alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Dyre CnC)"; flow:established,to_client; tls.cert_serial; content:"00:86:C5:19:74:50:39:69:7A"; tls.cert_issuer; content:"O=Internet Widgits Pty Ltd"; fast_pattern; reference:url,sslbl.abuse.ch; classtype:domain-c2; sid:2020372; rev:5; metadata:attack_target Client_and_Server, created_at 2015_02_06, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2024_03_26, reviewed_at 2024_03_26, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)