Versions (4)
Version DetailsCurrent
Rev: 1 • Nov 22, 2022, 12:00 PMET MALWARE Observed TA453 Domain (washingtonlnstitute .org in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed TA453 Domain (washingtonlnstitute .org in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".washingtonlnstitute.org"; endswith; fast_pattern; classtype:trojan-activity; sid:2039820; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_11_22, deployment Perimeter, malware_family TA453, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_11_22, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
Nov 22, 2022, 12:00 PM
Nov 22, 2022, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 27, 2025, 9:35 PM
rules/emerging-malware.rules