Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Lumma Stealer Related Domain (lighterepisodeheighte .funs in TLS SNI)"; flow:established,to_server; tls.sni; bsize:26; content:"lighterepisodeheighte.funs"; fast_pattern; reference:md5,ec15ec4a99be8d69ffa564b3f19de02e; classtype:domain-c2; sid:2051553; rev:2; metadata:attack_target Client_Endpoint, created_at 2024_03_08, deployment Perimeter, deprecation_reason Age, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_08, reviewed_at 2024_04_08, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)