ET INFO External IP Lookup Domain (geolocation-db .com) in TLS SNI

Query · suricata

flow:established,to_server;
tls.sni; bsize:18;
content:"geolocation-db.com"; fast_pattern;
Raw source ET INFO External IP Lookup Domain (geolocation-db .com) in TLS SNI · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tls $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET INFO External IP Lookup Domain (geolocation-db .com) in TLS SNI";
    flow:established,to_server;
    tls.sni; bsize:18;
    content:"geolocation-db.com"; fast_pattern;
    reference:url,geolocation-db.com;
    classtype:misc-activity;
    sid:2048378; 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 2023_10_02, mitre_tactic_id TA0007, mitre_tactic_name Discovery, mitre_technique_id T1614, mitre_technique_name System_Location_Discovery;
)

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