{"id":"d21374ff-f574-44a7-9998-4a8c8bf33d7d","title":"WmiPrvSE Spawned A Process","description":"Detects WmiPrvSE spawning a process","author":"Roberto Rodriguez @Cyb3rWard0g","status":"stable","level":"medium","date":"2019-08-15","modified":"2023-03-23","tags":["attack.execution","attack.t1047"],"technique_ids":["T1047"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["False positives are expected (e.g. in environments where WinRM is used legitimately)"],"references":["https://threathunterplaybook.com/hunts/windows/190815-RemoteServiceInstallation/notebook.html"],"source_path":"rules/windows/process_creation/proc_creation_win_wmiprvse_spawning_process.yml","source_sha256":"1f64706404695e11cb44dcd2d227bf790d03a29236d1d50aecd96d224baef804","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_wmiprvse_spawning_process.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: WmiPrvSE Spawned A Process\nid: d21374ff-f574-44a7-9998-4a8c8bf33d7d\nrelated:\n    - id: 8a582fe2-0882-4b89-a82a-da6b2dc32937\n      type: similar\n    - id: 692f0bec-83ba-4d04-af7e-e884a96059b6\n      type: similar\nstatus: stable\ndescription: Detects WmiPrvSE spawning a process\nreferences:\n    - https://threathunterplaybook.com/hunts/windows/190815-RemoteServiceInstallation/notebook.html\nauthor: Roberto Rodriguez @Cyb3rWard0g\ndate: 2019-08-15\nmodified: 2023-03-23\ntags:\n    - attack.execution\n    - attack.t1047\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        ParentImage|endswith: '\\WmiPrvSe.exe'\n    filter_logonid:\n        LogonId:\n            - '0x3e7'  # LUID 999 for SYSTEM\n            - 'null'   # too many false positives\n    filter_system_user:\n        User|contains: # covers many language settings\n            - 'AUTHORI'\n            - 'AUTORI'\n    filter_wmiprvse:\n        Image|endswith: '\\WmiPrvSE.exe'\n    filter_werfault:\n        Image|endswith: '\\WerFault.exe'\n    filter_null:  # some backends need the null value in a separate expression\n        LogonId: null\n    condition: selection and not 1 of filter_*\nfalsepositives:\n    - False positives are expected (e.g. in environments where WinRM is used legitimately)\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1047","id":"T1047","name":"Windows Management Instrumentation","page":"techniques/enterprise/T1047/"}],"data_path":"data/detection-rules/d21374ff-f574-44a7-9998-4a8c8bf33d7d.json","kind":"sigma"}