Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed TA430/Andariel APT Related Domain (tech .micrsofts .com in TLS SNI)"; flow:established,to_server; tls.sni; bsize:18; content:"tech.micrsofts.com"; fast_pattern; reference:url,blog.talosintelligence.com/lazarus_new_rats_dlang_and_telegram/; classtype:trojan-activity; sid:2049653; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_12_12, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_11, reviewed_at 2024_03_11, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)