Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (TorrentLocker CnC)"; flow:established,to_client; tls.cert_serial; content:"00:B1:F4:FE:4C:79:ED:E9:98"; fast_pattern; tls.cert_subject; content:"C=XX"; content:"L=Default City"; reference:md5,bfd8db9ed284deb64c9e4fc5bfa758bd; reference:url,www.csis.dk/da/csis/news/4726/; classtype:domain-c2; sid:2021843; rev:3; metadata:attack_target Client_and_Server, created_at 2015_09_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_18, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)