alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY External IP Lookup Domain (ifconfig .me)"; flow:established,to_server; http.method; content:"GET"; http.host; content:"ifconfig.me"; depth:11; endswith; fast_pattern; reference:md5,52ba2e1f51d16394bf109b42c1166b74; classtype:external-ip-check; sid:2026718; rev:6; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_12_10, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag IP_address_lookup_website, updated_at 2024_09_19, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery;)