alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO External IP Lookup Domain (iplogger .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"iplogger.com"; fast_pattern; nocase; classtype:external-ip-check; sid:2047718; rev:6; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_11_01, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_11_26, former_sid 2828488, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery;)