ET MALWARE Possible Duqu 2.0 Request

Query · suricata

flow:established,to_server;
http.start;
content:"Cookie|3a 20|COUNTRY="; fast_pattern;
http.header_names;
content:!"Accept";
content:!"Referer|0d 0a|";
Raw source ET MALWARE Possible Duqu 2.0 Request · 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 MALWARE Possible Duqu 2.0 Request";
    flow:established,to_server;
    http.start;
    content:"Cookie|3a 20|COUNTRY="; fast_pattern;
    http.header_names;
    content:!"Accept";
    content:!"Referer|0d 0a|";
    reference:url,www.symantec.com/connect/blogs/duqu-20-reemergence-aggressive-cyberespionage-threat;
    classtype:trojan-activity;
    sid:2021247; rev:5;
    metadata:created_at 2015_06_11, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_02;
)

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