ET MALWARE W32/ZxShell Server Checkin Response

Query · suricata

flow:established,from_server;
dsize:16;
content:"|85 19 00 00 25 04 00 00|"; depth:8;
Raw source ET MALWARE W32/ZxShell Server Checkin Response · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE W32/ZxShell Server Checkin Response";
    flow:established,from_server;
    dsize:16;
    content:"|85 19 00 00 25 04 00 00|"; depth:8;
    reference:url,blogs.cisco.com/talos/opening-zxshell/;
    classtype:command-and-control;
    sid:2019587; rev:1;
    metadata:created_at 2014_10_29, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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