ET HUNTING Possible Fake Nintendo User-Agent Observed

Query · suricata

flow:established,to_server;
http.user_agent;
content:"|20 28|Nintendo|20|";
content:"|3b 20|U|3b 20 3b 20|"; distance:0; fast_pattern;
content:"en|29|"; distance:0;
Raw source ET HUNTING Possible Fake Nintendo User-Agent Observed · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET HUNTING Possible Fake Nintendo User-Agent Observed";
    flow:established,to_server;
    http.user_agent;
    content:"|20 28|Nintendo|20|";
    content:"|3b 20|U|3b 20 3b 20|"; distance:0; fast_pattern;
    content:"en|29|"; distance:0;
    reference:url,en-americas-support.nintendo.com/app/answers/detail/a_id/13802/~/nintendo-3ds-internet-browser-specs;
    classtype:misc-activity;
    sid:2052806; rev:1;
    metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_05_21, deployment Perimeter, deployment SSLDecrypt, confidence Low, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_05_21;
)

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