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Windows Account or Group Discovery

This rule identifies the execution of commands that enumerates account or group information. Adversaries may use built-in applications to get a listing of local system or domain accounts and groups.

Rule type: eql
Rule indices:

  • logs-endpoint.events.process-*

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

Version: ?
Rule authors:

  • Elastic

Rule license: Elastic License v2

process where host.os.type == "windows" and event.type == "start" and
(
  (
   (
    (process.name : "net.exe" or process.pe.original_file_name == "net.exe") or
    (
     (process.name : "net1.exe" or process.pe.original_file_name == "net1.exe") and
     not process.parent.name : "net.exe"
    )
   ) and process.args : ("accounts", "group", "user", "localgroup") and not process.args : "/add"
  ) or
  (process.name:("dsquery.exe", "dsget.exe") and process.args:("*members*", "user")) or
  (process.name:"dsquery.exe" and process.args:"*filter*") or
  process.name:("quser.exe", "qwinsta.exe", "PsGetSID.exe", "PsLoggedOn.exe", "LogonSessions.exe", "whoami.exe") or
  (
    process.name: "cmd.exe" and
    (
      process.args : "echo" and process.args : (
        "%username%", "%userdomain%", "%userdnsdomain%",
        "%userdomain_roamingprofile%", "%userprofile%",
        "%homepath%", "%localappdata%", "%appdata%"
      ) or
      process.args : "set"
    )
  )
) and not process.parent.args: "C:\\Program Files (x86)\\Microsoft Intune Management Extension\\Content\\DetectionScripts\\*.ps1"
and not process.parent.name : "LTSVC.exe" and not user.id : "S-1-5-18"

Framework: MITRE ATT&CK