ET USER_AGENTS Suspicious Custom Firefox UA Observed (Firefox...)

Query · suricata

flow:established,to_server;
http.user_agent;
content:"Firefox..."; depth:10; fast_pattern; endswith;
Raw source ET USER_AGENTS Suspicious Custom Firefox UA Observed (Firefox...) · Suricata
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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 Custom Firefox UA Observed (Firefox...)";
    flow:established,to_server;
    http.user_agent;
    content:"Firefox..."; depth:10; fast_pattern; endswith;
    classtype:bad-unknown;
    sid:2027686; rev:3;
    metadata:created_at 2019_07_04, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_17;
)

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