alert dns $HOME_NET any -> any any (msg:"ET INFO QR Code Generator Domain in DNS Lookup (qrfy .io)"; dns.query; dotprefix; content:".qrfy.io"; nocase; endswith; reference:url,qrfy.io/; classtype:misc-activity; sid:2053695; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_06_14, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_06_14, reviewed_at 2024_10_14;)