Rule History

alert tcp $EXTERNAL_NET 443 -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Gozi MITM)"; flow:established,from_server; content:"|55 04 03|"; content:"|0d|dnbcheck.site"; distance:1; within:14; reference:url,sslbl.abuse.ch; classtype:domain-c2; sid:2023286; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2016_09_23, deployment Perimeter, malware_family Gozi, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;)