mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
Eric
59 lines
3.2 KiB
YAML
59 lines
3.2 KiB
YAML
name: GetDomainController with PowerShell
|
|
id: 868ee0e4-52ab-484a-833a-6d85b7c028d0
|
|
version: 6
|
|
date: '2025-05-02'
|
|
author: Mauricio Velazco, Splunk
|
|
status: production
|
|
type: Hunting
|
|
description: The following analytic detects the execution of `powershell.exe` with
|
|
the `Get-DomainController` command, which is used to discover remote systems within
|
|
a Windows domain. This detection leverages data from Endpoint Detection and Response
|
|
(EDR) agents, focusing on process names and command-line arguments. Monitoring this
|
|
activity is crucial as it may indicate an attempt to enumerate domain controllers,
|
|
a common tactic in Active Directory discovery. If confirmed malicious, this activity
|
|
could allow attackers to gain situational awareness, potentially leading to further
|
|
exploitation and lateral movement within the network.
|
|
data_source:
|
|
- Sysmon EventID 1
|
|
- Windows Event Log Security 4688
|
|
- CrowdStrike ProcessRollup2
|
|
search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
|
|
as lastTime from datamodel=Endpoint.Processes where (Processes.process_name="powershell.exe")
|
|
(Processes.process=*Get-DomainController*) 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)` | `getdomaincontroller_with_powershell_filter`'
|
|
how_to_implement: The detection is based on data that originates from Endpoint Detection
|
|
and Response (EDR) agents. These agents are designed to provide security-related
|
|
telemetry from the endpoints where the agent is installed. To implement this search,
|
|
you must ingest logs that contain the process GUID, process name, and parent process.
|
|
Additionally, you must ingest complete command-line executions. These logs must
|
|
be processed using the appropriate Splunk Technology Add-ons that are specific to
|
|
the EDR product. The logs must also be mapped to the `Processes` node of the `Endpoint`
|
|
data model. Use the Splunk Common Information Model (CIM) to normalize the field
|
|
names and speed up the data modeling process.
|
|
known_false_positives: Administrators or power users may use PowerView for troubleshooting.
|
|
references:
|
|
- https://attack.mitre.org/techniques/T1018/
|
|
- https://powersploit.readthedocs.io/en/latest/Recon/Get-DomainController/
|
|
tags:
|
|
analytic_story:
|
|
- Active Directory Discovery
|
|
asset_type: Endpoint
|
|
mitre_attack_id:
|
|
- T1018
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
security_domain: endpoint
|
|
tests:
|
|
- name: True Positive Test
|
|
attack_data:
|
|
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1018/AD_discovery/windows-sysmon.log
|
|
source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
|
|
sourcetype: XmlWinEventLog
|