alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Terse Request for Zip File (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".zip"; endswith; fast_pattern; http.header_names; bsize:22; content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; classtype:bad-unknown; sid:2044121; rev:3; metadata:attack_target Client_Endpoint, created_at 2023_02_06, deployment Perimeter, performance_impact Significant, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_03;)