ET MALWARE Possible Stitur Secondary Download

Query · suricata

flow:established,from_server;
http.header;
content:".file|0d 0a|"; fast_pattern;
content:"Content-Description|3a 20|File Transfer|0d 0a|";
content:"Content-Transfer-Encoding|3a 20|binary|0d 0a|";
pcre:"/filename=[a-f0-9]{13}\.file\r\n/";
Raw source ET MALWARE Possible Stitur Secondary Download · 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 Stitur Secondary Download";
    flow:established,from_server;
    http.header;
    content:".file|0d 0a|"; fast_pattern;
    content:"Content-Description|3a 20|File Transfer|0d 0a|";
    content:"Content-Transfer-Encoding|3a 20|binary|0d 0a|";
    pcre:"/filename=[a-f0-9]{13}\.file\r\n/";
    classtype:trojan-activity;
    sid:2017700; rev:5;
    metadata:created_at 2013_11_09, confidence Medium, signature_severity Major, updated_at 2020_09_22;
)

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