ET MALWARE Win32/Backdoor.Dripion HTTP CnC Checkin

Query · suricata

flow:established,to_server;
urilen:1;
http.method;
content:"GET";
http.uri;
content:"/";
http.header;
content:"User-Agent|3a 20|Mozilla/4.0|0d 0a|"; fast_pattern;
http.request_body;
content:"|40 24|"; depth:2;
pcre:"/^\x40\x24[^\x20-\x7e\r\n]+$/s";
http.content_type; bsize:33;
content:"application/x-www-form-urlencoded";
Raw source ET MALWARE Win32/Backdoor.Dripion HTTP CnC Checkin · Suricata
Esc
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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Backdoor.Dripion HTTP CnC Checkin";
    flow:established,to_server;
    urilen:1;
    http.method;
    content:"GET";
    http.uri;
    content:"/";
    http.header;
    content:"User-Agent|3a 20|Mozilla/4.0|0d 0a|"; fast_pattern;
    http.request_body;
    content:"|40 24|"; depth:2;
    pcre:"/^\x40\x24[^\x20-\x7e\r\n]+$/s";
    http.content_type; bsize:33;
    content:"application/x-www-form-urlencoded";
    reference:md5,e7205c0b80035b629d80b5e7aeff7b0e;
    reference:url,symantec.com/connect/blogs/taiwan-targeted-new-cyberespionage-back-door-trojan;
    classtype:command-and-control;
    sid:2022689; rev:5;
    metadata:created_at 2016_03_30, malware_family Win32_Backdoor_Dripion, signature_severity Major, updated_at 2024_03_25;
)

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