ET MALWARE Comfoo Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
pcre:"/^\/[a-zA-Z0-9\+\/]+={0,2}\/[a-zA-Z0-9\+\/]+={0,2}\d{5}\/\d+\/\d{2}[a-zA-Z0-9\+\/]+={0,2}\/[a-zA-Z0-9\+\/]+={0,2}\d{3}\/$/";
http.user_agent;
content:"|3b|Windows"; nocase;
Raw source ET MALWARE Comfoo Checkin · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Comfoo Checkin";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    pcre:"/^\/[a-zA-Z0-9\+\/]+={0,2}\/[a-zA-Z0-9\+\/]+={0,2}\d{5}\/\d+\/\d{2}[a-zA-Z0-9\+\/]+={0,2}\/[a-zA-Z0-9\+\/]+={0,2}\d{3}\/$/";
    http.user_agent;
    content:"|3b|Windows"; nocase;
    reference:url,www.secureworks.com/cyber-threat-intelligence/threats/secrets-of-the-comfoo-masters/;
    classtype:command-and-control;
    sid:2017262; rev:6;
    metadata:created_at 2013_08_01, signature_severity Major, updated_at 2020_04_24;
)

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