ET MALWARE Possible Derusbi/Winnti Receiving Configuration

Query · suricata

flow:established,from_server;
file_data;
content:"$$$--Hello";
pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})Wrod--\$\$\$/R";
content:"Wrod--$$$"; fast_pattern;
Raw source ET MALWARE Possible Derusbi/Winnti Receiving Configuration · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Possible Derusbi/Winnti Receiving Configuration";
    flow:established,from_server;
    file_data;
    content:"$$$--Hello";
    pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})Wrod--\$\$\$/R";
    content:"Wrod--$$$"; fast_pattern;
    reference:url,blog.airbuscybersecurity.com/post/2015/11/Newcomers-in-the-Derusbi-family;
    classtype:trojan-activity;
    sid:2022269; rev:3;
    metadata:created_at 2015_12_16, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;
)

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