ET WEB_SERVER WebShell - Generic - c99shell based POST structure w/multipart

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.request_body;
content:"form-data\; name=|22|a|22|";
content:"form-data\; name=|22|c|22|";
content:"form-data\; name=|22|p1|22|";
Raw source ET WEB_SERVER WebShell - Generic - c99shell based POST structure w/multipart · 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 WEB_SERVER WebShell - Generic - c99shell based POST structure w/multipart";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.request_body;
    content:"form-data\; name=|22|a|22|";
    content:"form-data\; name=|22|c|22|";
    content:"form-data\; name=|22|p1|22|";
    classtype:attempted-user;
    sid:2015920; rev:3;
    metadata:created_at 2012_11_21, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_22;
)

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