Versions (4)
Version DetailsCurrent
Rev: 3 • May 11, 2022, 12:00 PMET INFO Observed External IP Lookup Domain (ipbase .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed External IP Lookup Domain (ipbase .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"ipbase.com"; bsize:10; fast_pattern; classtype:bad-unknown; sid:2036561; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_05_11, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_11_26, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery;)
May 11, 2022, 12:00 PM
Nov 26, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Feb 16, 2026, 10:35 PM
rules/emerging-info.rules