alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (Fullz House CC Skimmer)"; flow:established,to_client; tls.cert_subject; content:"CN=google-assistant.com"; bsize:23; fast_pattern; reference:url,blog.malwarebytes.com/malwarebytes-news/2020/10/mobile-network-operator-falls-into-the-hands-of-fullz-house-criminal-group/; classtype:domain-c2; sid:2030974; rev:2; metadata:affected_product Web_Browsers, attack_target Client_and_Server, created_at 2020_10_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag CardSkimmer, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_12, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)