Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Win32/Lumma Stealer Related Domain (record-envyp .sbs in TLS SNI)"; flow:established,to_server; tls.sni; bsize:16; content:"record-envyp.sbs"; fast_pattern; reference:md5,bed38a4c21d98f5c188b7b7b3a1848ef; classtype:domain-c2; sid:2058696; rev:3; metadata:tls_state TLSEncrypt, created_at 2024_12_30, deployment Perimeter, malware_family Lumma_Stealer, confidence High, signature_severity Critical, updated_at 2024_12_31, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)