ET POLICY Windows 98 User-Agent Detected - Possible Malware or Non-Updated System

Query · suricata

flow:established,to_server;
http.header;
content:!"X-Trend-ActiveUpdate";
content:!"HTTrack";
http.user_agent;
content:"Windows 98";
Raw source ET POLICY Windows 98 User-Agent Detected - Possible Malware or Non-Updated System · 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 POLICY Windows 98 User-Agent Detected - Possible Malware or Non-Updated System";
    flow:established,to_server;
    http.header;
    content:!"X-Trend-ActiveUpdate";
    content:!"HTTrack";
    http.user_agent;
    content:"Windows 98";
    classtype:policy-violation;
    sid:2007695; rev:22;
    metadata:created_at 2010_07_30, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_07_29;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.