Sigma rule: WmiPrvSE Spawned A Process

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-67b2c2ccf65b, updated 2023-03-23T00:00:00.000Z.

Rule

Title
WmiPrvSE Spawned A Process
Status
stable
Level
medium
Author
Roberto Rodriguez @Cyb3rWard0g
Date
2019-08-15
Modified
2023-03-23
File
rules/windows/process_creation/proc_creation_win_wmiprvse_spawning_process.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects WmiPrvSE spawning a process

Log source

product
windows
category
process_creation

Detection

selection:
    ParentImage|endswith: '\WmiPrvSe.exe'
filter_logonid:
    LogonId:
        - '0x3e7'  # LUID 999 for SYSTEM
        - 'null'   # too many false positives
filter_system_user:
    User|contains: # covers many language settings
        - 'AUTHORI'
        - 'AUTORI'
filter_wmiprvse:
    Image|endswith: '\WmiPrvSE.exe'
filter_werfault:
    Image|endswith: '\WerFault.exe'
filter_null:  # some backends need the null value in a separate expression
    LogonId: null
condition: selection and not 1 of filter_*

False positives (as the rule lists them)

  • False positives are expected (e.g. in environments where WinRM is used legitimately)

Tags

  • attack.execution
  • attack.t1047

MITRE ATT&CK ids this rule names

Related rules

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_wmiprvse_spawning_process.yml

Sources and licences

  • SigmaHQ

    "WmiPrvSE Spawned A Process" by Roberto Rodriguez @Cyb3rWard0g (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_wmiprvse_spawning_process.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: WmiPrvSE Spawned A Process",
entity page, dataset version ref-67b2c2ccf65b, updated 2023-03-23T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/d21374ff-f574-44a7-9998-4a8c8bf33d7d (accessed 2026-11-03).
Underlying source: SigmaHQ rule d21374ff-f574-44a7-9998-4a8c8bf33d7d, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.