Suspicious Uninstall of Windows Defender Feature via PowerShell
Last updated on:
In this page
About the rule
Rule Type
Standard
Rule Description
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.
Severity
Attention
Rule Requirement
Criteria
Action1:
actionname = "Process started" AND (( PROCESSNAME endswith "\powershell_ise.exe,\powershell.exe,\pwsh.exe" OR ORIGINALFILENAME = "PowerShell_ISE.EXE,PowerShell.EXE,pwsh.dll" ) AND COMMANDLINE contains "Uninstall-WindowsFeature,Remove-WindowsFeature,Disable-WindowsOptionalFeature,Remove-WindowsCapability" AND COMMANDLINE contains "Windows-Defender,Windows Defender,Microsoft-Windows-Defender" )
select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME,Action1.DOMAIN,Action1.ORIGINALFILENAME,Action1.PARENTPROCESSID,Action1.PROCESSID,Action1.PRODUCT_NAME,Action1.SECURITYID
Detection
Execution Mode
realtime
Log Sources
Windows
Author
@yxinmiracle
