Sigma rule: Lace Tempest Malware Loader Execution

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-c772c7c498d8, updated 2023-11-09T00:00:00.000Z.

Rule

Title
Lace Tempest Malware Loader Execution
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-11-09
File
rules-emerging-threats/2023/TA/Lace-Tempest/proc_creation_win_apt_lace_tempest_loader_execution.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects execution of a specific binary based on filename and hash used by Lace Tempest to load additional malware as reported by SysAid Team

Log source

product
windows
category
process_creation

Detection

selection_img:
    Image|endswith: ':\Program Files\SysAidServer\tomcat\webapps\usersfiles\user.exe'
selection_hash:
    Hashes|contains: 'SHA256=B5ACF14CDAC40BE590318DEE95425D0746E85B1B7B1CBD14DA66F21F2522BF4D'
condition: 1 of selection_*

False positives (as the rule lists them)

  • Unlikely

Tags

  • attack.execution
  • detection.emerging-threats

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/TA/Lace-Tempest/proc_creation_win_apt_lace_tempest_loader_execution.yml

Sources and licences

  • SigmaHQ

    "Lace Tempest Malware Loader Execution" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/TA/Lace-Tempest/proc_creation_win_apt_lace_tempest_loader_execution.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: Lace Tempest Malware Loader Execution",
entity page, dataset version ref-c772c7c498d8, updated 2023-11-09T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/745ea50b-9673-4ba7-9426-cb45cf4a8e6d (accessed 2026-11-03).
Underlying source: SigmaHQ rule 745ea50b-9673-4ba7-9426-cb45cf4a8e6d, 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.