Suspicious Service Installation — Sigma Rule

Rule metadata and linked tags

Author: pH-T (Nextron Systems), Florian Roth (Nextron Systems). Source status: test; severity: high. Source dates: 2022-03-18 / 2023-12-04.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: c4b04eaee895b9ff9f4eac96ecdec9782ac88f06967a1a7cf8da86c97ab09313

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 Service Installation
id: 1d61f71d-59d2-479e-9562-4ff5f4ead16b
related:
    - id: ca83e9f3-657a-45d0-88d6-c1ac280caf53
      type: obsolete
    - id: 26481afe-db26-4228-b264-25a29fe6efc7
      type: similar
status: test
description: Detects suspicious service installation commands
references:
    - Internal Research
author: pH-T (Nextron Systems), Florian Roth (Nextron Systems)
date: 2022-03-18
modified: 2023-12-04
tags:
    - attack.persistence
    - attack.privilege-escalation
    - car.2013-09-005
    - attack.t1543.003
logsource:
    product: windows
    service: system
detection:
    selection:
        Provider_Name: 'Service Control Manager'
        EventID: 7045
        ImagePath|contains:
            - ' -nop '
            - ' -sta '
            - ' -w hidden '
            - ':\Temp\'
            - '.downloadfile(' # PowerShell download command
            - '.downloadstring(' # PowerShell download command
            - '\ADMIN$\'
            - '\Perflogs\'
            - '&&'
    condition: selection
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• Internal Research (source note; no public URL supplied)