splApache-2.0from splunk/security_content

Domain Account Discovery with Dsquery

The following analytic identifies the execution of `dsquery.exe` with command-line arguments used to discover domain users. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line executions. This activity is significant as it indicates potential reconnaissance efforts by adversaries to map out domain users, which is a common precursor to further attacks. If confirmed malicious, this behavior could allow attackers to gain insights into user accounts, facilitating subsequent actions like privilege escalation or lateral movement within the network.

Quality

FP risk

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Forks

Views

Rule sourcedetections/endpoint/domain_account_discovery_with_dsquery.yml

| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime FROM datamodel=Endpoint.Processes
  WHERE Processes.process_name="dsquery.exe"
    AND
    Processes.process = "*user*"
  BY Processes.action Processes.dest Processes.original_file_name
     Processes.parent_process Processes.parent_process_exec Processes.parent_process_guid
     Processes.parent_process_id Processes.parent_process_name Processes.parent_process_path
     Processes.process Processes.process_exec Processes.process_guid
     Processes.process_hash Processes.process_id Processes.process_integrity_level
     Processes.process_name Processes.process_path Processes.user
     Processes.user_id Processes.vendor_product
| `drop_dm_object_name(Processes)`
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `domain_account_discovery_with_dsquery_filter`