alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO External IP Lookup via Country .is"; flow:established,to_server; urilen:1; http.method; content:"GET"; http.uri; content:"/"; http.host; bsize:14; content:"api.country.is"; fast_pattern; http.content_len; bsize:1; content:"0"; classtype:misc-activity; sid:2061045; rev:1; metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_03_25, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Informational, updated_at 2025_03_25, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery; target:src_ip;)