Powershell Disable Security Monitoring
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About the rule
Rule Type
Standard
Rule Description
Detects modification in registry to disable the Windows Defender real time behavior monitoring
Severity
Critical
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (COMMANDLINE contains "set-mppreference" AND (COMMANDLINE contains "disablerealtimemonitoring" OR COMMANDLINE contains "disableioavprotection" OR COMMANDLINE contains "disableintrusionpreventionsystem" OR COMMANDLINE contains "disablescriptscanning" OR COMMANDLINE contains "disableblockatfirstseen" OR COMMANDLINE contains "DisableBehaviorMonitoring" OR COMMANDLINE contains "drtm" OR COMMANDLINE contains "dioavp" OR COMMANDLINE contains "dscrptsc" OR COMMANDLINE contains "dbaf" OR COMMANDLINE contains "dbm") AND (PROCESSNAME endswith "pwsh.exe" OR PROCESSNAME endswith "sqlps.exe" OR PROCESSNAME endswith "sqltoolsps.exe" OR PROCESSNAME endswith "powershell.exe" OR PROCESSNAME endswith "powershell_ise.exe")) select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
