ET MALWARE Generic -POST To gate.php w/Extended ASCII Characters (Likely Zeus Derivative)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Generic -POST To gate.php w/Extended ASCII Characters (Likely Zeus Derivative)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/gate.php";
    http.request_body;
    pcre:"/^.{0,3}[\x80-\xff]{1,3}[\x00-\x7f]{1,3}[\x80-\xff]{1,3}[\x80-\xff]{1,3}[\x00-\x7f]{1,3}[\x80-\xff]{1,3}[\x00-\x7f]{1,3}/";
    http.header_names;
    content:!"Referer";
    classtype:bad-unknown;
    sid:2016173; rev:10;
    metadata:created_at 2013_01_08, confidence Medium, signature_severity Major, updated_at 2020_08_17;
)