Sigma rule: Lolbin Unregmp2.exe Use As Proxy

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-5ab4bc3a2847, updated 2024-06-04T00:00:00.000Z.

Rule

Title
Lolbin Unregmp2.exe Use As Proxy
Status
test
Level
medium
Author
frack113
Date
2022-12-29
Modified
2024-06-04
File
rules/windows/process_creation/proc_creation_win_lolbin_unregmp2.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detect usage of the "unregmp2.exe" binary as a proxy to launch a custom version of "wmpnscfg.exe"

Log source

product
windows
category
process_creation

Detection

selection_img:
    - Image|endswith: '\unregmp2.exe'
    - OriginalFileName: 'unregmp2.exe'
selection_cmd:
    CommandLine|contains|windash: ' /HideWMP'
condition: all of selection_*

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.stealth
  • 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/rules/windows/process_creation/proc_creation_win_lolbin_unregmp2.yml

Sources and licences

  • SigmaHQ

    "Lolbin Unregmp2.exe Use As Proxy" by frack113 (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_lolbin_unregmp2.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: Lolbin Unregmp2.exe Use As Proxy",
entity page, dataset version ref-5ab4bc3a2847, updated 2024-06-04T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/727454c0-d851-48b0-8b89-385611ab0704 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 727454c0-d851-48b0-8b89-385611ab0704, 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.