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Process Discovery Using Built-in Tools

This rule identifies the execution of commands that can be used to enumerate running processes. Adversaries may enumerate processes to identify installed applications and security solutions.

Rule type: eql
Rule indices:

  • logs-endpoint.events.process-*
  • logs-system.security*
  • logs-windows.*
  • winlogbeat-*

Rule Severity: low
Risk Score: 21
Runs every:
Searches indices from: now-9m
Maximum alerts per execution: ?
References:

Tags:

  • Domain: Endpoint
  • OS: Windows
  • Use Case: Threat Detection
  • Tactic: Discovery
  • Rule Type: BBR
  • Data Source: Elastic Defend
  • Data Source: Windows Security Event Logs

Version: ?
Rule authors:

  • Elastic

Rule license: Elastic License v2

process where host.os.type == "windows" and event.type == "start" and process.args != null and
  not user.id in ("S-1-5-18", "S-1-5-19", "S-1-5-20") and process.parent.executable != null and
  (
   process.name :("PsList.exe", "qprocess.exe") or

   (process.name : "powershell.exe" and process.args : ("*get-process*", "*Win32_Process*") and not process.parent.name in ("openaev-agent.exe", "cmd.exe", "Miro.exe", "Granola.exe", "Wispr Flow.exe")) or

   (process.name : "wmic.exe" and process.args : ("process", "*Win32_Process*") and not process.parent.name in ("Code.exe", "node.exe", "javaw.exe", "java.exe", "asus_framework.exe", "Evernote.exe", "RingCentral.exe", "Avaya Cloud.exe", "Arduino IDE.exe")) or

   (process.name : "tasklist.exe" and process.args_count == 1 and process.parent.args != "tasklist | findstr consent.exe") or

   (process.name : "query.exe" and process.args : ("process", "imagename*", "csv", "/fi"))
  ) and
  not process.working_directory like ("?:\\Program Files*", "D:\\*", "E:\\*") and
  not process.parent.executable like ("?:\\Program Files (x86)\\*.exe", "?:\\Program Files\\*.exe")

Framework: MITRE ATT&CK