Windows Defender Exclusions Added — Sigma Rule

Rule metadata and linked tags

Author: Christian Burkard (Nextron Systems). Source status: stable; severity: medium. Source dates: 2021-07-06 / 2022-12-06.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 348435386369d1e7520db4ce0f7bc7fa3390c5c6a1f4e4247affb53091608dde

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 Exclusions Added
id: 1321dc4e-a1fe-481d-a016-52c45f0c8b4f
status: stable
description: Detects the Setting of Windows Defender Exclusions
references:
    - https://twitter.com/_nullbind/status/1204923340810543109
author: Christian Burkard (Nextron Systems)
date: 2021-07-06
modified: 2022-12-06
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    product: windows
    service: windefend
detection:
    selection:
        EventID: 5007 # The antimalware platform configuration changed.
        NewValue|contains: '\Microsoft\Windows Defender\Exclusions'
    condition: selection
falsepositives:
    - Administrator actions
level: medium

Original YAML and metadata in JSON

False positives

• Administrator actions

Source references

• https://twitter.com/_nullbind/status/1204923340810543109