Suspicious Processes Spawned by WinRM

 1title: Suspicious Processes Spawned by WinRM
 2id: 5cc2cda8-f261-4d88-a2de-e9e193c86716
 3status: test
 4description: Detects suspicious processes including shells spawnd from WinRM host process
 5author: Andreas Hunkeler (@Karneades), Markus Neis
 6references:
 7    - Internal Research
 8date: 2021/05/20
 9modified: 2022/07/14
10tags:
11    - attack.t1190
12    - attack.initial_access
13    - attack.persistence
14    - attack.privilege_escalation
15logsource:
16    category: process_creation
17    product: windows
18detection:
19    selection:
20        ParentImage|endswith: '\wsmprovhost.exe'
21        Image|endswith:
22            - '\cmd.exe'
23            - '\sh.exe'
24            - '\bash.exe'
25            - '\powershell.exe'
26            - '\pwsh.exe'
27            - '\wsl.exe'
28            - '\schtasks.exe'
29            - '\certutil.exe'
30            - '\whoami.exe'
31            - '\bitsadmin.exe'
32    condition: selection
33falsepositives:
34    - Legitimate WinRM usage
35level: high