Sigma rule: LPE InstallerFileTakeOver PoC CVE-2021-41379

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-3ebe47a0dae6, updated 2022-07-12T00:00:00.000Z.

Rule

Title
LPE InstallerFileTakeOver PoC CVE-2021-41379
Status
test
Level
high
Author
Florian Roth (Nextron Systems)
Date
2021-11-22
Modified
2022-07-12
File
rules-emerging-threats/2021/Exploits/CVE-2021-41379/win_vul_cve_2021_41379.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects PoC tool used to exploit LPE vulnerability CVE-2021-41379

Log source

product
windows
service
application

Detection

selection:
    EventID: 1033
    Provider_Name: 'MsiInstaller'
    Data|contains: 'test pkg'
condition: selection

False positives (as the rule lists them)

  • Other MSI packages for which your admins have used that name

Tags

  • attack.initial-access
  • attack.t1190
  • detection.emerging-threats

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-emerging-threats/2021/Exploits/CVE-2021-41379/win_vul_cve_2021_41379.yml

Sources and licences

  • SigmaHQ

    "LPE InstallerFileTakeOver PoC CVE-2021-41379" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2021/Exploits/CVE-2021-41379/win_vul_cve_2021_41379.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: LPE InstallerFileTakeOver PoC CVE-2021-41379",
entity page, dataset version ref-3ebe47a0dae6, updated 2022-07-12T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/7dbb86de-a0cc-494c-8aa8-b2996c9ef3c8 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 7dbb86de-a0cc-494c-8aa8-b2996c9ef3c8, 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.