WARNING THIS IS A EXPERIMENTAL object
We have not been able to test, simulate, or build datasets for this object. Use at your own risk. This analytic is NOT supported.
This search looks for the creation of WMI permanent event subscriptions.
- Type: TTP
Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
- Last Updated: 2018-10-23
- Author: Rico Valdez, Splunk
- ID: 71bfdb13-f200-4c6c-b2c9-a2e07adf437d
|T1047||Windows Management Instrumentation||Execution|
Kill Chain Phase
- Actions on Objectives
- CIS 3
- CIS 5
1 2 3 4 5 6 7 8 9 `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`
The SPL above uses the following Macros:
Note that wmi_permanent_event_subscription_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
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].
Known False Positives
Although unlikely, administrators may use event subscriptions for legitimate purposes.
Associated Analytic story
source | version: 1