Sigma rule: Potential Persistence Attempt Via ErrorHandler.Cmd

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-778830a4ea3c, updated 2022-12-19T00:00:00.000Z.

Rule

Title
Potential Persistence Attempt Via ErrorHandler.Cmd
Status
test
Level
medium
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2022-08-09
Modified
2022-12-19
File
rules/windows/file/file_event/file_event_win_errorhandler_persistence.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects creation of a file named "ErrorHandler.cmd" in the "C:\WINDOWS\Setup\Scripts\" directory which could be used as a method of persistence
The content of C:\WINDOWS\Setup\Scripts\ErrorHandler.cmd is read whenever some tools under C:\WINDOWS\System32\oobe\ (e.g. Setup.exe) fail to run for any reason.

Log source

product
windows
category
file_event

Detection

selection:
    TargetFilename|endswith: '\WINDOWS\Setup\Scripts\ErrorHandler.cmd'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.persistence

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/file/file_event/file_event_win_errorhandler_persistence.yml

Sources and licences

  • SigmaHQ

    "Potential Persistence Attempt Via ErrorHandler.Cmd" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/file/file_event/file_event_win_errorhandler_persistence.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 Persistence Attempt Via ErrorHandler.Cmd",
entity page, dataset version ref-778830a4ea3c, updated 2022-12-19T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/15904280-565c-4b73-9303-3291f964e7f9 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 15904280-565c-4b73-9303-3291f964e7f9, 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.