Win Defender Restored Quarantine File — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: high. Source dates: 2022-12-06 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: a031fe40e7f8755878f066a695ebc2ffcb58f0c6f231a096accdd2d738b8931c

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: Win Defender Restored Quarantine File
id: bc92ca75-cd42-4d61-9a37-9d5aa259c88b
status: test
description: Detects the restoration of files from the defender quarantine
references:
    - https://learn.microsoft.com/en-us/defender-endpoint/troubleshoot-microsoft-defender-antivirus?view=o365-worldwide
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-12-06
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    product: windows
    service: windefend
detection:
    selection:
        EventID: 1009 # The antimalware platform restored an item from quarantine.
    condition: selection
falsepositives:
    - Legitimate administrator activity restoring a file
level: high

Original YAML and metadata in JSON

False positives

• Legitimate administrator activity restoring a file

Source references

• https://learn.microsoft.com/en-us/defender-endpoint/troubleshoot-microsoft-defender-antivirus?view=o365-worldwide