Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Lazarus APT Related Domain (designautocad .org in TLS SNI)"; flow:established,to_server; tls.sni; content:"designautocad.org"; bsize:17; fast_pattern; reference:url,twitter.com/s1ckb017/status/1489591023030448129; reference:md5,16b9ced590e449446f12c733f3e0b808; classtype:domain-c2; sid:2035115; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_02_07, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_07, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)