ET MALWARE [PTsecurity] Kuriyama Loader Checkin

Query · suricata

flow:established, to_server;
threshold:type both, track by_src, count 2, seconds 60;
http.method;
content:"GET";
http.uri;
content:"?hwid=";
content:"&group="; fast_pattern;
content:"&os=";
content:"&cpu=";
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET MALWARE [PTsecurity] Kuriyama Loader 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 [PTsecurity] Kuriyama Loader Checkin";
    flow:established, to_server;
    threshold:type both, track by_src, count 2, seconds 60;
    http.method;
    content:"GET";
    http.uri;
    content:"?hwid=";
    content:"&group="; fast_pattern;
    content:"&os=";
    content:"&cpu=";
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:url,darkwebs.ws/threads/41806/;
    reference:md5,e18c73ec38cbdd0bb0c66f360183e6d9;
    classtype:command-and-control;
    sid:2025253; rev:6;
    metadata:created_at 2018_01_26, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_19;
)

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