sigmaDRL-1.1from SigmaHQ/sigma

Invoke-Obfuscation Via Stdin

Detects Obfuscated Powershell via Stdin in Scripts

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ATT&CK techniques

T1027 T1059.001

Rule sourcerules/windows/process_creation/proc_creation_win_hktl_invoke_obfuscation_via_stdin.yml

title: Invoke-Obfuscation Via Stdin
id: 9c14c9fa-1a63-4a64-8e57-d19280559490
status: test
description: Detects Obfuscated Powershell via Stdin in Scripts
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task28)
author: Nikita Nazarov, oscd.community
date: 2020-10-12
modified: 2024-04-16
tags:
    - attack.defense-evasion
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|re: '(?i)(set).*&&\s?set.*(environment|invoke|\$\{?input).*&&.*"'
    condition: selection
falsepositives:
    - Unknown
level: high