ET MALWARE Kronos Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/upfornow/connect.php"; fast_pattern;
http.header;
content:"Content-Length|3a 20|";
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET MALWARE Kronos 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 Kronos Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/upfornow/connect.php"; fast_pattern;
    http.header;
    content:"Content-Length|3a 20|";
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:md5,f085395253a40ce8ca077228c2322010;
    reference:url,securityblog.s21sec.com/2014/08/kronos-is-here.html;
    classtype:command-and-control;
    sid:2018891; rev:4;
    metadata:created_at 2014_08_04, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_25;
)

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