Sigma rule: Potential EmpireMonkey Activity

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-5b5c761b7671, updated 2023-03-09T00:00:00.000Z.

Rule

Title
Potential EmpireMonkey Activity
Status
test
Level
high
Author
Markus Neis, Nasreddine Bencherchali (Nextron Systems)
Date
2019-04-02
Modified
2023-03-09
File
rules-emerging-threats/2019/TA/EmpireMonkey/proc_creation_win_apt_empiremonkey.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects potential EmpireMonkey APT activity

Log source

product
windows
category
process_creation

Detection

selection:
    CommandLine|contains|all:
        - '/e:jscript' # This is a guess since the report doesn't mention the method of execution. This assumes that it is achieved via specifying the execution engine
        - '\Local\Temp\Errors.bat'
condition: selection

False positives (as the rule lists them)

  • Unlikely

Tags

  • attack.stealth
  • attack.t1218.010
  • 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/2019/TA/EmpireMonkey/proc_creation_win_apt_empiremonkey.yml

Sources and licences

  • SigmaHQ

    "Potential EmpireMonkey Activity" by Markus Neis, Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2019/TA/EmpireMonkey/proc_creation_win_apt_empiremonkey.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 EmpireMonkey Activity",
entity page, dataset version ref-5b5c761b7671, updated 2023-03-09T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/10152a7b-b566-438f-a33c-390b607d1c8d (accessed 2026-11-03).
Underlying source: SigmaHQ rule 10152a7b-b566-438f-a33c-390b607d1c8d, 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.