ET WEB_SPECIFIC_APPS FancyBox Remote Code Inclusion POST Request

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS FancyBox Remote Code Inclusion POST Request";
    flow:to_server,established;
    http.method;
    content:"POST";
    http.uri;
    content:"/admin-post.php?page=fancybox-for-wordpress"; fast_pattern;
    http.request_body;
    content:"INPUTBODY|3a|";
    content:"action=update";
    content:"mfbfw";
    content:"extraCalls"; nocase;
    reference:url,blog.sucuri.net/2015/02/zero-day-in-the-fancybox-for-wordpress-plugin.html;
    classtype:attempted-admin;
    sid:2020368; rev:7;
    metadata:created_at 2015_02_05, signature_severity Major, updated_at 2020_09_29, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
)