Versions (4)
Version DetailsCurrent
Rev: 1 • Feb 29, 2024, 12:00 PMET INFO External IP Lookup Service Domain (reallyfreegeoip .org) in TLS SNI
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO External IP Lookup Service Domain (reallyfreegeoip .org) in TLS SNI"; flow:established,to_server; tls.sni; dotprefix; content:".reallyfreegeoip.org"; endswith; fast_pattern; classtype:misc-activity; sid:2051431; rev:1; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2024_02_29, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_02_29, reviewed_at 2024_10_03, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery;)
Feb 29, 2024, 12:00 PM
Feb 29, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Feb 16, 2026, 10:35 PM
rules/emerging-info.rules