ET WEB_SERVER WEBSHELL K-Shell/ZHC Shell 1.0/Aspx Shell Backdoor NetCat_Listener

Query · suricata

flow:established,from_server;
file_data;
content:"Silentz's Tricks:";
content:"action=cmd2";
content:"Start NC";
Raw source ET WEB_SERVER WEBSHELL K-Shell/ZHC Shell 1.0/Aspx Shell Backdoor NetCat_Listener · 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 http $HTTP_SERVERS any -> $EXTERNAL_NET any (
    msg:"ET WEB_SERVER WEBSHELL K-Shell/ZHC Shell 1.0/Aspx Shell Backdoor NetCat_Listener";
    flow:established,from_server;
    file_data;
    content:"Silentz's Tricks:";
    content:"action=cmd2";
    content:"Start NC";
    reference:url,www.fidelissecurity.com/webfm_send/377;
    reference:url,pastebin.com/XAG1Hnfd;
    classtype:web-application-attack;
    sid:2018369; rev:2;
    metadata:created_at 2014_04_07, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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