Sigma rule: Potential Winnti Dropper Activity

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-70814df59809, updated 2023-01-05T00:00:00.000Z.

Rule

Title
Potential Winnti Dropper Activity
Status
test
Level
high
Author
Alexander Rausch
Date
2020-06-24
Modified
2023-01-05
File
rules/windows/file/file_event/file_event_win_redmimicry_winnti_filedrop.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects files dropped by Winnti as described in RedMimicry Winnti playbook

Log source

product
windows
category
file_event

Detection

selection:
    TargetFilename|endswith:
        - '\gthread-3.6.dll'
        - '\sigcmm-2.4.dll'
        - '\Windows\Temp\tmp.bat'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.stealth
  • attack.t1027

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/file/file_event/file_event_win_redmimicry_winnti_filedrop.yml

Sources and licences

  • SigmaHQ

    "Potential Winnti Dropper Activity" by Alexander Rausch (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/file/file_event/file_event_win_redmimicry_winnti_filedrop.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 Winnti Dropper Activity",
entity page, dataset version ref-70814df59809, updated 2023-01-05T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/130c9e58-28ac-4f83-8574-0a4cc913b97e (accessed 2026-11-03).
Underlying source: SigmaHQ rule 130c9e58-28ac-4f83-8574-0a4cc913b97e, 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.