splApache-2.0from splunk/security_content
Windows Cisco Secure Endpoint Stop Immunet Service Via Sfc
The following analytic detects the use of the `sfc.exe` utility, in order to stop the Immunet Protect service. The Sfc.exe utility is part of Cisco Secure Endpoint installation. This detection leverages telemetry from the endpoint, focusing on command-line executions involving the `-k` parameter. This activity is significant as it indicates potential tampering with defensive mechanisms. If confirmed malicious, attackers could partially blind the EDR, enabling further compromise and lateral movement within the network.
Quality
67
FP risk
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Rule sourcedetections/endpoint/windows_cisco_secure_endpoint_stop_immunet_service_via_sfc.yml
| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where Processes.process_name="sfc.exe" Processes.process="* -k*" AND NOT Processes.process_path IN ("*:\\Windows\\System32\\*", "*:\\Windows\\SysWOW64\\*", ":\\Windows\\WinSxS\\*") by Processes.action Processes.dest Processes.original_file_name Processes.parent_process Processes.parent_process_exec Processes.parent_process_guid Processes.parent_process_id Processes.parent_process_name Processes.parent_process_path Processes.process Processes.process_exec Processes.process_guid Processes.process_hash Processes.process_id Processes.process_integrity_level Processes.process_name Processes.process_path Processes.user Processes.user_id Processes.vendor_product | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `windows_cisco_secure_endpoint_stop_immunet_service_via_sfc_filter`