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Description

The following analytic identifies a non-standard parent process (not matching CMD, PowerShell, or Explorer) spawning ipconfig.exe or systeminfo.exe. This particular behavior was seen in FIN7's JSSLoader .NET payload. This is also typically seen when an adversary is injected into another process performing different discovery techniques. This event stands out as a TTP since these tools are commonly executed with a shell application or Explorer parent, and not by another application. This TTP is a good indicator for an adversary gathering host information, but one possible false positive might be an automated tool used by a system administator.

  • Type: TTP
  • Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
  • Datamodel: Endpoint
  • Last Updated: 2021-09-14
  • Author: Teoderick Contreras, Splunk
  • ID: 6c3f7dd8-153c-11ec-ac2d-acde48001122

ATT&CK

ID Technique Tactic
T1059 Command and Scripting Interpreter Execution
T1059.007 JavaScript Execution

| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where  (Processes.process_name = "ipconfig.exe" OR Processes.process_name = "systeminfo.exe") AND NOT (Processes.parent_process_name = "cmd.exe" OR Processes.parent_process_name = "powershell*" OR Processes.parent_process_name="pwsh.exe" OR Processes.parent_process_name = "explorer.exe") by Processes.parent_process_name Processes.parent_process Processes.process_name Processes.original_file_name Processes.process_id Processes.process Processes.dest Processes.user 
| `drop_dm_object_name(Processes)` 
| `security_content_ctime(firstTime)` 
| `security_content_ctime(lastTime)` 
| `cmdline_tool_not_executed_in_cmd_shell_filter`

Associated Analytic Story

How To Implement

To successfully implement this search you need to be ingesting information on process that include the name of the process responsible for the changes from your endpoints into the Endpoint datamodel in the Processes node. In addition, confirm the latest CIM App 4.20 or higher is installed and the latest TA for the endpoint product.

Required field

  • _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

Kill Chain Phase

  • Exploitation

Known False Positives

A network operator or systems administrator may utilize an automated host discovery application that may generate false positives. Filter as needed.

RBA

Risk Score Impact Confidence Message
56.0 70 80 A non-standard parent process $parent_process_name$ spawned child process $process_name$ to execute command-line tool on $dest$.

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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