ET MALWARE Win32/Chinad Retrieving Config

Query · suricata

flow:to_server,established;
urilen:22;
http.method;
content:"GET";
http.uri;
content:"/css/bootstrap.min.css"; fast_pattern;
http.header;
pcre:"/^Host\x3a\x20(?:\d{1,3}\.){3}\d{1,3}\r\nCache-Control\x3a\x20no-cache\r\n(?:\r\n)?$/i";
Raw source ET MALWARE Win32/Chinad Retrieving Config · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Chinad Retrieving Config";
    flow:to_server,established;
    urilen:22;
    http.method;
    content:"GET";
    http.uri;
    content:"/css/bootstrap.min.css"; fast_pattern;
    http.header;
    pcre:"/^Host\x3a\x20(?:\d{1,3}\.){3}\d{1,3}\r\nCache-Control\x3a\x20no-cache\r\n(?:\r\n)?$/i";
    reference:url,blog.malwarebytes.org/intelligence/2015/06/unusual-exploit-kit-targets-chinese-users-part-2;
    reference:md5,5a454c795eccf94bf6213fcc4ee65e6d;
    classtype:trojan-activity;
    sid:2021261; rev:5;
    metadata:created_at 2015_06_13, malware_family Win32_Chinad, performance_impact Significant, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_25;
)

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