splApache-2.0from splunk/security_content

GetWmiObject Ds Computer with PowerShell

The following analytic detects the execution of `powershell.exe` with command-line arguments that utilize the `Get-WmiObject` cmdlet to discover remote systems, specifically targeting the `DS_Computer` parameter. This detection 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 enumerate domain computers and gather situational awareness within Active Directory. If confirmed malicious, this behavior could allow attackers to map the network, identify critical systems, and plan further attacks, potentially leading to unauthorized access and data exfiltration.

Quality

FP risk

—

Forks

Views

Rule sourcedetections/endpoint/getwmiobject_ds_computer_with_powershell.yml

| tstats `security_content_summariesonly`
  count min(_time) as firstTime
        max(_time) as lastTime

from datamodel=Endpoint.Processes where

(
    `process_powershell`
    OR
    `process_cmd`
)
AND
Processes.process = "*Get-WmiObject*"
Processes.process = "*namespace *"
Processes.process = "*root\\directory\\ldap*"
Processes.process = "*class *"
Processes.process = "* ds_computer*"

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)`
| `getwmiobject_ds_computer_with_powershell_filter`