Name:Reg exe used to hide files directories via registry keys id:61a7d1e6-f5d4-41d9-a9be-39a1ffe69459 version:4 date:2024-10-17 author:Bhavin Patel, Splunk status:deprecated type:TTP Description:The search looks for command-line arguments used to hide a file or directory using the reg add command. Data_source:
-Sysmon EventID 1
search:| tstats `security_content_summariesonly` values(Processes.process) as process min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where Processes.process_name = reg.exe Processes.process="*add*" Processes.process="*Hidden*" Processes.process="*REG_DWORD*" by Processes.process_name Processes.parent_process_name Processes.dest Processes.user| `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` |`security_content_ctime(lastTime)`| regex process = "(/d\s+2)" | `reg_exe_used_to_hide_files_directories_via_registry_keys_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:None at the moment References: drilldown_searches:
: tags: asset_type:Endpoint analytic_story: - 'Windows Defense Evasion Tactics' - 'Suspicious Windows Registry Activities' - 'Windows Persistence Techniques' confidence:50 impact:50 message:tbd mitre_attack_id: - 'T1564.001' observable: name:'dest' type:'Hostname' - role: - 'Victim' name:'user' type:'User' - role: - 'Victim' product: - 'Splunk Enterprise' - 'Splunk Enterprise Security' - 'Splunk Cloud' required_fields: - '_time' risk_score:25 security_domain:endpoint
