ET MALWARE Suspected Glupteba Download

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"|25|";
content:"-rtmd-"; nocase; fast_pattern;
content:".exe"; bsize:>50;
http.header_names;
content:!"Referer";
Raw source ET MALWARE Suspected Glupteba Download · 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 Suspected Glupteba Download";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"|25|";
    content:"-rtmd-"; nocase; fast_pattern;
    content:".exe"; bsize:>50;
    http.header_names;
    content:!"Referer";
    reference:url,news.sophos.com/wp-content/uploads/2020/06/glupteba_final-1.pdf;
    reference:md5,e39362df0a751289b6f65b3448ae38f4;
    classtype:trojan-activity;
    sid:2030435; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2020_07_01, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_07_01;
)

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