alert dns $HOME_NET any -> any any (msg:"ET PHISHING UNK_DeadDrop Domain in DNS Lookup (mailtrixauvex .ink)"; dns.query; dotprefix; content:".mailtrixauvex.ink"; nocase; endswith; classtype:social-engineering; sid:2069511; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2026_06_01, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, tag UNK_DeadDrop, updated_at 2026_06_01, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)