alert dns $HOME_NET any -> any any (msg:"ET INFO URL Shortener Service Domain in DNS Lookup (vroops .com)"; dns.query; bsize:10; content:"vroops.com"; nocase; classtype:misc-activity; sid:2064263; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_09_02, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag URL_Shortener, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_09_03, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1189, mitre_technique_name Drive_by_Compromise;)