splunk-security_content/docs/_posts/2021-09-07-system_information_discovery_detection.md

title, excerpt, categories, last_modified_at, toc, toc_label, tags

title	excerpt	categories	last_modified_at	toc	toc_label	tags
System Information Discovery Detection	System Information Discovery	Endpoint	2021-09-07	true		System Information Discovery Discovery Splunk Enterprise Splunk Enterprise Security Splunk Cloud Endpoint

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Description

Detect system information discovery techniques used by attackers to understand configurations of the system to further exploit it.

• Type: TTP
• Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
• Datamodel: Endpoint
• Last Updated: 2021-09-07
• Author: Patrick Bareiss, Splunk
• ID: 8e99f89e-ae58-4ebc-bf52-ae0b1a277e72

ATT&CK

ID	Technique	Tactic
T1082	System Information Discovery	Discovery

Search

| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where (Processes.process="*wmic* qfe*" OR Processes.process=*systeminfo* OR Processes.process=*hostname*) by Processes.user Processes.process_name Processes.process Processes.dest Processes.parent_process_name 
| `drop_dm_object_name(Processes)` 
| eventstats dc(process) as dc_processes_by_dest by dest 
| where dc_processes_by_dest > 2 
| stats values(process) as processes min(firstTime) as firstTime max(lastTime) as lastTime by user, dest parent_process_name 
| `security_content_ctime(firstTime)` 
| `security_content_ctime(lastTime)` 
| `system_information_discovery_detection_filter`

Associated Analytic Story

• Discovery Techniques

How To Implement

To successfully implement this search you need to be ingesting information on process that include the name of the process responsible for the changes from your endpoints into the Endpoint datamodel in the Processes node.

Required field

• _time
• Processes.process
• Processes.user
• Processes.process_name
• Processes.dest

Kill Chain Phase

• Actions on Objectives

Known False Positives

Administrators debugging servers

RBA

Risk Score	Impact	Confidence	Message
15.0	30	50	Potential system information discovery behavior on dest by User

Reference

• https://oscp.infosecsanyam.in/priv-escalation/windows-priv-escalation

Test Dataset

Replay any dataset to Splunk Enterprise by using our replay.py tool or the UI. Alternatively you can replay a dataset into a Splunk Attack Range

• https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1082/atomic_red_team/windows-sysmon.log

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