ET MALWARE Qbot Related Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:!"|2e|";
http.accept;
content:"application/x-shockwave-flash|2c|"; startswith; fast_pattern;
http.content_type;
content:"application/x-www-form-urlencoded"; bsize:33;
http.header_names;
content:!"Referer";
http.content_len;
byte_test:0,<=,400,0,string,dec;
http.request_body;
content:"="; offset:4; depth:9;
target:src_ip;
Raw source ET MALWARE Qbot Related Activity (POST) · 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 Qbot Related Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:!"|2e|";
    http.accept;
    content:"application/x-shockwave-flash|2c|"; startswith; fast_pattern;
    http.content_type;
    content:"application/x-www-form-urlencoded"; bsize:33;
    http.header_names;
    content:!"Referer";
    http.content_len;
    byte_test:0,<=,400,0,string,dec;
    http.request_body;
    content:"="; offset:4; depth:9;
    reference:md5,eab19c465ed16289519fddcc0befe7db;
    classtype:trojan-activity;
    sid:2049717; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_12_18, deployment Perimeter, deployment SSLDecrypt, performance_impact Moderate, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_18;
    target:src_ip;
)

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