Versions (3)
Version DetailsCurrent
Rev: 2 • Oct 19, 2023, 12:00 PMET MALWARE TA401 Domain in TLS SNI (isabeljwade .icu)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TA401 Domain in TLS SNI (isabeljwade .icu)"; flow:established,to_server; tls.sni; dotprefix; content:".isabeljwade.icu"; endswith; fast_pattern; reference:url,go.recordedfuture.com/hubfs/reports/cta-2023-1019.pdf; classtype:trojan-activity; sid:2048699; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_10_19, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence High, signature_severity Critical, tag TA401, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_06, reviewed_at 2024_03_06, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
Oct 19, 2023, 12:00 PM
Mar 6, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 18, 2025, 8:35 PM
rules/emerging-malware.rules