title: CobaltStrike Process Patterns
author: Florian Roth
date: 2021/07/27
description: Detects process patterns found in Cobalt Strike beacon activity (see
    reference for more details)
detection:
    SELECTION_1:
        EventID: 1
    SELECTION_10:
        CommandLine: '*\whoami.exe*'
    SELECTION_11:
        ParentImage: '*\dllhost.exe'
    SELECTION_12:
        Image: '*\cmd.exe'
    SELECTION_13:
        ParentImage: '*\runonce.exe'
    SELECTION_14:
        ParentCommandLine: '*\runonce.exe'
    SELECTION_2:
        CommandLine: '*\cmd.exe /C whoami*'
    SELECTION_3:
        ParentImage: C:\Temp*
    SELECTION_4:
        CommandLine: '*conhost.exe 0xffffffff -ForceV1*'
    SELECTION_5:
        ParentCommandLine: '*/C whoami*'
    SELECTION_6:
        ParentCommandLine: '*cmd.exe /C echo*'
    SELECTION_7:
        ParentCommandLine: '* > \\.\pipe*'
    SELECTION_8:
        CommandLine: '*cmd.exe /c echo*'
    SELECTION_9:
        CommandLine: '*> \\.\pipe*'
    condition: (SELECTION_1 and ((SELECTION_2 and SELECTION_3) or (SELECTION_4 and
        (SELECTION_5 or SELECTION_6 or SELECTION_7)) or ((SELECTION_8 or SELECTION_9
        or SELECTION_10) and SELECTION_11) or (SELECTION_12 and SELECTION_13 and SELECTION_14)))
falsepositives:
- Other programs that cause these patterns (please report)
id: f35c5d71-b489-4e22-a115-f003df287317
level: high
logsource:
    category: process_creation
    product: windows
modified: 2021/08/30
references:
- https://hausec.com/2021/07/26/cobalt-strike-and-tradecraft/
- https://thedfirreport.com/2021/08/29/cobalt-strike-a-defenders-guide/
status: experimental
tags:
- attack.execution
yml_filename: win_cobaltstrike_process_patterns.yml
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation