Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Lumma Stealer Related Domain (decorousnumerousieo .shop in TLS SNI)"; flow:established,to_server; tls.sni; bsize:24; content:"decorousnumerousieo.shop"; fast_pattern; reference:md5,e9ded16b5ba05aaf1918fa4e1041cdd2; classtype:domain-c2; sid:2050729; rev:2; metadata:attack_target Client_Endpoint, created_at 2024_02_06, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_07, reviewed_at 2024_03_07, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)