Sigma rule: Windows Update Client LOLBIN

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-8b78745fa187, updated 2023-11-11T00:00:00.000Z.

SigmaHQ marks this rule as deprecated.

Rule

Title
Windows Update Client LOLBIN
Status
deprecated
Level
high
Author
FPT.EagleEye Team
Date
2020/10/17
Modified
2023/11/11
File
deprecated/windows/proc_creation_win_wuauclt_execution.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects code execution via the Windows Update client (wuauclt)

Log source

product
windows
category
process_creation

Detection

selection_img:
    - Image|endswith: '\wuauclt.exe'
    - OriginalFileName: 'wuauclt.exe'
selection_cli:
    CommandLine|contains|all:
        - '/UpdateDeploymentProvider'
        - '/RunHandlerComServer'
        - '.dll'
filter:
    CommandLine|contains:
        - ' /ClassId '
        - ' wuaueng.dll '
condition: all of selection* and not filter

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.command_and_control
  • attack.defense_evasion
  • attack.t1105
  • 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_wuauclt_execution.yml

Sources and licences

  • SigmaHQ

    "Windows Update Client LOLBIN" by FPT.EagleEye Team (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/deprecated/windows/proc_creation_win_wuauclt_execution.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: Windows Update Client LOLBIN",
entity page, dataset version ref-8b78745fa187, updated 2023-11-11T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/d7825193-b70a-48a4-b992-8b5b3015cc11 (accessed 2026-11-03).
Underlying source: SigmaHQ rule d7825193-b70a-48a4-b992-8b5b3015cc11, 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.