alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING 7-zip Executable Requested (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/a/7z"; fast_pattern; startswith; content:".exe"; endswith; http.host; content:"www.7-zip.org"; bsize:13; classtype:bad-unknown; sid:2039813; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_11_21, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_11_21; target:src_ip;)