WMIC Unquoted Services Path Lookup - PowerShell — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: medium. Source dates: 2022-06-20 / 2022-11-25.

{
  "product": "windows",
  "category": "ps_script",
  "definition": "Requirements: Script Block Logging must be enabled"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 0097243a98d161941e2f38c7ece8f4ed4ae9f50649d8d7962970c4bafed7d41b

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: WMIC Unquoted Services Path Lookup - PowerShell
id: 09658312-bc27-4a3b-91c5-e49ab9046d1b
related:
    - id: 68bcd73b-37ef-49cb-95fc-edc809730be6
      type: similar
status: test
description: Detects known WMI recon method to look for unquoted service paths, often used by pentest inside of powershell scripts attackers enum scripts
references:
    - https://github.com/nccgroup/redsnarf/blob/35949b30106ae543dc6f2bc3f1be10c6d9a8d40e/redsnarf.py
    - https://github.com/S3cur3Th1sSh1t/Creds/blob/eac23d67f7f90c7fc8e3130587d86158c22aa398/PowershellScripts/jaws-enum.ps1
    - https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-06-20
modified: 2022-11-25
tags:
    - attack.execution
    - attack.t1047
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains:
            - 'Get-WmiObject '
            - 'gwmi '
        ScriptBlockText|contains|all:
            - ' Win32_Service '
            - 'Name'
            - 'DisplayName'
            - 'PathName'
            - 'StartMode'
    condition: selection
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/nccgroup/redsnarf/blob/35949b30106ae543dc6f2bc3f1be10c6d9a8d40e/redsnarf.py
• https://github.com/S3cur3Th1sSh1t/Creds/blob/eac23d67f7f90c7fc8e3130587d86158c22aa398/PowershellScripts/jaws-enum.ps1
• https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/