alert dns $HOME_NET any -> any any (msg:"ET INFO External IP Lookup Domain (ipify .org) in DNS Lookup"; dns.query; dotprefix; content:".ipify.org"; nocase; endswith; classtype:misc-activity; sid:2047702; rev:1; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2023_08_22, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag External_IP_Lookup, updated_at 2023_08_22, reviewed_at 2023_10_06, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery;)