Windows Defender Real-time Protection Disabled — Sigma Rule

Rule metadata and linked tags

Author: Ján Trenčanský, frack113. Source status: stable; severity: high. Source dates: 2020-07-28 / 2023-11-22.

{
  "product": "windows",
  "service": "windefend"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: eb1532c429c5ed2074407c2bef2e758308143046fe36d4af8fbd6e3f8c96d5e7

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Windows Defender Real-time Protection Disabled
id: b28e58e4-2a72-4fae-bdee-0fbe904db642
related:
    - id: fe34868f-6e0e-4882-81f6-c43aa8f15b62
      type: obsolete
status: stable
description: |
    Detects disabling of Windows Defender Real-time Protection. As this event doesn't contain a lot of information on who initiated this action you might want to reduce it to a "medium" level if this occurs too many times in your environment
references:
    - https://learn.microsoft.com/en-us/defender-endpoint/troubleshoot-microsoft-defender-antivirus?view=o365-worldwide#event-id-5001
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md
    - https://craigclouditpro.wordpress.com/2020/03/04/hunting-malicious-windows-defender-activity/
author: Ján Trenčanský, frack113
date: 2020-07-28
modified: 2023-11-22
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    product: windows
    service: windefend
detection:
    selection:
        EventID: 5001 # Real-time protection is disabled.
    condition: selection
falsepositives:
    - Administrator actions (should be investigated)
    - Seen being triggered occasionally during Windows 8 Defender Updates
level: high

Original YAML and metadata in JSON

False positives

• Administrator actions (should be investigated)
• Seen being triggered occasionally during Windows 8 Defender Updates

Source references

• https://learn.microsoft.com/en-us/defender-endpoint/troubleshoot-microsoft-defender-antivirus?view=o365-worldwide#event-id-5001
• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md
• https://craigclouditpro.wordpress.com/2020/03/04/hunting-malicious-windows-defender-activity/