Security Service Disabled Via Reg.EXE

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About the rule

Rule Type

Standard

Rule Description

Detects execution of "reg.exe" to disable security services such as Windows Defender.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (COMMANDLINE contains "reg" AND COMMANDLINE contains "add") AND ((COMMANDLINE contains "d 4" AND COMMANDLINE contains "v Start") AND COMMANDLINE contains "\AppIDSvc,\MsMpSvc,\NisSrv,\SecurityHealthService,\Sense,\UsoSvc,\WdBoot,\WdFilter,\WdNisDrv,\WdNisSvc,\WinDefend,\wscsvc,\wuauserv") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Florian Roth (Nextron Systems), John Lambert (idea), elhoim