Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (AZORult CnC Server) 2019-10-08"; flow:established,to_client; tls.cert_subject; bsize:28; content:"CN=cloudcitytechnologies.com"; reference:md5,9a23881abe27dc70ca42597a1e1de354; classtype:domain-c2; sid:2028894; rev:2; metadata:attack_target Client_and_Server, created_at 2019_10_22, deployment Perimeter, malware_family AZORult, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_22, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)