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name: Remcos client registry install entry
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id: f2a1615a-1d63-11ec-97d2-acde48001122
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version: 1
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date: '2021-09-24'
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author: Rod Soto
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type: TTP
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datamodel:
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- Endpoint
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description: This search detects registry key license at host where Remcos RAT agent is installed.
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search: '| tstats `security_content_summariesonly` count values(Registry.registry_key_name)
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as registry_key_name values(Registry.registry_path) as registry_path min(_time)
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as firstTime max(_time) as lastTime FROM datamodel=Endpoint.Registry where (Registry.registry_path=*\\Software\\Remcos*)|
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`security_content_ctime(lastTime)` | `security_content_ctime(firstTime)` | `drop_dm_object_name(Registry)` | `remcos_client_registry_install_entry_filter`'
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how_to_implement: In order to successfully implement this search, you need to be ingesting
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logs with the TargetObject registry key, registry Details from your endpoints.
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If you are using Sysmon, you must have at least version 6.0.4 of the Sysmon TA.
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known_false_positives: unknown
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references:
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- https://attack.mitre.org/software/S0332/
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tags:
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analytic_story:
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- Remcos
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dataset:
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- https://github.com/splunk/attack_data/blob/master/datasets/malware/remcos/remcos_panel_client/agent_license.log
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kill_chain_phases:
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- Exploitation
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mitre_attack_id:
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- T1112
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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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- _time
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- Registry.registry_path
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- Registry.registry_key_name
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security_domain: endpoint
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impact: 90
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confidence: 100
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# (impact * confidence)/100
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risk_score: 90
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context:
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message: A registry entry $registry_path$ with registry value $registry_key_name$
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related to Remcos RAT in host $dest$
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observable:
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name: dest
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type: Hostname
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role:
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- Victim
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name: Remcos client registry install entry Unit Test
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tests:
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- name: Remcos client registry install entry
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file: endpoint/remcos_client_registry_install_entry.yml
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pass_condition: '| stats count | where count > 0'
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earliest_time: '-15d'
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latest_time: 'now'
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attack_data:
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- file_name: agent_license.log
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data: https://github.com/splunk/attack_data/blob/master/datasets/malware/remcos/remcos_panel_client/agent_license.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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