alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY External IP Address Lookup via vtransmit .com"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/getip.php"; depth:10; endswith; http.host; content:"vtransmit.com"; depth:13; fast_pattern; endswith; classtype:external-ip-check; sid:2026761; rev:4; metadata:attack_target Client_and_Server, created_at 2019_01_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag IP_address_lookup_website, updated_at 2020_09_16;)