SigmaHQ Detections
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6,800 detections
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Detects the use of PowerShell with Uninstall-WindowsFeature or Remove-WindowsFeature cmdlets to disable or remove the Windows Defender GUI feature, a common technique used by adversaries to evade defenses.
Detects the usage of "reg.exe" to add Defender folder exclusions. Qbot has been seen using this technique to add exclusions for folders within AppData and ProgramData.
Detects the execution of "reg.exe" to alter registry keys that would replace the user's desktop background.
This is a common technique used by malware to change the desktop background to a ransom note or other image.
This is a common technique used by malware to change the desktop background to a ransom note or other image.
Detects commands that temporarily turn off Volume Snapshots
Detects the import of an alternate data stream with regini.exe, regini.exe can be used to modify registry keys.
Detects the execution of a renamed BOINC binary.
Detects potential suspicious behaviour using secedit.exe. Such as exporting or modifying the security policy
Detects one of the possible scenarios for disabling Symantec Endpoint Protection.
Symantec Endpoint Protection antivirus software services incorrectly implement the protected service mechanism.
As a result, the NT AUTHORITY/SYSTEM user can execute the taskkill /im command several times ccSvcHst.exe /f, thereby killing the process belonging to the service, and thus shutting down the service.
Symantec Endpoint Protection antivirus software services incorrectly implement the protected service mechanism.
As a result, the NT AUTHORITY/SYSTEM user can execute the taskkill /im command several times ccSvcHst.exe /f, thereby killing the process belonging to the service, and thus shutting down the service.
Detects any deletion of entries in ".*\shell\open\command" registry keys.
These registry keys might have been used for COM hijacking activities by a threat actor or an attacker and the deletion could indicate steps to remove its tracks.
These registry keys might have been used for COM hijacking activities by a threat actor or an attacker and the deletion could indicate steps to remove its tracks.
Detects modifications or creations of Windows Defender's default threat action settings based on severity to 'allow' or take 'no action'.
This is a highly suspicious configuration change that effectively disables Defender's ability to automatically mitigate threats of a certain severity level,
allowing malicious software to run unimpeded. An attacker might use this technique to bypass defenses before executing payloads.
This is a highly suspicious configuration change that effectively disables Defender's ability to automatically mitigate threats of a certain severity level,
allowing malicious software to run unimpeded. An attacker might use this technique to bypass defenses before executing payloads.
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