alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed AlfaRedFox RAT SSL Cert"; flow:established,to_client; tls.cert_subject; content:"O=VenomRAT By"; fast_pattern; reference:url,censys.com/blog/asyncrat-family-threat-overview/; classtype:domain-c2; sid:2070108; rev:1; metadata:attack_target Client_and_Server, created_at 2026_06_29, deployment Perimeter, malware_family AlfaRedFoxRAT, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2026_06_29, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)