alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Transportation Cargo Theft Domain in TLS SNI"; flow:established,to_server; tls.sni; dotprefix; content:".trynode.info"; endswith; fast_pattern; classtype:misc-activity; sid:2069157; rev:1; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2026_05_04, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Transportation_Vertical, updated_at 2026_05_04, mitre_tactic_id TA0037, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)