Versions (3)
Version DetailsCurrent
Rev: 1 • May 6, 2024, 12:00 PMET MALWARE Observed APT42/TA453 Related Domain (short-urling .live in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed APT42/TA453 Related Domain (short-urling .live in TLS SNI)"; flow:established,to_server; tls.sni; bsize:17; content:"short-urling.live"; fast_pattern; reference:url,www.validin.com/blog/expanding-apt42-intelligence-with-validin/; classtype:domain-c2; sid:2052437; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_05_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_05_06, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
May 6, 2024, 12:00 PM
May 6, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 11, 2025, 10:35 PM
rules/emerging-malware.rules