ET MALWARE Win32/Backdoor.Dripion External IP Check

Query · suricata

flow:established,to_server;
urilen:1;
http.method;
content:"GET";
http.uri;
content:"/";
http.user_agent;
content:"Mozilla/4.0"; bsize:11;
http.host;
content:"www.dawhois.com"; fast_pattern; bsize:15;
http.content_type;
content:"application/x-www-form-urlencoded"; bsize:33;
Raw source ET MALWARE Win32/Backdoor.Dripion External IP Check · 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/Backdoor.Dripion External IP Check";
    flow:established,to_server;
    urilen:1;
    http.method;
    content:"GET";
    http.uri;
    content:"/";
    http.user_agent;
    content:"Mozilla/4.0"; bsize:11;
    http.host;
    content:"www.dawhois.com"; fast_pattern; bsize:15;
    http.content_type;
    content:"application/x-www-form-urlencoded"; bsize:33;
    reference:md5,e7205c0b80035b629d80b5e7aeff7b0e;
    reference:url,symantec.com/connect/blogs/taiwan-targeted-new-cyberespionage-back-door-trojan;
    classtype:external-ip-check;
    sid:2022688; rev:4;
    metadata:created_at 2016_03_30, malware_family Win32_Backdoor_Dripion, confidence High, signature_severity Major, updated_at 2020_10_06;
)

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