Possible Dosfuscation Behavior (via process_creation)

title: Possible Dosfuscation Behavior (via process_creation)
id: 607cba82-b1a9-5bb1-b630-39fcb944a6c2
status: stable
description: This rule detects possible payload obfuscation via the commandline
references:
    - https://attack.mitre.org/techniques/T1059/
    - https://www.fireeye.com/content/dam/fireeye-www/blog/pdfs/dosfuscation-report.pdf
    - https://github.com/danielbohannon/Invoke-DOSfuscation
author: Huntrule Team
date: 2026-03-19
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains:
            - '^^'
            - '^|^'
            - ',;,'
            - ';;;;'
            - ';; ;;'
            - '(,(,'
            - '%COMSPEC:~'
            - ' c^m^d'
            - '^c^m^d'
            - ' c^md'
            - ' cm^d'
            - '^cm^d'
            - ' s^et '
            - ' s^e^t '
            - ' se^t '
    condition: selection
falsepositives:
    - Unknown
level: medium