ET MALWARE Brontok User-Agent Detected (Rivest)

Query · suricata

flow:established,to_server;
http.user_agent;
content:"Rivest"; depth:6; endswith; nocase;
Raw source ET MALWARE Brontok User-Agent Detected (Rivest) · 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 MALWARE Brontok User-Agent Detected (Rivest)";
    flow:established,to_server;
    http.user_agent;
    content:"Rivest"; depth:6; endswith; nocase;
    reference:md5,c83b55ab56f3deb60858cb25d6ded8c4;
    classtype:trojan-activity;
    sid:2020179; rev:4;
    metadata:created_at 2015_01_13, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_14;
)

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