alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO X86_64 File Download Request from IP Address"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".x86_64"; nocase; endswith; http.host; pcre:"/^(?:\d{1,3}\.){3}\d{1,3}/"; classtype:bad-unknown; sid:2025130; rev:3; metadata:attack_target IoT, created_at 2017_12_05, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_16;)