ET MALWARE Windows executable base64 encoded

Query · suricata

flow:established,from_server;
file_data;
content:"TVqQA";
pcre:"/^[A-Za-z0-9]{3}(?:[A-Za-z0-9+/]{4}|\s){100}/Rs";
pcre:"/[^A-Za-z0-9+/]TVqQA/";
Raw source ET MALWARE Windows executable base64 encoded · 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 Windows executable base64 encoded";
    flow:established,from_server;
    file_data;
    content:"TVqQA";
    pcre:"/^[A-Za-z0-9]{3}(?:[A-Za-z0-9+/]{4}|\s){100}/Rs";
    pcre:"/[^A-Za-z0-9+/]TVqQA/";
    reference:md5,49aca228674651cba776be727bdb7e60;
    classtype:trojan-activity;
    sid:2018856; rev:12;
    metadata:created_at 2014_07_31, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_19;
)

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