Versions (4)
Version DetailsCurrent
Rev: 1 • Dec 1, 2023, 12:00 PMET MALWARE Observed Malicious Domain in TLS SNI (2311forget .online)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Malicious Domain in TLS SNI (2311forget .online)"; flow:established,to_server; tls.sni; dotprefix; content:".2311forget.online"; endswith; fast_pattern; reference:md5,3061050ea5532508e71b7ab663549ff4; classtype:trojan-activity; sid:2049431; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_12_01, deployment Perimeter, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
Dec 1, 2023, 12:00 PM
Dec 4, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 18, 2025, 8:35 PM
rules/emerging-malware.rules