ET MALWARE ProxyBox - HTTP CnC - POST 1-letter.php

Query · suricata

flow:established,to_server;
urilen:6;
http.method;
content:"POST";
http.uri;
content:".php";
pcre:"/^\/[a-z]\.php/";
http.user_agent;
content:"Indy Library";
Raw source ET MALWARE ProxyBox - HTTP CnC - POST 1-letter.php · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE ProxyBox - HTTP CnC - POST 1-letter.php";
    flow:established,to_server;
    urilen:6;
    http.method;
    content:"POST";
    http.uri;
    content:".php";
    pcre:"/^\/[a-z]\.php/";
    http.user_agent;
    content:"Indy Library";
    reference:url,www.symantec.com/security_response/writeup.jsp?docid=2012-071005-4515-99&tabid=2;
    classtype:command-and-control;
    sid:2015504; rev:6;
    metadata:created_at 2012_07_21, signature_severity Major, updated_at 2020_10_28;
)

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