ET WEB_CLIENT Generic Webshell Password Prompt Accessed on External Compromised Server

Query · suricata

flow:established,to_client;
file.data;
content:"form method=post>Password<br><input type=password name=pass style='background-color:whitesmoke|3b|";
content:"type=submit name='watching' value='submit' style='border|3a|none|3b|background-color|3a|#"; fast_pattern;
Raw source ET WEB_CLIENT Generic Webshell Password Prompt Accessed on External Compromised Server · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http any any -> $HOME_NET any (
    msg:"ET WEB_CLIENT Generic Webshell Password Prompt Accessed on External Compromised Server";
    flow:established,to_client;
    file.data;
    content:"form method=post>Password<br><input type=password name=pass style='background-color:whitesmoke|3b|";
    content:"type=submit name='watching' value='submit' style='border|3a|none|3b|background-color|3a|#"; fast_pattern;
    classtype:web-application-attack;
    sid:2030537; rev:3;
    metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2020_07_16, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_08_13;
)

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