Versions (4)
Version DetailsCurrent
Rev: 2 • Jan 26, 2024, 12:00 PMET EXPLOIT_KIT VexTrio Domain in TLS SNI (lookup-domain .com)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT VexTrio Domain in TLS SNI (lookup-domain .com)"; flow:established,to_server; tls.sni; dotprefix; content:".lookup-domain.com"; endswith; fast_pattern; reference:url,blogs.infoblox.com/cyber-threat-intelligence/cybercrime-central-vextrio-operates-massive-criminal-affiliate-program; reference:url,infosec.exchange/@rmceoin/111823897938910233; classtype:exploit-kit; sid:2050516; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2024_01_26, deployment Perimeter, deprecation_reason Relevance, performance_impact Low, confidence High, signature_severity Minor, tag Exploit_Kit, tag VexTrio, tag compromised_website, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_26, reviewed_at 2024_03_26;)
Jan 26, 2024, 12:00 PM
Mar 26, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 14, 2025, 9:34 PM
rules/emerging-exploit_kit.rules