Sigma rule: Invoke-Obfuscation Via Use Rundll32

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-f93156f162f2, updated 2022-12-30T00:00:00.000Z.

SigmaHQ marks this rule as deprecated.

Rule

Title
Invoke-Obfuscation Via Use Rundll32
Status
deprecated
Level
high
Author
Nikita Nazarov, oscd.community
Date
2019/10/08
Modified
2022/12/30
File
deprecated/windows/proc_creation_win_invoke_obfuscation_via_use_rundll32.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects Obfuscated Powershell via use Rundll32 in Scripts

Log source

product
windows
category
process_creation

Detection

selection:
    CommandLine|contains|all:
        - '&&'
        - 'rundll32'
        - 'shell32.dll'
        - 'shellexec_rundll'
    CommandLine|contains:
        - 'value'
        - 'invoke'
        - 'comspec'
        - 'iex'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.defense_evasion
  • attack.t1027
  • attack.execution
  • attack.t1059.001

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/deprecated/windows/proc_creation_win_invoke_obfuscation_via_use_rundll32.yml

Sources and licences

  • SigmaHQ

    "Invoke-Obfuscation Via Use Rundll32" by Nikita Nazarov, oscd.community (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/deprecated/windows/proc_creation_win_invoke_obfuscation_via_use_rundll32.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: Invoke-Obfuscation Via Use Rundll32",
entity page, dataset version ref-f93156f162f2, updated 2022-12-30T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/36c5146c-d127-4f85-8e21-01bf62355d5a (accessed 2026-11-03).
Underlying source: SigmaHQ rule 36c5146c-d127-4f85-8e21-01bf62355d5a, 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.