Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ABUSE.CH SSL Blacklist Malicious SSL certificate detected (Shifu)"; flow:established,to_client; tls.cert_subject; content:"CN=nyctradersacademy.com"; reference:md5,cb690af981b61aa4779624db5d2489e1; reference:md5,040ac83b30a9bd111d06d238f39593fb; classtype:domain-c2; sid:2022056; rev:3; metadata:attack_target Client_and_Server, created_at 2015_11_10, 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 TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;)