ET MALWARE PHPs Labyrinth Backdoor Stage1 CnC Activity

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".php?host="; fast_pattern;
content:"&password="; distance:0;
pcre:"/\.php\?host=[^&]+&password=[a-f0-9]{32}$/";
Raw source ET MALWARE PHPs Labyrinth Backdoor Stage1 CnC Activity · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE PHPs Labyrinth Backdoor Stage1 CnC Activity";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php?host="; fast_pattern;
    content:"&password="; distance:0;
    pcre:"/\.php\?host=[^&]+&password=[a-f0-9]{32}$/";
    reference:url,blog.prevailion.com/2020/02/phps-labyrinth-weaponized-wordpress.html;
    classtype:command-and-control;
    sid:2029499; rev:3;
    metadata:affected_product Wordpress_Plugins, attack_target Web_Server, created_at 2020_02_19, deployment Perimeter, deployment Datacenter, deployment SSLDecrypt, confidence High, signature_severity Major, updated_at 2020_12_10;
)

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