alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (Maldoc/Zloader CnC)"; flow:established,to_client; tls.certs; content:"heavenlygem.com"; classtype:domain-c2; sid:2033318; rev:2; metadata:attack_target Client_and_Server, created_at 2021_07_13, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_25, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;)