Service Installed By Unusual Client - System — Sigma Rule

Rule metadata and linked tags

Author: Tim Rauch (Nextron Systems), Elastic (idea). Source status: test; severity: high. Source dates: 2022-09-15 / 2023-01-04.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 3414eea61274acad1445e89c845883c68dd0d558a76ce8fe242de2cbe991c7c8

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 Installed By Unusual Client - System
id: 71c276aa-49cd-43d2-b920-2dcd3e6962d5
related:
    - id: c4e92a97-a9ff-4392-9d2d-7a4c642768ca
      type: similar
status: test
description: Detects a service installed by a client which has PID 0 or whose parent has PID 0
references:
    - https://www.elastic.co/guide/en/security/current/windows-service-installed-via-an-unusual-client.html
author: Tim Rauch (Nextron Systems), Elastic (idea)
date: 2022-09-15
modified: 2023-01-04
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.t1543
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: 'Service Control Manager'
        EventID: 7045
        ProcessId: 0
    condition: selection
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://www.elastic.co/guide/en/security/current/windows-service-installed-via-an-unusual-client.html