Sigma rule: Suspicious PowerShell Invocations - Generic - PowerShell Module

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-b86a42837ce3, updated 2023-01-03T00:00:00.000Z.

Rule

Title
Suspicious PowerShell Invocations - Generic - PowerShell Module
Status
test
Level
high
Author
Florian Roth (Nextron Systems)
Date
2017-03-12
Modified
2023-01-03
File
rules/windows/powershell/powershell_module/posh_pm_susp_invocation_generic.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects suspicious PowerShell invocation command parameters

Log source

product
windows
category
ps_module
definition
0ad03ef1-f21b-4a79-8ce8-e6900c54b65b

Detection

selection_encoded:
    ContextInfo|contains:
        - ' -enc '
        - ' -EncodedCommand '
        - ' -ec '
selection_hidden:
    ContextInfo|contains:
        - ' -w hidden '
        - ' -window hidden '
        - ' -windowstyle hidden '
        - ' -w 1 '
selection_noninteractive:
    ContextInfo|contains:
        - ' -noni '
        - ' -noninteractive '
condition: all of selection*

False positives (as the rule lists them)

  • Very special / sneaky PowerShell scripts

Tags

  • attack.execution
  • attack.t1059.001

MITRE ATT&CK ids this rule names

Related rules

References

  • Internal Research

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

Sources and licences

  • SigmaHQ

    "Suspicious PowerShell Invocations - Generic - PowerShell Module" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/powershell/powershell_module/posh_pm_susp_invocation_generic.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: Suspicious PowerShell Invocations - Generic - PowerShell Module",
entity page, dataset version ref-b86a42837ce3, updated 2023-01-03T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/bbb80e91-5746-4fbe-8898-122e2cafdbf4 (accessed 2026-11-03).
Underlying source: SigmaHQ rule bbb80e91-5746-4fbe-8898-122e2cafdbf4, 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.