alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Lazarus APT MalDoc DL Domain in TLS SNI"; flow:established,to_server; tls.sni; bsize:9; content:"ne-ba.org"; reference:md5,738ea366df7366a3c55f5673a58bf714; classtype:domain-c2; sid:2030615; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_07_30, deployment Perimeter, malware_family Lazarus, confidence High, signature_severity Major, updated_at 2024_03_24, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)