alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Magecart Domain (nuinetec .store in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".nuinetec.store"; endswith; fast_pattern; reference:url,twitter.com/500mk500/status/1787475113178275918; classtype:trojan-activity; sid:2052486; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_05_07, deployment Perimeter, malware_family MageCart, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_05_07, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)