ET MALWARE Trojan.Nurjax Retrieving Domains via JS

Query · suricata

flow:established,to_server;
http.uri;
content:".txt?dummy="; fast_pattern;
pcre:"/^\d+$/R";
http.user_agent;
content:"Mozilla"; depth:7;
http.header_names;
content:!"Accept-";
content:!"Referer";
Raw source ET MALWARE Trojan.Nurjax Retrieving Domains via JS · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Trojan.Nurjax Retrieving Domains via JS";
    flow:established,to_server;
    http.uri;
    content:".txt?dummy="; fast_pattern;
    pcre:"/^\d+$/R";
    http.user_agent;
    content:"Mozilla"; depth:7;
    http.header_names;
    content:!"Accept-";
    content:!"Referer";
    reference:md5,1837561f9537d2fcc2b4f0ea6fd3a095;
    classtype:trojan-activity;
    sid:2020031; rev:5;
    metadata:created_at 2014_12_23, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_17;
)

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