alert dns $HOME_NET any -> any any (msg:"ET DYN_DNS DYNAMIC_DNS Query to freemyip .com Domain"; dns.query; content:".freemyip.com"; nocase; endswith; classtype:bad-unknown; sid:2033365; rev:3; metadata:attack_target Client_Endpoint, created_at 2021_07_20, deployment Perimeter, former_category INFO, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_06_11;)