Versions (4)
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Rev: 1 • May 17, 2024, 12:00 PMET MALWARE Observed Async RAT Related Domain (undjsj .duckdns .org in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Async RAT Related Domain (undjsj .duckdns .org in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".undjsj.duckdns.org"; endswith; fast_pattern; reference:url,twitter.com/karol_paciorek/status/1791056351843500196; classtype:trojan-activity; sid:2052745; rev:1; metadata:created_at 2024_05_17, malware_family AsyncRAT, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_05_17, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
May 17, 2024, 12:00 PM
May 17, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 11, 2025, 10:35 PM
rules/emerging-malware.rules