Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Lumma Stealer Related Domain (flexibleagttypoceo .shop in TLS SNI)"; flow:established,to_server; tls.sni; bsize:23; content:"flexibleagttypoceo.shop"; fast_pattern; reference:md5,33289bd5de49838777b6fbe8374099e1; classtype:domain-c2; sid:2050779; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_02_09, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_09, reviewed_at 2024_03_11, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)