Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Lumma Stealer Related Domain (thidrsorebahsufll .shop  in TLS SNI)"; flow:established,to_server; tls.sni; bsize:22; content:"thidrsorebahsufll.shop"; fast_pattern; reference:md5,4c60e6dd8d13ae2b13bf8def33e46d5e; classtype:domain-c2; sid:2053728; rev:3; metadata:tls_state TLSEncrypt, created_at 2024_06_18, deployment Perimeter, malware_family Lumma_Stealer, performance_impact Low, confidence High, signature_severity Major, updated_at 2025_08_05, reviewed_at 2025_08_05, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)