alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO External IP Address Lookup via vtransmit .com"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/getip.php"; startswith; endswith; http.host; content:"vtransmit.com"; startswith; fast_pattern; endswith; classtype:external-ip-check; sid:2026761; rev:5; 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 2024_04_13;)