ET MALWARE Windows executable base64 encoded in XML

Query · suricata

flow:established,from_server;
file_data;
content:"bin.base64"; nocase;
content:"<file"; nocase;
content:"<stream"; nocase;
content:"<?xml"; nocase;
content:"TVqQA"; fast_pattern;
pcre:"/^[A-Za-z0-9\s/+]{100}/Rs";
Raw source ET MALWARE Windows executable base64 encoded in XML · 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Windows executable base64 encoded in XML";
    flow:established,from_server;
    file_data;
    content:"bin.base64"; nocase;
    content:"<file"; nocase;
    content:"<stream"; nocase;
    content:"<?xml"; nocase;
    content:"TVqQA"; fast_pattern;
    pcre:"/^[A-Za-z0-9\s/+]{100}/Rs";
    classtype:trojan-activity;
    sid:2019716; rev:9;
    metadata:created_at 2014_11_15, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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