Suspicious PowerShell Invocations - Generic - PowerShell Module

Description

Detects suspicious PowerShell invocation command parameters

Query · sigma

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*

Known false positives

  • Very special / sneaky PowerShell scripts
Raw source Suspicious PowerShell Invocations - Generic - PowerShell Module · Sigma
Esc
Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Suspicious PowerShell Invocations - Generic - PowerShell Module
id: bbb80e91-5746-4fbe-8898-122e2cafdbf4
related:
    - id: 3d304fda-78aa-43ed-975c-d740798a49c1
      type: derived
    - id: ed965133-513f-41d9-a441-e38076a0798f
      type: similar
status: test
description: Detects suspicious PowerShell invocation command parameters
references:
    - Internal Research
author: Florian Roth (Nextron Systems)
date: 2017-03-12
modified: 2023-01-03
tags:
    - attack.execution
    - attack.t1059.001
logsource:
    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*
falsepositives:
    - Very special / sneaky PowerShell scripts
level: high

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