{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/products/immunet-protect/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":["Secure Endpoint","Immunet Protect"],"_cs_severities":["high"],"_cs_tags":["defense-evasion","endpoint","cisco"],"_cs_type":"advisory","_cs_vendors":["Cisco"],"content_html":"\u003cp\u003eThis threat brief addresses the potential tampering of Cisco Secure Endpoint\u0026rsquo;s Immunet Protect service. The technique involves leveraging the \u003ccode\u003esfc.exe\u003c/code\u003e utility, a legitimate component within the Cisco Secure Endpoint installation, to stop the Immunet service. The abuse of \u003ccode\u003esfc.exe\u003c/code\u003e with the \u003ccode\u003e-k\u003c/code\u003e parameter is a critical indicator, as it\u0026rsquo;s not a typical administrative function and signals a deliberate attempt to weaken endpoint defenses. This activity matters because a compromised endpoint with disabled security measures can lead to further exploitation, lateral movement, and data exfiltration. The technique was observed in the Splunk security content and can be detected via endpoint telemetry.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eInitial access is assumed to have been achieved via other means (e.g., phishing, exploit).\u003c/li\u003e\n\u003cli\u003eThe attacker gains a foothold on the targeted endpoint.\u003c/li\u003e\n\u003cli\u003eThe attacker identifies the presence of Cisco Secure Endpoint and Immunet Protect.\u003c/li\u003e\n\u003cli\u003eThe attacker executes \u003ccode\u003esfc.exe\u003c/code\u003e with the \u003ccode\u003e-k\u003c/code\u003e parameter, specifically targeting the Immunet Protect service.\u003c/li\u003e\n\u003cli\u003eThe command execution stops the Immunet Protect service, effectively disabling real-time protection.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the weakened security posture to deploy malware or execute malicious scripts.\u003c/li\u003e\n\u003cli\u003eThe attacker attempts lateral movement to other systems on the network.\u003c/li\u003e\n\u003cli\u003eThe attacker achieves their objective (e.g., data theft, ransomware deployment) without detection.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eA successful attack can lead to the disabling of real-time protection offered by Immunet Protect, a component of Cisco Secure Endpoint. This allows attackers to bypass endpoint security measures and execute malicious code without detection. The impact may include data breaches, ransomware infections, and further compromise of systems within the network. The number of victims depends on the scope of the attacker\u0026rsquo;s lateral movement after initial compromise.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Windows Cisco Secure Endpoint Stop Immunet Service Via Sfc\u0026rdquo; to your SIEM to detect the execution of \u003ccode\u003esfc.exe\u003c/code\u003e with the \u003ccode\u003e-k\u003c/code\u003e parameter (see rules section).\u003c/li\u003e\n\u003cli\u003eEnable Sysmon process creation logging to capture command-line arguments for process monitoring and detection (see logsource).\u003c/li\u003e\n\u003cli\u003eInvestigate any instances of \u003ccode\u003esfc.exe\u003c/code\u003e execution with the \u003ccode\u003e-k\u003c/code\u003e parameter, especially when originating from unusual parent processes or locations.\u003c/li\u003e\n\u003cli\u003eImplement strict process whitelisting to prevent unauthorized execution of \u003ccode\u003esfc.exe\u003c/code\u003e from non-standard paths.\u003c/li\u003e\n\u003cli\u003eMonitor for unusual process behavior following the execution of \u003ccode\u003esfc.exe\u003c/code\u003e, such as the creation of suspicious files or network connections.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"/briefs/2024-01-03-cisco-secure-endpoint-tampering/","summary":"An attacker attempts to disable the Immunet Protect service of Cisco Secure Endpoint by leveraging the `sfc.exe` utility with the `-k` parameter, potentially blinding the EDR for further compromise.","title":"Cisco Secure Endpoint Tampering via SFC Utility","url":"https://feed.craftedsignal.io/briefs/2024-01-03-cisco-secure-endpoint-tampering/"}],"language":"en","title":"CraftedSignal Threat Feed — Immunet Protect","version":"https://jsonfeed.org/version/1.1"}