Sigma rule: Potential CVE-2023-36874 Exploitation - Fake Wermgr Execution

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-5a3301264cc2, updated 2023-08-23T00:00:00.000Z.

Rule

Title
Potential CVE-2023-36874 Exploitation - Fake Wermgr Execution
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-08-23
File
rules-emerging-threats/2023/Exploits/CVE-2023-36874/proc_creation_win_exploit_cve_2023_36874_fake_wermgr.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the execution of a renamed "cmd", "powershell" or "powershell_ise" binary. Attackers were seen using these binaries in a renamed form as "wermgr.exe" in exploitation of CVE-2023-36874

Log source

product
windows
category
process_creation

Detection

selection:
    OriginalFileName:
        - 'Cmd.Exe'
        - 'powershell_ise.EXE'
        - 'powershell.exe'
    Image|endswith: '\wermgr.exe'
condition: selection

False positives (as the rule lists them)

  • Unlikely

Tags

  • attack.execution
  • cve.2023-36874
  • detection.emerging-threats

CVEs 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/2023/Exploits/CVE-2023-36874/proc_creation_win_exploit_cve_2023_36874_fake_wermgr.yml

Sources and licences

  • SigmaHQ

    "Potential CVE-2023-36874 Exploitation - Fake Wermgr Execution" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/Exploits/CVE-2023-36874/proc_creation_win_exploit_cve_2023_36874_fake_wermgr.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: Potential CVE-2023-36874 Exploitation - Fake Wermgr Execution",
entity page, dataset version ref-5a3301264cc2, updated 2023-08-23T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/50dbc08b-60ce-40f1-a6b6-346497e34c88 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 50dbc08b-60ce-40f1-a6b6-346497e34c88, 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.