ET MALWARE Possible WEBC2-GREENCAT Response - Embedded CnC APT1 Related

Query · suricata

flow:established,from_server;
file_data;
content:"<!--|0d 0a|<img border=";
pcre:"/^[0-4]\s*src=\x22[^\x22]+\x22\swidth=\d+\sheight=\d+>\r\n-->/R";
Raw source ET MALWARE Possible WEBC2-GREENCAT Response - Embedded CnC APT1 Related · 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 WEBC2-GREENCAT Response - Embedded CnC APT1 Related";
    flow:established,from_server;
    file_data;
    content:"<!--|0d 0a|<img border=";
    pcre:"/^[0-4]\s*src=\x22[^\x22]+\x22\swidth=\d+\sheight=\d+>\r\n-->/R";
    reference:url,www.mandiant.com/apt1;
    reference:md5,b5e9ce72771217680efaeecfafe3da3f;
    classtype:targeted-activity;
    sid:2016455; rev:3;
    metadata:created_at 2013_02_22, confidence Medium, signature_severity Major, updated_at 2019_07_26;
)

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