Windows Defender Service Disabled - Registry

Last updated on:

About the rule

Rule Type

Standard

Rule Description

Detects when an attacker or tool disables the Windows Defender service (WinDefend) via the registry

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Registry value modified" AND (OBJECTNAME endswith "\Services\WinDefend\Start" OR (OBJECTNAME endswith "\Services\WinDefend" AND OBJECTVALUENAME = "Start")) AND (INFORMATION = "DWORD (0x00000004)" OR (CHANGES = 4 AND NEWTYPE = "REG_DWORD")) select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Ján Trenčanský, frack113, AlertIQ, Nasreddine Bencherchali