Versions (3)
Version DetailsCurrent
Rev: 1 • Aug 7, 2023, 12:00 PMET INFO Observed External IP Check Domain (api .ipapi .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed External IP Check Domain (api .ipapi .com in TLS SNI)"; flow:established,to_server; tls.sni; bsize:13; content:"api.ipapi.com"; fast_pattern; classtype:external-ip-check; sid:2047065; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_08_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_07, reviewed_at 2024_03_05;)
Aug 7, 2023, 12:00 PM
Aug 7, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 20, 2025, 9:35 PM
rules/emerging-info.rules