Versions (4)
Version DetailsCurrent
Rev: 2 • Jul 18, 2024, 12:00 PMET MALWARE Observed Kryptic Fake App Domain (cctvv2023 .9hlw .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Kryptic Fake App Domain (cctvv2023 .9hlw .com in TLS SNI)"; flow:established,to_server; tls.sni; bsize:18; content:"cctvv2023.9hlw.com"; fast_pattern; reference:md5,c8e6cd1fb6f5dfe1ab548024a7f67043; classtype:trojan-activity; sid:2054584; rev:2; metadata:attack_target Client_Endpoint, created_at 2024_07_18, deployment Perimeter, deprecation_reason Age, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_04_15, 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;)
Jul 18, 2024, 12:00 PM
Apr 15, 2025, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 11, 2025, 10:35 PM
rules/emerging-malware.rules