ET MALWARE Generic - POST To .php w/Extended ASCII Characters

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Generic - POST To .php w/Extended ASCII Characters";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php";
    http.user_agent;
    content:"|20|MSIE|20|"; fast_pattern;
    http.request_body;
    pcre:"/[\x80-\xff]/";
    http.content_type;
    content:"www-form-urlencoded";
    http.header_names;
    content:!"Referer";
    http.host;
    content:!".webex.com"; endswith;
    classtype:trojan-activity;
    sid:2017259; rev:16;
    metadata:created_at 2013_07_31, performance_impact Significant, confidence Medium, signature_severity Major, updated_at 2024_04_25;
)