alert dns $HOME_NET any -> any any (msg:"ET INFO External IP Lookup Domain in DNS Lookup (geolocation-db .com)"; dns.query; bsize:18; content:"geolocation-db.com"; nocase; reference:url,geolocation-db.com; classtype:misc-activity; sid:2048377; rev:1; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2023_10_02, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2023_10_02, reviewed_at 2024_10_02, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery;)