name: Process Execution via WMI
id: 24869767-8579-485d-9a4f-d9ddfd8f0cac
version: 4
date: '2020-03-16'
author: Rico Valdez, Michael Haag, Splunk
status: production
type: TTP
description: The following analytic identifies `WmiPrvSE.exe` spawning a process.
  This typically occurs when a process is instantiated from a local or remote process
  using `wmic.exe`. During triage, review parallel processes for suspicious behavior
  or commands executed. Review the process and command-line spawning from `wmiprvse.exe`.
  Contain and remediate the endpoint as necessary.
data_source:
- Sysmon Event ID 1
search:
  selection1:
    ParentImage: WmiPrvSE.exe
  condition: selection1
how_to_implement: You must be ingesting endpoint data that tracks process activity,
  including parent-child relationships from your endpoints to populate the Endpoint
  data model in the Processes node. The command-line arguments are mapped to the "process"
  field in the Endpoint data model.
known_false_positives: Although unlikely, administrators may use wmi to execute commands
  for legitimate purposes.
references: []
tags:
  analytic_story:
  - Suspicious WMI Use
  asset_type: Endpoint
  confidence: 70
  impact: 70
  message: A remote instance execution of wmic.exe that will spawn $parent_process_name$
    in host $dest$
  mitre_attack_id:
  - T1047
  observable:
  - name: dest
    type: Hostname
    role:
    - Victim
  - name: user
    type: User
    role:
    - Victim
  product:
  - Splunk Enterprise
  - Splunk Enterprise Security
  - Splunk Cloud
  risk_score: 49
  security_domain: endpoint
tests:
- name: True Positive Test
  attack_data:
  - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1047/atomic_red_team/windows-sysmon.log
    source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
    sourcetype: xmlwineventlog