ET WEB_CLIENT Generic WSO Webshell Password Prompt Accessed on External Compromised Server

Query · suricata

flow:established,to_client;
file.data;
content:"<form   method=|20 22|post|22 20|action=|20 22 22|> <input type=|22|input|22 20|name =|22|f_pp|22 20|value=|20 22 22|/><input type=|20 22|submit|22 20|value="; fast_pattern;
Raw source ET WEB_CLIENT Generic WSO 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_CLIENT Generic WSO Webshell Password Prompt Accessed on External Compromised Server";
    flow:established,to_client;
    file.data;
    content:"<form   method=|20 22|post|22 20|action=|20 22 22|> <input type=|22|input|22 20|name =|22|f_pp|22 20|value=|20 22 22|/><input type=|20 22|submit|22 20|value="; fast_pattern;
    classtype:web-application-attack;
    sid:2029884; rev:2;
    metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2020_04_13, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_13;
)

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