ET MALWARE Downeks Checkin

Query · suricata

flow:to_server,established;
urilen:7;
http.method;
content:"GET";
http.uri;
content:"/dw/gtk"; fast_pattern;
http.header;
content:"Host|3a|"; depth:5;
http.header_names;
content:!"Referer|0d 0a|";
content:!"User-Agent|0d 0a|";
Raw source ET MALWARE Downeks Checkin · 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 Downeks Checkin";
    flow:to_server,established;
    urilen:7;
    http.method;
    content:"GET";
    http.uri;
    content:"/dw/gtk"; fast_pattern;
    http.header;
    content:"Host|3a|"; depth:5;
    http.header_names;
    content:!"Referer|0d 0a|";
    content:!"User-Agent|0d 0a|";
    reference:url,pwc.blogs.com/cyber_security_updates/2015/04/attacks-against-israeli-palestinian-interests.html;
    classtype:command-and-control;
    sid:2021028; rev:4;
    metadata:created_at 2015_04_28, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_30;
)

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