Disable Tamper Protection on Windows Defender

Description

Detects disabling Windows Defender Tamper Protection

Query · sigma

selection:
  TargetObject|contains: \Microsoft\Windows Defender\Features\TamperProtection
  Details: DWORD (0x00000000)
filter_msmpeng_client:
  Image|startswith: C:\ProgramData\Microsoft\Windows Defender\Platform\
  Image|endswith: \MsMpEng.exe
filter_msmpeng_domain_controller:
  Image: C:\Program Files\Windows Defender\MsMpEng.exe
condition: selection and not 1 of filter_*

Known false positives

  • Unknown
Raw source Disable Tamper Protection on Windows Defender · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Disable Tamper Protection on Windows Defender
id: 93d298a1-d28f-47f1-a468-d971e7796679
status: test
description: Detects disabling Windows Defender Tamper Protection
references:
    - https://www.tenforums.com/tutorials/123792-turn-off-tamper-protection-microsoft-defender-antivirus.html
author: Austin Songer @austinsonger
date: 2021-08-04
modified: 2023-08-17
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains: '\Microsoft\Windows Defender\Features\TamperProtection'
        Details: DWORD (0x00000000)
    filter_msmpeng_client: # only disabled temporarily during updates
        Image|startswith: 'C:\ProgramData\Microsoft\Windows Defender\Platform\'
        Image|endswith: '\MsMpEng.exe'
    filter_msmpeng_domain_controller: # only disabled temporarily during updates
        Image: 'C:\Program Files\Windows Defender\MsMpEng.exe'
    condition: selection and not 1 of filter_*
falsepositives:
    - Unknown
level: medium

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