ET INFO Observed External IP Lookup Domain (get-my-ip-v6 .ddns .softether-network .net in TLS SNI)

Query · suricata

flow:established,to_server;
tls.sni; bsize:39;
content:"get-my-ip-v6.ddns.softether-network.net"; fast_pattern;
Raw source ET INFO Observed External IP Lookup Domain (get-my-ip-v6 .ddns .softether-network .net 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 Observed External IP Lookup Domain (get-my-ip-v6 .ddns .softether-network .net in TLS SNI)";
    flow:established,to_server;
    tls.sni; bsize:39;
    content:"get-my-ip-v6.ddns.softether-network.net"; fast_pattern;
    classtype:misc-activity;
    sid:2068197; rev:1;
    metadata:affected_product Any, attack_target Client_and_Server, created_at 2026_03_13, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2026_03_13, mitre_tactic_id TA0043, mitre_tactic_name Reconnaissance, mitre_technique_id T1590, mitre_technique_name Gather_Victim_Network_Information;
)

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