Sigma rule: Monitoring Wuauclt.exe For Lolbas Execution Of DLL

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-108d9fd4e765, updated 2022-05-27T00:00:00.000Z.

Rule

Title
Monitoring Wuauclt.exe For Lolbas Execution Of DLL
Status
experimental
Level
medium
Author
Sreeman
Date
2020/10/29
Modified
2022/05/27
File
deprecated/windows/proc_creation_win_lolbas_execution_of_wuauclt.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Adversaries can abuse wuauclt.exe (Windows Update client) to run code execution by specifying an arbitrary DLL.

Log source

product
windows
category
process_creation

Detection

selection:
    CommandLine|contains|all:
        - 'wuauclt.exe'
        - '/UpdateDeploymentProvider'
        - '/Runhandlercomserver'
filter:
    CommandLine|contains:
        - 'wuaueng.dll'
        - 'UpdateDeploymentProvider.dll /ClassId'
condition: selection and not filter

False positives (as the rule lists them)

  • Wuaueng.dll which is a module belonging to Microsoft Windows Update.

Tags

  • attack.defense_evasion
  • attack.execution
  • attack.t1218

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/deprecated/windows/proc_creation_win_lolbas_execution_of_wuauclt.yml

Sources and licences

  • SigmaHQ

    "Monitoring Wuauclt.exe For Lolbas Execution Of DLL" by Sreeman (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/deprecated/windows/proc_creation_win_lolbas_execution_of_wuauclt.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Monitoring Wuauclt.exe For Lolbas Execution Of DLL",
entity page, dataset version ref-108d9fd4e765, updated 2022-05-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/ba1bb0cb-73da-42de-ad3a-de10c643a5d0 (accessed 2026-11-03).
Underlying source: SigmaHQ rule ba1bb0cb-73da-42de-ad3a-de10c643a5d0, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.