Sigma rule: Rhadamanthys Stealer Module Launch Via Rundll32.EXE

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-7bd83c5de632, updated 2023-02-05T00:00:00.000Z.

Rule

Title
Rhadamanthys Stealer Module Launch Via Rundll32.EXE
Status
test
Level
medium
Author
TropChaud
Date
2023-01-26
Modified
2023-02-05
File
rules-emerging-threats/2023/Malware/Rhadamanthys/proc_creation_win_malware_rhadamanthys_stealer_dll_launch.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the use of Rundll32 to launch an NSIS module that serves as the main stealer capability of Rhadamanthys infostealer, as observed in reports and samples in early 2023

Log source

product
windows
category
process_creation

Detection

selection_rundll32:
    - OriginalFileName: 'RUNDLL32.EXE'
    - Image|endswith: '\rundll32.exe'
selection_dll:
    CommandLine|contains: 'nsis_uns'
selection_export_function:
    CommandLine|contains: 'PrintUIEntry'
condition: all of selection_*

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.stealth
  • attack.t1218.011
  • 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/2023/Malware/Rhadamanthys/proc_creation_win_malware_rhadamanthys_stealer_dll_launch.yml

Sources and licences

  • SigmaHQ

    "Rhadamanthys Stealer Module Launch Via Rundll32.EXE" by TropChaud (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/Malware/Rhadamanthys/proc_creation_win_malware_rhadamanthys_stealer_dll_launch.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: Rhadamanthys Stealer Module Launch Via Rundll32.EXE",
entity page, dataset version ref-7bd83c5de632, updated 2023-02-05T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/5cdbc2e8-86dd-43df-9a1a-200d4745fba5 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 5cdbc2e8-86dd-43df-9a1a-200d4745fba5, 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.