Service StartupType Change Via PowerShell Set-Service — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: medium. Source dates: 2023-03-04 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 1513d42e78c0da6567790a3d2d4dac4ad1204a21e2b2bc250a8311a72a1acd1e

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: Service StartupType Change Via PowerShell Set-Service
id: 62b20d44-1546-4e61-afce-8e175eb9473c
status: test
description: Detects the use of the PowerShell "Set-Service" cmdlet to change the startup type of a service to "disabled" or "manual"
references:
    - https://www.virustotal.com/gui/file/38283b775552da8981452941ea74191aa0d203edd3f61fb2dee7b0aea3514955
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-03-04
tags:
    - attack.execution
    - attack.defense-impairment
    - attack.t1685
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\powershell.exe'
        - OriginalFileName: 'PowerShell.EXE'
    selection_cli:
        CommandLine|contains|all:
            - 'Set-Service'
            - '-StartupType'
        CommandLine|contains:
            - 'Disabled'
            - 'Manual'
    condition: all of selection_*
falsepositives:
    - False positives may occur with troubleshooting scripts
level: medium

Original YAML and metadata in JSON

False positives

• False positives may occur with troubleshooting scripts

Source references

• https://www.virustotal.com/gui/file/38283b775552da8981452941ea74191aa0d203edd3f61fb2dee7b0aea3514955