Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed APT Related CR4T Dropper Domain (commonline .space in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".commonline.space"; endswith; fast_pattern; reference:url,securelist.com/dunequixote/112425/; reference:md5,5a04d9067b8cb6bcb916b59dcf53bed3; classtype:trojan-activity; sid:2052238; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_04_23, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_23, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)