Rule History

alert dns $HOME_NET any -> any any (msg:"ET INFO VNT VPN Domain in DNS Lookup (vnt .8443 .eu .org)"; dns.query; bsize:15; content:"vnt.8443.eu.org"; nocase; reference:url,rustvnt.com; reference:url,github.com/vnt-dev/vnt; classtype:misc-activity; sid:2065346; rev:1; metadata:attack_target Client_and_Server, created_at 2025_10_23, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, tag VNT, tag VPN, updated_at 2025_10_23, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1572, mitre_technique_name Protocol_Tunneling;)