alert dns $HOME_NET any -> any any (msg:"ET INFO Tox Chat Domain in DNS Lookup (tox .chat)"; dns.query; dotprefix; content:".tox.chat"; nocase; endswith; reference:url,tox.chat/about.html; classtype:misc-activity; sid:2049167; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_11_13, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_13;)