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Rev: 1 • Aug 23, 2024, 12:00 PMET MALWARE Observed Malicious Domain (libjs .xyz in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Malicious Domain (libjs .xyz in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".libjs.xyz"; endswith; fast_pattern; reference:url,x.com/malwrhunterteam/status/1826882222323794335; classtype:trojan-activity; sid:2055449; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_08_23, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_08_23, reviewed_at 2025_04_15, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
Aug 23, 2024, 12:00 PM
Aug 23, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Jul 29, 2025, 10:34 PM
rules/emerging-malware.rules