Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Fingerprint Blacklist Malicious SSL certificate detected (Likely Shylock/URLzone/Gootkit/Zeus Panda C2)"; flow:established,from_server; tls.cert_subject; content:"O=MyCompany Ltd."; reference:url,sslbl.abuse.ch; classtype:domain-c2; sid:2015560; rev:9; metadata:attack_target Client_and_Server, created_at 2012_08_02, deployment Perimeter, malware_family URLZone, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Banking_Trojan, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_18, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)