ET WEB_SERVER HTTP POST Generic eval of base64_decode

Query · suricata

flow:established,to_server;
content:"eval"; nocase;
pcre:"/^[\r\n\s]*?\x28[\r\n\s]*?base64_decode/Rsi";
http.request_body;
content:"base64_decode"; nocase; fast_pattern;
Raw source ET WEB_SERVER HTTP POST Generic eval of base64_decode · 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 -> $HTTP_SERVERS any (
    msg:"ET WEB_SERVER HTTP POST Generic eval of base64_decode";
    flow:established,to_server;
    content:"eval"; nocase;
    pcre:"/^[\r\n\s]*?\x28[\r\n\s]*?base64_decode/Rsi";
    http.request_body;
    content:"base64_decode"; nocase; fast_pattern;
    classtype:trojan-activity;
    sid:2019182; rev:4;
    metadata:created_at 2014_09_16, confidence Medium, signature_severity Major, updated_at 2020_09_25;
)

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