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Description

This analytic identifies an endpoint that remotely connects to another endpoint to create a new service using sc.exe. On the remote endpoint, the new service will be created and this action will trigger the creation of EventCode 7045 along with all the resulting service information.

  • Type: Anomaly
  • Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
  • Datamodel: Endpoint
  • Last Updated: 2023-03-20
  • Author: Michael Haag, Splunk
  • ID: 0dc44d03-8c00-482d-ba7c-796ba7ab18c9

Annotations

ATT&CK

ATT&CK

ID Technique Tactic
T1543 Create or Modify System Process Persistence, Privilege Escalation
T1543.003 Windows Service Persistence, Privilege Escalation
Kill Chain Phase
  • Installation
  • Exploitation
NIST
  • DE.AE
CIS20
  • CIS 10
CVE 


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| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where Processes.process_name=sc.exe Processes.process IN ("*create*")  Processes.process="*\\\\*" by Processes.dest Processes.user Processes.parent_process_name Processes.process_name Processes.original_file_name Processes.process Processes.process_id Processes.parent_process_id 
| `drop_dm_object_name(Processes)` 
| `security_content_ctime(firstTime)` 
| `security_content_ctime(lastTime)` 
| `windows_remote_create_service_filter`

Macros

The SPL above uses the following Macros:

:information_source: windows_remote_create_service_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.

Required fields

List of fields required to use this analytic.

  • _time
  • Processes.dest
  • Processes.user
  • Processes.parent_process_name
  • Processes.parent_process
  • Processes.original_file_name
  • Processes.process_name
  • Processes.process
  • Processes.process_id
  • Processes.parent_process_path
  • Processes.process_path
  • Processes.parent_process_id

How To Implement

To implement this search, it is necessary to ingest information on processes that include the name of the process responsible for the changes from your endpoints into the Endpoint data model within the Processes node. Additionally, it is recommended to confirm that the latest version of CIM App (4.20 or higher) and the latest TA for the endpoint product are installed.

Known False Positives

Note that false positives may occur, and filtering may be necessary, especially when it comes to remote service creation by administrators or software management utilities.

Associated Analytic Story

RBA

Risk Score Impact Confidence Message
25.0 50 50 An instance of $parent_process_name$ spawning $process_name$ was identified on endpoint $dest$ by user $user$ attempting to create a remote service.

:information_source: The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.

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

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