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Description

This search looks for the creation of WMI permanent event subscriptions.

  • Type: TTP
  • Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
  • Datamodel:
  • Last Updated: 2018-10-23
  • Author: Rico Valdez, Splunk
  • ID: 71bfdb13-f200-4c6c-b2c9-a2e07adf437d

ATT&CK

ID Technique Tactic
T1047 Windows Management Instrumentation Execution
`wmi` EventCode=5861 Binding 
| rex field=Message "Consumer =\s+(?<consumer>[^;
|^$]+)" 
| search consumer!="NTEventLogEventConsumer=\"SCM Event Log Consumer\"" 
| stats count min(_time) as firstTime max(_time) as lastTime by ComputerName, consumer, Message 
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)` 
| rename ComputerName as dest 
| `wmi_permanent_event_subscription_filter`

Associated Analytic Story

How To Implement

To successfully implement this search, you must be ingesting the Windows WMI activity logs. This can be done by adding a stanza to inputs.conf on the system generating logs with a title of [WinEventLog://Microsoft-Windows-WMI-Activity/Operational].

Required field

  • _time
  • EventCode
  • Message
  • consumer
  • ComputerName

Kill Chain Phase

  • Actions on Objectives

Known False Positives

Although unlikely, administrators may use event subscriptions for legitimate purposes.

Reference

Test Dataset

Replay any dataset to Splunk Enterprise by using our replay.py tool or the UI. Alternatively you can replay a dataset into a Splunk Attack Range

source | version: 1