Sigma rule: Invoke-Obfuscation Via Stdin

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-cb878a5161a6, updated 2023-04-23T00:00:00.000Z.

Rule

Title
Invoke-Obfuscation Via Stdin
Status
unsupported
Level
high
Author
Nikita Nazarov, oscd.community
Date
2020/10/12
Modified
2023/04/23
File
unsupported/windows/driver_load_invoke_obfuscation_via_stdin_services.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects Obfuscated Powershell via Stdin in Scripts

Log source

product
windows
category
driver_load

Detection

selection:
    ImagePath|re: '(?i).*(set).*&&\s?set.*(environment|invoke|\$?\{?input).*&&.*"'
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

Related rules

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/unsupported/windows/driver_load_invoke_obfuscation_via_stdin_services.yml

Sources and licences

  • SigmaHQ

    "Invoke-Obfuscation Via Stdin" by Nikita Nazarov, oscd.community (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/unsupported/windows/driver_load_invoke_obfuscation_via_stdin_services.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 Stdin",
entity page, dataset version ref-cb878a5161a6, updated 2023-04-23T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/82b66143-53ee-4369-ab02-de2c70cd6352 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 82b66143-53ee-4369-ab02-de2c70cd6352, 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.