ET WEB_CLIENT SmailMax PHPMailer Accessed on External Server

Query · suricata

flow:established,to_client;
file.data;
content:"SmailMax SMTP Mailer</title>"; fast_pattern;
content:"SERVER SETUP</font>";
content:"SMTP Login:</font>";
Raw source ET WEB_CLIENT SmailMax PHPMailer Accessed on External 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 SmailMax PHPMailer Accessed on External Server";
    flow:established,to_client;
    file.data;
    content:"SmailMax SMTP Mailer</title>"; fast_pattern;
    content:"SERVER SETUP</font>";
    content:"SMTP Login:</font>";
    classtype:web-application-attack;
    sid:2030227; rev:2;
    metadata:affected_product Any, attack_target Client_Endpoint, created_at 2020_05_28, deployment Perimeter, confidence High, signature_severity Critical, updated_at 2020_08_19;
)

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