This search looks for scripts launched via WMI.
- Type: TTP
- Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
- Datamodel: Endpoint
- Last Updated: 2020-03-16
- Author: Rico Valdez, Michael Haag, Splunk
- ID: aa73f80d-d728-4077-b226-81ea0c8be589
Kill Chain Phase
- Actions on Objectives
- CIS 3
- CIS 5
1 2 3 4 5 6 | tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where Processes.process_name=scrcons.exe by Processes.dest Processes.user Processes.parent_process Processes.process_name Processes.process Processes.process_id Processes.parent_process_id | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `script_execution_via_wmi_filter`
The SPL above uses the following Macros:
script_execution_via_wmi_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
List of fields required to use this analytic.
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 launch scripts for legitimate purposes. Filter as needed.
Associated Analytic Story
|36.0||60||60||A wmic.exe process $process_name$ taht execute script in host $dest$|
The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.
source | version: 4