ServiceDll Hijack — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: medium. Source dates: 2022-02-04 / 2024-04-03.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: bdfcdafbf13bf826c31ee3bfb79c80193af392cafc55e40df467f1b25494c69a

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: ServiceDll Hijack
id: 612e47e9-8a59-43a6-b404-f48683f45bd6
status: test
description: |
    Detects changes to the "ServiceDLL" value related to a service in the registry.
    This is often used as a method of persistence.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1543.003/T1543.003.md#atomic-test-4---tinyturla-backdoor-service-w64time
    - https://www.hexacorn.com/blog/2013/09/19/beyond-good-ol-run-key-part-4/
author: frack113
date: 2022-02-04
modified: 2024-04-03
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.t1543.003
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains|all:
            - '\System\'
            - 'ControlSet'
            - '\Services\'
        TargetObject|endswith: '\Parameters\ServiceDll'
    filter_main_printextensionmanger:
        Details: 'C:\Windows\system32\spool\drivers\x64\3\PrintConfig.dll'
    filter_main_domain_controller:
        Image: 'C:\Windows\system32\lsass.exe'
        TargetObject|endswith: '\Services\NTDS\Parameters\ServiceDll'
        Details: '%%systemroot%%\system32\ntdsa.dll'
    filter_main_poqexec:
        Image: 'C:\Windows\System32\poqexec.exe'
    filter_optional_safetica:
        Image|endswith: '\regsvr32.exe'
        Details: 'C:\Windows\System32\STAgent.dll'
    condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
falsepositives:
    - Administrative scripts
    - Installation of a service
level: medium

Original YAML and metadata in JSON

False positives

• Administrative scripts
• Installation of a service

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1543.003/T1543.003.md#atomic-test-4---tinyturla-backdoor-service-w64time
• https://www.hexacorn.com/blog/2013/09/19/beyond-good-ol-run-key-part-4/