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P4T12ICK
67 lines
2.5 KiB
YAML
67 lines
2.5 KiB
YAML
name: Remote System Discovery with Net
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id: 9df16706-04a2-41e2-bbfe-9b38b34409d3
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version: 1
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date: '2021-08-30'
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author: Mauricio Velazco, Splunk
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type: Hunting
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datamodel:
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- Endpoint
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description: This analytic looks for the execution of `net.exe` or `net1.exe` with
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command-line arguments utilized to discover remote systems. The argument `domain
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computers /domain` returns a list of all domain computers. Red Teams and adversaries
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alike use net.exe to identify remote systems for situational awareness and Active
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Directory Discovery.
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Processes where (Processes.process_name="net.exe"
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OR Processes.process_name="net1.exe") (Processes.process="*domain computers*" AND
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Processes.process=*/do*) OR (Processes.process="*view*" AND Processes.process=*/do*)
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by Processes.dest Processes.user Processes.parent_process Processes.process_name
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Processes.process Processes.process_id Processes.parent_process_id | `drop_dm_object_name(Processes)`
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| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `remote_system_discovery_with_net_filter`'
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how_to_implement: To successfully implement this search you need to be ingesting information
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on process that include the name of the process responsible for the changes from
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your endpoints into the `Endpoint` datamodel in the `Processes` node.
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known_false_positives: Administrators or power users may use this command for troubleshooting.
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references:
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- https://attack.mitre.org/techniques/T1018/
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tags:
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analytic_story:
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- Active Directory Discovery
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confidence: 50
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context:
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- Source:Endpoint
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- Stage:Discovery
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- Stage:Recon
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1018/AD_discovery/windows-sysmon.log
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impact: 30
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kill_chain_phases:
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- Reconnaissance
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message: Remote system discovery enumeration on $dest$ by $user$
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mitre_attack_id:
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- T1018
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observable:
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- name: dest
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type: Endpoint
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role:
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- Victim
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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required_fields:
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- Processes.dest
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- Processes.user
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- Processes.parent_process_name
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- Processes.parent_process
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- Processes.original_file_name
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- Processes.process_name
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- Processes.process
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- Processes.process_id
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- Processes.parent_process_path
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- Processes.process_path
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- Processes.parent_process_id
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risk_score: 15
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security_domain: endpoint
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asset_type: Endpoint
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