Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT LandUpdate808 Domain in TLS SNI (vfclan .com)"; flow:established,to_server; tls.sni; bsize:10; content:"vfclan.com"; fast_pattern; reference:url,malasada.tech/the-landupdate808-fake-update-variant/; classtype:exploit-kit; sid:2061002; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2025_03_20, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Exploit_Kit, tag LandUpdate808, tag compromised_website, updated_at 2025_03_21, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1189, mitre_technique_name Drive_by_Compromise;)