alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO External IP Lookup via FreeIpAPI"; flow:established,to_server; http.method; content:"GET"; http.uri; bsize:<11; content:"/api/json"; startswith; http.host; content:"freeipapi.com"; endswith; fast_pattern; classtype:misc-activity; sid:2060212; rev:1; metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_02_19, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Informational, tag IP_address_lookup_website, updated_at 2025_02_19, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery;)