alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL/TLS Certificate (UEFA 2024 Phish)"; flow:established,to_client; tls.cert_subject; content:"uefa.de.com"; fast_pattern; startswith; endswith; classtype:domain-c2; sid:2054253; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_07_04, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_07_04, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing; target:dest_ip;)