alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED ABUSE.CH SSL Blacklist Malicious SSL certificate detected (HTTPBrowser CnC)"; flow:established,from_server; content:"|16|"; content:"|0b|"; within:8; content:"|09 00 97 d3 99 b4 6f 4e 77 43|"; within:35; content:"|55 04 0A|"; distance:0; content:"|18|Internet Widgits Pty Ltd"; distance:1; within:25; reference:url,sslbl.abuse.ch; classtype:domain-c2; sid:2021428; rev:4; metadata:attack_target Client_and_Server, created_at 2015_07_16, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_01_15, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;)