title: Invoke-Obfuscation Via Use Clip
id: db92dd33-a3ad-49cf-8c2c-608c3e30ace0
description: Detects Obfuscated Powershell via use Clip.exe in Scripts
status: experimental
author: Nikita Nazarov, oscd.community
date: 2020/10/09
references:
     - https://github.com/Neo23x0/sigma/issues/1009 #(Task29)
tags:
    - attack.defense_evasion
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    service: powershell
    definition: Script block logging must be enabled for 4104, Module Logging must be enabled for 4103
detection:
    selection_1:
        EventID: 4104
        ScriptBlockText|re: '(?i).*?echo.*clip.*&&.*(Clipboard|i`?n`?v`?o`?k`?e`?).*'
    selection_2:
        EventID: 4103
        Payload|re: '(?i).*?echo.*clip.*&&.*(Clipboard|i`?n`?v`?o`?k`?e`?).*'
    condition: 1 of them
falsepositives:
    - Unknown
level: high