Windows Defender Service Disabled - Registry


Description

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

Query · sigma

selection:
  TargetObject|endswith: \Services\WinDefend\Start
  Details: DWORD (0x00000004)
condition: selection

Known false positives

  • Administrator actions
Raw source Windows Defender Service Disabled - Registry · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified.
title: Windows Defender Service Disabled - Registry
id: e1aa95de-610a-427d-b9e7-9b46cfafbe6a
status: test
description: Detects when an attacker or tool disables the  Windows Defender service (WinDefend) via the registry
references:
    - https://thedfirreport.com/2021/10/18/icedid-to-xinglocker-ransomware-in-24-hours/
    - https://gist.github.com/anadr/7465a9fde63d41341136949f14c21105
author: Ján Trenčanský, frack113, AlertIQ, Nasreddine Bencherchali
date: 2022-08-01
modified: 2024-03-25
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    product: windows
    category: registry_set
detection:
    selection:
        TargetObject|endswith: '\Services\WinDefend\Start'
        Details: 'DWORD (0x00000004)'
    condition: selection
falsepositives:
    - Administrator actions
level: high

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