alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed TraderTraitor Domain (nomadpkg .com in TLS SNI)"; flow:established,to_server; tls.sni; bsize:12; content:"nomadpkg.com"; fast_pattern; reference:url,www.sentinelone.com/labs/jumpcloud-intrusion-attacker-infrastructure-links-compromise-to-north-korean-apt-activity/; classtype:trojan-activity; sid:2046945; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_07_26, deployment Perimeter, deprecation_reason Relevance, confidence High, signature_severity Major, tag TraderTraitor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_05_08, reviewed_at 2024_05_08, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)