alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO HTTP Request to a *.surf domain"; flow:established,to_server; http.host; content:".surf"; fast_pattern; endswith; classtype:bad-unknown; sid:2032985; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_05_18, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_05_18;)