
title: CobaltStrike Load by Rundll32
author: Wojciech Lesicki
date: 2021/06/01
description: Rundll32 can be use by Cobalt Strike with StartW function to load DLLs
  from the command line.
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    CommandLine: '*rundll32.exe*'
  SELECTION_3:
    CommandLine: '*.dll*'
  SELECTION_4:
    CommandLine: '*StartW*'
  condition: (SELECTION_1 and SELECTION_2 and SELECTION_3 and SELECTION_4)
falsepositives:
- Unknown
id: ae9c6a7c-9521-42a6-915e-5aaa8689d529
level: critical
logsource:
  category: process_creation
  product: windows
references:
- https://www.cobaltstrike.com/help-windows-executable
- https://redcanary.com/threat-detection-report/
- https://thedfirreport.com/2020/10/18/ryuk-in-5-hours/
status: experimental
tags:
- attack.defense_evasion
- attack.t1218.011
ruletype: SIGMA
