alert dns $HOME_NET any -> any any (msg:"ET HUNTING [TW] Internet Computer Domain Observed"; dns.query; content:".ic0.app"; endswith; reference:url,internetcomputer.org; classtype:misc-activity; sid:2036464; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_05_05, deployment Perimeter, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_05_05;)