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tccontre
67 lines
2.3 KiB
YAML
67 lines
2.3 KiB
YAML
name: Network Connection Discovery With Arp
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id: ae008c0f-83bd-4ed4-9350-98d4328e15d2
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version: 1
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date: '2021-09-10'
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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 `arp.exe` utilized to get a
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listing of network connections on a compromised system. Red Teams and adversaries
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alike may use arp.exe for situational awareness and Active 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="arp.exe")
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(Processes.process=*-a*) by Processes.dest Processes.user Processes.parent_process
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Processes.process_name Processes.process Processes.process_id Processes.parent_process_id
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| `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`
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| `network_connection_discovery_with_arp_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/T1049/
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tags:
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analytic_story:
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- Active Directory Discovery
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- Qakbot
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- Windows Post-Exploitation
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- Prestige Ransomware
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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/T1049/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: Network Connection discovery on $dest$ by $user$
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mitre_attack_id:
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- T1049
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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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