especially when multiple related changes are made in a single session. network administrators often make several configuration changes in sequence during maintenance windows. to reduce false positives, consider implementing a baseline of expected administrative activities, including approved administrative usernames and scheduled maintenance windows. the detection includes a threshold (count > 2) to filter out isolated configuration changes, but this threshold may need to be adjusted based on your environment's normal activity patterns.	t1098 t1505.003 t1685 network splunk
legitimate creative writers developing fictional characters, game developers creating roleplay scenarios, educators teaching about ai ethics and limitations, researchers studying ai behavior, or users engaging in harmless creative storytelling may trigger false positives.	t1685 web proxy splunk
legitimate deactivation by administrative staff	t1685 t1685.005 windows sigma
legitimate deinstallation by administrative staff	t1685 windows sigma
legitimate detector deletion by an admin (e.g., during account decommissioning).	t1685 t1685.002 aws sigma
legitimate driver altitude change to hide sysmon	t1685 windows sigma
legitimate employees using personal devices during emergencies, new hires awaiting device provisioning, temporary workers with unmanaged equipment, or users accessing copilot from approved but temporarily non-compliant devices may trigger false positives.	t1685 web application splunk
legitimate powershell scripts	t1003 t1003.003 t1003.006 t1033 t1036 t1036.003 t1057 t1070 t1070.003 t1083 t1201 t1546 t1546.015 t1553 t1553.005 t1564 t1564.006 t1615 t1685 windows sigma
legitimate powershell scripts that disable windows defender for troubleshooting purposes. must be investigated.	t1685 windows sigma
legitimate programs and administrators will execute sc.exe with the start disabled flag. it is possible, but unlikely from the telemetry of normal windows operation we observed, that sc.exe will be called more than seven times in a short period of time.	t1685 endpoint splunk
legitimate researchers studying data classification systems, cybersecurity professionals testing information handling policies, compliance officers reviewing data access procedures, journalists researching transparency issues, or employees asking for comprehensive project documentation may trigger false positives.	t1685 web application splunk
legitimate script	t1018 t1021 t1021.006 t1048 t1059 t1218 t1218.007 t1685 windows sigma
legitimate snmp configuration changes may trigger this detection during routine network maintenance or initial device setup. network administrators often need to configure snmp for monitoring and management purposes. to reduce false positives, consider implementing a baseline of expected administrative activities, including approved administrative usernames, typical times for snmp configuration changes, and scheduled maintenance windows. you may also want to create a lookup table of approved snmp hosts and filter out alerts for these destinations.	t1040 t1552 t1685 network splunk
legitimate system administration tasks that require disabling hvci for troubleshooting purposes when certain drivers or applications are incompatible with it.	t1685 windows sigma
legitimate usage of werfaultsecure for debugging purposes	t1003 t1003.001 t1685 windows sigma
legitimate use	t1005 t1040 t1072 t1090 t1124 t1127 t1219 t1219.002 t1484 t1484.001 t1546 t1546.015 t1555 t1555.003 t1685 windows sigma
legitimate user activity.	t1021 t1021.004 t1082 t1098 t1213 t1213.003 t1591 t1591.004 t1685 bitbucket sigma
legitimate users discussing ai ethics research, security professionals testing system robustness, developers creating training materials for ai safety, or academic discussions about ai limitations and behavioral constraints may trigger false positives.	t1685 web application splunk
legitimate vmware administration, tools installation/uninstallation, or troubleshooting driver conflicts.	t1543 t1543.003 t1685 windows sigma
legitimate windows error reporting operations	t1685 windows sigma
limited false positives in most environments, however tune as needed.	t1059 t1070 t1110 t1499 t1529 T1601.001 T1673 t1685 t1686 t1690 infrastructure splunk
limited false positives. however, tune based on scripts that may perform this action.	t1685 endpoint splunk
log rotation.	t1685 t1685.006 linux sigma
maintenance activity	t1685 t1685.001 t1685.005 windows sigma
maintenance.	t1685 t1685.006 linux sigma
may be part of a system customization or \"debloating\" script, but this is highly unusual in a managed corporate environment.	t1685 windows sigma
minimal, for some older versions of dev tools, such as pycharm, developers were known to sometimes disable windows defender to improve performance, but this generally is not considered a good security practice.	t1685 windows sigma
msmpeng might crash if the \"c:\\" partition is full	t1211 t1685 windows sigma
network admin can terminate a process using this linux command. filter is needed.	t1685 endpoint splunk
network administrator can use this application to kill process during audit or investigation.	t1685 endpoint splunk
network operator may disable this feature of windows but not so common.	t1685 endpoint splunk
no false positives have been identified at this time.	t1003 t1003.001 t1003.003 t1003.005 t1005 t1012 t1016 t1021 t1021.001 t1027 T1027.011 t1036 t1036.003 t1036.004 T1036.008 t1037.001 t1041 t1046 t1048 t1048.003 t1053 t1053.005 T1053.007 t1055 t1055.001 T1055.002 t1055.003 T1055.004 t1055.012 T1055.013 t1059 t1059.001 t1059.002 t1059.003 t1059.004 t1059.005 t1059.007 t1068 t1069.001 t1069.002 t1070 t1070.004 T1070.008 t1071 t1071.004 t1074 t1078 t1082 t1087 t1087.001 t1087.002 t1087.004 t1090.001 t1090.003 t1098 t1098.003 t1105 t1110 T1110.003 t1112 t1113 t1114.001 t1124 t1127 t1129 t1134 t1134.004 t1134.005 t1185 t1190 t1195 t1200 t1202 t1203 t1204 t1204.002 T1204.003 t1207 t1212 t1218 t1218.005 t1218.007 t1218.010 t1218.011 t1220 t1222 t1222.001 t1482 t1484 t1484.001 t1485 t1486 t1489 t1490 t1497 T1497.003 t1498 t1505 t1526 t1529 t1531 t1543 t1546 t1546.001 t1546.002 t1546.011 t1547.003 t1547.005 T1547.012 t1548 t1548.002 t1552.002 t1552.004 t1552.006 t1552.007 t1553.005 t1554 t1555.003 t1555.005 t1556 T1557.002 t1558 T1558.004 t1560 t1560.001 t1564.001 t1564.004 t1566 t1566.001 t1566.002 t1574.001 T1574.009 T1590.005 t1595 t1620 t1649 t1685 t1685.002 t1686 identity windows amazon elastic container registry circleci azure tenant aws instance aws account github o365 tenant kubernetes infrastructure endpoint network splunk
no false positives have been identified at this time. should be identified and understood.	t1222.001 t1685 endpoint splunk
other antivirus software installations could cause windows to disable that eventlog (unknown)	t1685 windows sigma
other cmdlets that may use the same parameters	t1685 windows sigma
other dlls with the same imphash	t1685 t1685.001 windows sigma
other legimate tools loading drivers. including but not limited to, sysinternals, cpu-z, avs etc. a baseline needs to be created according to the used products and allowed tools. a good thing to do is to try and exclude users who are allowed to load drivers.	t1685 windows sigma
other legimate tools using this driver and filename (like sysinternals). note - clever attackers may easily bypass this detection by just renaming the driver filename. therefore just medium-level and don't rely on it.	t1685 windows sigma
other legimate tools using this service names and drivers. note - clever attackers may easily bypass this detection by just renaming the services. therefore just medium-level and don't rely on it.	t1685 windows sigma
other legitimate windows processes not currently listed	t1486 t1685 windows sigma
planned maintenance, network outages, routing changes, or benign configuration updates may reduce log volume temporarily. validate against change management records and corroborate with device health metrics.	t1685 network splunk
possible admin activity	t1685 windows sigma
possible administrative activity	t1685 windows sigma
possibly during software installation or update processes	t1003 t1003.001 t1685 windows sigma
potential for some third party applications to disable amsi upon invocation. filter as needed.	t1059.001 t1685 endpoint splunk
processes related to software installation	t1486 t1685 windows sigma
rare falsepositives may occur from legitimate administrators disabling specific event log for troubleshooting	t1685 t1685.001 windows sigma
rare legitimate add to registry via cli (to these locations)	t1112 t1685 windows sigma
rare legitimate use by administrators to test software (should always be investigated)	t1685 windows sigma
rare need to clear logs before doing something. sometimes used by installers or cleaner scripts. the script should be investigated to determine if it's legitimate	t1685 t1685.005 windows sigma
rollout of log collection agents (the setup routine often includes a reset of the local eventlog)	t1685 t1685.005 windows sigma
scripts and administrative tools used in the monitored environment	t1003 t1027 t1033 t1070 t1134 t1485 t1685 t1685.001 t1685.005 windows sigma
seen being triggered occasionally during windows 8 defender updates	t1685 windows sigma
services or tools that set the values to more restrictive values	t1112 t1685 windows sigma
setting the \"complus_etwenabled\" value as a global environment variable either in user or machine scope should only happens during debugging use cases, hence the false positives rate should be very minimal.	t1685 endpoint splunk
software installations that legitimately modify defender settings (less common for these specific keys).	t1685 windows sigma
some crashes can occur sometimes and the event doesn't provide enough information to tune out these cases. manual exception is required	t1685 windows sigma
some false positives are to be expected. apply additional filters as needed before pushing to production.	t1222 t1222.002 t1489 t1685 linux sigma
some fp may occur when the feature is disabled by the av itself, you should always investigate if the action was legitimate	t1685 windows sigma
some legitimate administrative tasks or security configurations may create filtering platform policies. verify actions with authorized it personnel before alerting.	t1685 endpoint splunk
some legitimate administrative tools leverage `dism.exe` to manipulate packages and features of the operating system. filter as needed.	t1685 endpoint splunk
some legitimate administrative tools or security workflows may use similar techniques to block or filter edr traffic for maintenance or troubleshooting. verify the context and authorized use before flagging.	t1685 endpoint splunk
system administrator manually stopping kaspersky services	t1685 linux sigma
system administrators or scripts that intentionally clear logs	t1685 t1685.006 linux sigma
system or network administrator behaviors	t1685 aws sigma
system provisioning (system reset before the golden image creation)	t1685 t1685.005 windows sigma
temporary disablement for troubleshooting (verify via change management tickets).	t1685 t1685.002 aws sigma
the old auditpol utility isn't available by default on recent versions of windows as it was replaced by a newer version. the fp rate should be very low except for tools that use a similar flag structure	t1685 t1685.001 windows sigma
third party antivirus	t1685 windows sigma
third party application may use this approach to uninstall applications.	t1685 endpoint splunk
unknown	t1003 t1003.001 t1003.002 t1003.003 t1003.004 t1003.006 t1005 t1008 t1010 t1012 t1018 t1020 t1021 t1021.001 t1021.002 t1021.003 t1021.005 t1021.006 t1027 t1027.001 t1027.003 t1027.004 t1027.005 t1027.009 t1027.010 t1033 t1036 t1036.003 t1036.005 t1036.007 t1040 t1046 t1047 t1048 t1048.003 t1049 t1053 t1053.002 t1053.005 t1055 t1055.001 t1055.003 t1055.009 t1055.011 t1055.012 t1056 t1056.001 t1057 t1059 t1059.001 t1059.002 t1059.003 t1059.004 t1059.005 t1059.006 t1059.007 t1068 t1069 t1069.001 t1069.002 t1069.003 t1070 t1070.003 t1070.004 t1070.005 t1070.006 t1071 t1071.001 t1071.004 t1072 t1074 t1074.001 t1078 t1078.001 t1078.002 t1078.003 t1078.004 t1082 t1083 t1087 t1087.001 t1087.002 t1087.004 t1090 t1090.001 t1090.003 t1095 t1098 t1102 t1102.001 t1102.003 t1105 t1106 t1110 t1110.001 t1112 t1113 t1114 t1114.001 t1115 t1119 t1123 t1127 t1127.001 t1133 t1134 t1134.001 t1134.002 t1134.003 t1135 t1136 t1136.001 t1136.002 t1137 t1137.002 t1137.006 t1140 t1176 t1176.001 t1185 t1187 t1190 t1195 t1195.001 t1197 t1199 t1200 t1201 t1202 t1203 t1204 t1204.001 t1204.002 t1204.004 t1207 t1210 t1211 t1212 t1216 t1216.001 t1217 t1218 t1218.001 t1218.002 t1218.003 t1218.005 t1218.007 t1218.009 t1218.010 t1218.011 t1218.013 t1219 t1219.002 t1220 t1222 t1222.001 t1482 t1484 t1485 t1486 t1489 t1490 t1491 t1491.001 t1497 t1497.001 t1498 t1499 t1499.004 t1505 t1505.003 t1505.004 t1518 t1518.001 t1526 t1528 t1529 t1531 t1537 t1539 t1543 t1543.001 t1543.003 t1543.004 t1546 t1546.001 t1546.002 t1546.003 t1546.007 t1546.008 t1546.009 t1546.010 t1546.011 t1546.012 t1546.015 t1547 t1547.001 t1547.003 t1547.004 t1547.005 t1547.006 t1547.008 t1547.009 t1547.010 t1548 t1548.002 t1552 t1552.001 t1552.002 t1552.004 t1552.006 t1553 t1553.004 t1554 t1555 t1555.003 t1555.004 t1555.005 t1556 t1556.002 t1557 t1557.001 t1557.003 t1558 t1558.003 t1559 t1559.001 t1559.002 t1560 t1560.001 t1563 t1563.002 t1564 t1564.001 t1564.002 t1564.003 t1564.004 t1565 t1566 t1566.001 t1566.002 t1567 t1567.002 t1569 t1569.002 t1571 t1572 t1573 t1574 t1574.001 t1574.005 t1574.006 t1574.008 t1574.011 t1584 t1587 t1587.001 t1588 t1588.001 t1588.002 t1593 t1593.003 t1595 t1608 t1609 t1611 t1614 t1614.001 t1615 t1621 t1649 t1685 t1685.001 t1686 t1686.003 kubernetes rpc_firewall macos gcp azure m365 aws linux windows cisco zeek okta onelogin sigma
unlikely	t1003 t1003.001 t1003.002 t1003.003 t1003.004 t1003.005 t1003.006 t1005 t1007 t1008 t1012 t1014 t1016 t1018 t1021 t1021.001 t1021.002 t1021.003 t1021.006 t1027 t1027.005 t1027.010 t1033 t1036 t1036.003 t1036.005 t1036.007 t1041 t1046 t1047 t1048 t1048.001 t1053 t1053.003 t1053.005 t1055 t1055.001 t1055.012 t1056 t1057 t1059 t1059.001 t1059.002 t1059.003 t1068 t1070 t1071 t1071.001 t1071.004 t1078 t1078.004 t1082 t1083 t1087 t1090 t1090.001 t1090.003 t1105 t1106 t1112 t1115 t1123 t1127 t1132 t1132.001 t1133 t1134 t1134.001 t1134.002 t1134.004 t1136 t1136.001 t1136.002 t1137 t1137.002 t1140 t1190 t1195 t1195.002 t1202 t1203 t1204 t1204.001 t1204.004 t1213 t1213.003 t1216 t1218 t1218.001 t1218.008 t1218.010 t1218.011 t1218.013 t1219 t1219.002 t1486 t1489 t1490 t1496 t1498 t1499 t1499.001 t1505 t1505.003 t1526 t1528 t1543 t1543.003 t1546 t1546.008 t1546.015 t1548 t1548.002 t1550 t1550.003 t1552 t1552.004 t1553 t1553.004 t1555 t1556 t1556.006 t1557 t1557.001 t1558 t1558.003 t1564 t1564.004 t1566 t1566.001 t1566.002 t1569 t1569.002 t1570 t1574 t1574.001 t1574.007 t1586 t1587 t1587.001 t1588 t1588.002 t1590 t1590.001 t1590.002 t1620 t1649 t1653 t1685 t1685.001 t1689 opencanary bitbucket macos azure m365 aws linux windows okta sigma
unlikely and should be investigated immediately.	t1685 windows sigma
user may choose to disable windows defender av	t1685 endpoint splunk
valid change in a trail	t1685 t1685.002 aws sigma
valid change in aws config service	t1685 t1685.002 aws sigma
valid change in the guardduty (e.g. to ignore internal scanners)	t1685 aws sigma
windows service update may cause this event. in that scenario, filtering is needed.	t1685 endpoint splunk