ET SCAN Suspicious User-Agent inbound (bot)

Query · suricata

flow:established,to_server;
http.user_agent;
content:"bot/"; startswith; nocase;
threshold:type limit, count 3, seconds 300, track by_src;
Raw source ET SCAN Suspicious User-Agent inbound (bot) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET SCAN Suspicious User-Agent inbound (bot)";
    flow:established,to_server;
    http.user_agent;
    content:"bot/"; startswith; nocase;
    threshold:type limit, count 3, seconds 300, track by_src;
    classtype:trojan-activity;
    sid:2008228; rev:12;
    metadata:affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, confidence High, signature_severity Major, tag User_Agent, updated_at 2024_03_12;
)

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