Interesting Service Enumeration Via Sc.EXE — Sigma Rule

Rule metadata and linked tags

Author: Swachchhanda Shrawan Poudel. Source status: test; severity: low. Source dates: 2024-02-12 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 08d2d595d16d79b613e8d917950c381bad869d45e36119231e120f0659513ccb

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: Interesting Service Enumeration Via Sc.EXE
id: e83e8899-c9b2-483b-b355-5decc942b959
status: test
description: |
    Detects the enumeration and query of interesting and in some cases sensitive services on the system via "sc.exe".
    Attackers often try to enumerate the services currently running on a system in order to find different attack vectors.
references:
    - https://www.n00py.io/2021/05/dumping-plaintext-rdp-credentials-from-svchost-exe/
    - https://pentestlab.blog/tag/svchost/
author: Swachchhanda Shrawan Poudel
date: 2024-02-12
tags:
    - attack.t1003
    - attack.credential-access
logsource:
    product: windows
    category: process_creation
detection:
    selection_img:
        - Image|endswith: '\sc.exe'
        - OriginalFileName: 'sc.exe'
    selection_cli:
        CommandLine|contains: 'query'
    selection_cmd:
        # Note: add more interesting services
        CommandLine|contains: 'termservice'
    condition: all of selection_*
falsepositives:
    - Unknown
# Note: can be upgraded to medium after an initial baseline
level: low

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://www.n00py.io/2021/05/dumping-plaintext-rdp-credentials-from-svchost-exe/
• https://pentestlab.blog/tag/svchost/