alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Nimbus Manticore Domain (oneglobalvisa .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".oneglobalvisa.com"; endswith; fast_pattern; reference:url,research.checkpoint.com/2025/nimbus-manticore-deploys-new-malware-targeting-europe/; classtype:domain-c2; sid:2064970; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2025_09_29, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Nimbus_Manticore, updated_at 2025_09_29, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)