ET USER_AGENTS suspicious user agent string (CholTBAgent)

Query · suricata

flow:established,to_server;
http.user_agent;
content:"CholTBAgent"; startswith;
threshold:type limit, count 2, seconds 40, track by_src;
Raw source ET USER_AGENTS suspicious user agent string (CholTBAgent) · 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 USER_AGENTS suspicious user agent string (CholTBAgent)";
    flow:established,to_server;
    http.user_agent;
    content:"CholTBAgent"; startswith;
    threshold:type limit, count 2, seconds 40, track by_src;
    classtype:trojan-activity;
    sid:2012757; rev:7;
    metadata:created_at 2011_04_30, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_12;
)

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