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Unusual Process Execution on WBEM Path

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Unusual Process Execution on WBEM Path

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Identifies unusual processes running from the WBEM path, uncommon outside WMI-related Windows processes.

Rule type: eql

Rule indices:

logs-endpoint.events.*

Severity: low

Risk score: 21

Runs every: 60m

Searches indices from: now-119m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

Domain: Endpoint
OS: Windows
Use Case: Threat Detection
Tactic: Defense Evasion
Data Source: Elastic Defend
Rule Type: BBR

Version: 1

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

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process where host.os.type == "windows" and event.type == "start" and
  process.executable : ("?:\\Windows\\System32\\wbem\\*", "?:\\Windows\\SysWow64\\wbem\\*") and
  not process.name : (
    "mofcomp.exe",
    "scrcons.exe",
    "unsecapp.exe",
    "wbemtest.exe",
    "winmgmt.exe",
    "wmiadap.exe",
    "wmiapsrv.exe",
    "wmic.exe",
    "wmiprvse.exe"
  )

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
Technique:
- Name: Masquerading
- ID: T1036
- Reference URL: https://attack.mitre.org/techniques/T1036/

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