alert dns $HOME_NET any -> any any (msg:"🐾 - 👁 DNS request 🌐 to .biz 💲 extension"; flow:to_server, stateless; dns.query; content:".biz"; nocase; endswith; classtype:bad-unknown; sid:3300995; rev:2; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2021_10_06, deployment Perimeter, former_category INFO, signature_severity Major, updated_at 2021_10_29;)