Suspicious Execution of Shutdown to Log Out — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: medium. Source dates: 2022-10-01 / not supplied.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: a8c3569caf24b8aa922ed4741ff333ae6a6fcd705ce41c5d3f5a84914f05e477

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: Suspicious Execution of Shutdown to Log Out
id: ec290c06-9b6b-4338-8b6b-095c0f284f10
status: test
description: Detects the rare use of the command line tool shutdown to logoff a user
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/9e5b12c4912c07562aec7500447b11fa3e17e254/atomics/T1529/T1529.md
    - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/shutdown
author: frack113
date: 2022-10-01
tags:
    - attack.impact
    - attack.t1529
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\shutdown.exe'
        CommandLine|contains: '/l'
    condition: selection
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/9e5b12c4912c07562aec7500447b11fa3e17e254/atomics/T1529/T1529.md
• https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/shutdown