Summary of repair methods for Trojans hanging on PHP websites, summary of Trojans hanging on PHP_PHP tutorial

Summary of repair methods for PHP websites with Trojans, summary of PHP Trojans

In Linux, we can use commands to search for Trojan files, go to the code installation directory and execute the following command

The code is as follows Copy the code
find ./ -iname "*.php" | xargs grep -H -n "eval(base64_decode"

Nearly 100 results were found. This list of results is very important. Trojans are all in it. You need to open the files one by one to verify whether they are Trojans. If so, delete them immediately

Finally, 10 Trojan files were found, stored in various directories, all of which are PHP webshells with complete functions and encoded in base64

If you are looking for a directory in Windows, just use Windows file search. You can search for eval or recently modified files. Then if it is dedecms, we need to check the latest dedecms vulnerability and then patch it.

Here is a PHP Trojan search tool, which can be placed directly in the root directory of your site

The code is as follows Copy the code

/**************PHP Web Trojan Scanner***********************/

/* [+] Author: alibaba */

/* [+] QQ: 1499281192 * www.111cn.net/

/* [+] MSN: weeming21@hotmail.com */

/* [+] First published: t00ls.net, please indicate t00ls when reprinting */

/* [+] Version: v1.0 */

/* [+] Function: web version php Trojan scanning tool*/

/* [+] Note: The scanned files are not necessarily backdoors, */

/* Please judge, review and compare the original documents by yourself. */

/* If you are not sure whether the scanned file is a backdoor, */

/* You are welcome to send this file to me for analysis. */

/*******************************************************/

ob_start();

set_time_limit(0);

$username = "t00ls"; //Set username

$password = "t00ls"; //Set password

$md5 = md5(md5($username).md5($password));

$version = "PHP Web Trojan Scanner v1.0";

PHP Web Trojan Scanner

$realpath = realpath('./');

$selfpath = $_SERVER['PHP_SELF'];

$selfpath = substr($selfpath, 0, strrpos($selfpath,'/'));

define('REALPATH', str_replace('//','/',str_replace('','/',substr($realpath, 0, strlen($realpath) - strlen($selfpath)))) );

define('MYFILE', basename(__FILE__));

define('MYPATH', str_replace('', '/', dirname(__FILE__)).'/');

define('MYFULLPATH', str_replace('', '/', (__FILE__)));

define('HOST', "http://".$_SERVER['HTTP_HOST']);

?>

if(!(isset($_COOKIE['t00ls']) && $_COOKIE['t00ls'] == $md5) && !(isset($_POST['username']) && isset($_POST[' password']) && (md5(md5($_POST['username']).md5($_POST['password']))==$md5)))

{

echo '

Username: Password:

';

}

elseif(isset($_POST['username']) && isset($_POST['password']) && (md5(md5($_POST['username']).md5($_POST['password'] ))==$md5))

{

setcookie("t00ls", $md5, time()+60*60*24*365,"/");

echo "Login successful!";

header( 'refresh: 1; url='.MYFILE.'?action=scan' );

exit();

}

else

{

setcookie("t00ls", $md5, time()+60*60*24*365,"/");

$setting = getSetting();

$action = isset($_GET['action'])?$_GET['action']:"";

if($action=="logout")

{

setcookie ("t00ls", "", time() - 3600);

Header("Location: ".MYFILE);

exit();

}

if($action=="download" && isset($_GET['file']) && trim($_GET['file'])!="")

{

$file = $_GET['file'];

ob_clean();

if (@file_exists($file)) {

header("Content-type: application/octet-stream");

header("Content-Disposition: filename="".basename($file).""");

echo file_get_contents($file);

}

exit();

}

?>

$version"?>

扫描 |

设定 |

登出

if($action=="setting")

{

if(isset($_POST['btnsetting']))

{

$Ssetting = array();

$Ssetting['user']=isset($_POST['checkuser'])?$_POST['checkuser']:"php | php? | phtml";

$Ssetting['all']=isset($_POST['checkall'])&&$_POST['checkall']=="on"?1:0;

$Ssetting['hta']=isset($_POST['checkhta'])&&$_POST['checkhta']=="on"?1:0;

setcookie("t00ls_s", base64_encode(serialize($Ssetting)), time()+60*60*24*365,"/");

echo "设置完成！";

header( 'refresh: 1; url='.MYFILE.'?action=setting' );

exit();

}

?>

扫描设定

文件后缀:
所有文件	>
设置文件	>

}

else

{

$dir = isset($_POST['path'])?$_POST['path']:MYPATH;

$dir = substr($dir,-1)!="/"?$dir."/":$dir;

?>

if(isset($_POST['btnScan']))

{

$start=mktime();

$is_user = array();

$is_ext = "";

$list = "";

 

if(trim($setting['user'])!="")

{

$is_user = explode("|",$setting['user']);

if(count($is_user)>0)

{

foreach($is_user as $key=>$value)

$is_user[$key]=trim(str_replace("?","(.)",$value));

$is_ext = "(.".implode("($|.))|(.",$is_user)."($|.))";

}

}

if($setting['hta']==1)

{

$is_hta=1;

$is_ext = strlen($is_ext)>0?$is_ext."|":$is_ext;

$is_ext.="(^.htaccess$)";

}

if($setting['all']==1 || (strlen($is_ext)==0 && $setting['hta']==0))

{

$is_ext="(.+)";

}

 

$php_code = getCode();

if(!is_readable($dir))

$dir = MYPATH;

$count=$scanned=0;

scan($dir,$is_ext);

$end=mktime();

$spent = ($end - $start);

?>

扫描: 文件| 发现: 可疑文件| 耗时: 秒

扫描路径:

No.

文件

更新时间

原因

特征

动作

}

}

}

ob_flush();

?>

function scan($path = '.',$is_ext){

global $php_code,$count,$scanned,$list;

$ignore = array('.', '..' );

$replace=array(" ","n","r","t");

$dh = @opendir( $path );

 

 

while(false!==($file=readdir($dh))){

if( !in_array( $file, $ignore ) ){

if( is_dir( "$path$file" ) ){

scan("$path$file/",$is_ext);

} else {

$current = $path.$file;

if(MYFULLPATH==$current) continue;

if(!preg_match("/$is_ext/i",$file)) continue;

if(is_readable($current))

{

$scanned++;

$content=file_get_contents($current);

$content= str_replace($replace,"",$content);

foreach($php_code as $key => $value)

{

if(preg_match("/$value/i",$content))

{

$count++;

$j = $count % 2 + 1;

$filetime = date('Y-m-d H:i:s',filemtime($current));

$reason = explode("->",$key);

$url = str_replace(REALPATH,HOST,$current);

preg_match("/$value/i",$content,$arr);

$list.="

$count

$current

$filetime

$reason[0]

$reason[1]

下载

";

//echo $key . "-" . $path . $file ."(" . $arr[0] . ")" ."
";

//echo $path . $file ."
";

break;

}

}

}

}

}

}

closedir( $dh );

}

function getSetting()

{

$Ssetting = array();

if(isset($_COOKIE['t00ls_s']))

{

$Ssetting = unserialize(base64_decode($_COOKIE['t00ls_s']));

$Ssetting['user']=isset($Ssetting['user'])?$Ssetting['user']:"php | php? | phtml | shtml";

$Ssetting['all']=isset($Ssetting['all'])?intval($Ssetting['all']):0;

$Ssetting['hta']=isset($Ssetting['hta'])?intval($Ssetting['hta']):1;

}

else

{

$Ssetting['user']="php | php? | phtml | shtml";

$Ssetting['all']=0;

$Ssetting['hta']=1;

setcookie("t00ls_s", base64_encode(serialize($Ssetting)), time()+60*60*24*365,"/");

}

return $Ssetting;

}

function getCode()

{

return array(

'后门特征->cha88.cn'=>'cha88.cn',

'后门特征->c99shell'=>'c99shell',

'后门特征->phpspy'=>'phpspy',

'后门特征->Scanners'=>'Scanners',

'后门特征->cmd.php'=>'cmd.php',

'后门特征->str_rot13'=>'str_rot13',

'后门特征->webshell'=>'webshell',

'后门特征->EgY_SpIdEr'=>'EgY_SpIdEr',

'后门特征->tools88.com'=>'tools88.com',

'后门特征->SECFORCE'=>'SECFORCE',

'后门特征->eval("?>'=>'eval(('|")?>',

'可疑代码特征->system('=>'system(',

'可疑代码特征->passthru('=>'passthru(',

'可疑代码特征->shell_exec('=>'shell_exec(',

'可疑代码特征->exec('=>'exec(',

'可疑代码特征->popen('=>'popen(',

'可疑代码特征->proc_open'=>'proc_open',

'可疑代码特征->eval($'=>'eval(('|"|s*)$',

'可疑代码特征->assert($'=>'assert(('|"|s*)$',

'危险MYSQL代码->returns string soname'=>'returnsstringsoname',

'危险MYSQL代码->into outfile'=>'intooutfile',

'危险MYSQL代码->load_file'=>'select(s+)(.*)load_file',

'Encryption backdoor characteristics->eval(gzinflate('=>'eval(gzinflate(',

'Encryption backdoor characteristics->eval(base64_decode('=>'eval(base64_decode(',

'Encryption backdoor characteristics->eval(gzuncompress('=>'eval(gzuncompress(',

'Encryption backdoor characteristics->eval(gzdecode('=>'eval(gzdecode(',

'Encryption backdoor characteristics->eval(str_rot13('=>'eval(str_rot13(',

'Encryption backdoor characteristics->gzuncompress(base64_decode('=>'gzuncompress(base64_decode(',

'Encryption backdoor characteristics->base64_decode(gzuncompress('=>'base64_decode(gzuncompress(',

'One sentence backdoor characteristics->eval($_'=>'eval(('|"|s*)$_(POST|GET|REQUEST|COOKIE)',

'One sentence backdoor characteristics->assert($_'=>'assert(('|"|s*)$_(POST|GET|REQUEST|COOKIE)',

'One sentence backdoor characteristics->require($_'=>'require(('|"|s*)$_(POST|GET|REQUEST|COOKIE)',

'One sentence backdoor characteristics->require_once($_'=>'require_once(('|"|s*)$_(POST|GET|REQUEST|COOKIE)',

'One sentence backdoor characteristics->include($_'=>'include(('|"|s*)$_(POST|GET|REQUEST|COOKIE)',

'One sentence backdoor characteristics->include_once($_'=>'include_once(('|"|s*)$_(POST|GET|REQUEST|COOKIE)',

'One sentence backdoor characteristics->call_user_func("assert"'=>'call_user_func(("|')assert("|')',

'One sentence backdoor characteristics->call_user_func($_'=>'call_user_func(('|"|s*)$_(POST|GET|REQUEST|COOKIE)',

'One sentence backdoor characteristics->$_POST/GET/REQUEST/COOKIE[?]($_POST/GET/REQUEST/COOKIE[?]'=>'$_(POST|GET|REQUEST|COOKIE) [([^]]+)](('|"|s*)$_(POST|GET|REQUEST|COOKIE)[',

'One sentence backdoor characteristics->echo(file_get_contents($_POST/GET/REQUEST/COOKIE'=>'echo(file_get_contents(('|"|s*)$_(POST|GET|REQUEST|COOKIE )',

'Upload backdoor characteristics->file_put_contents($_POST/GET/REQUEST/COOKIE,$_POST/GET/REQUEST/COOKIE'=>'file_put_contents(('|"|s*)$_(POST|GET |REQUEST|COOKIE)[([^]]+)],('|"|s*)$_(POST|GET|REQUEST|COOKIE)',

'Upload backdoor features->fputs(fopen("?","w"),$_POST/GET/REQUEST/COOKIE['=>'fputs(fopen((.+),('|" )w('|")),('|"|s*)$_(POST|GET|REQUEST|COOKIE)[',

'.htaccess plug-in feature->SetHandler application/x-httpd-php'=>'SetHandlerapplication/x-httpd-php',

'.htaccess plug-in feature->php_value auto_prepend_file'=>'php_valueauto_prepend_file',

'.htaccess plug-in feature->php_value auto_append_file'=>'php_valueauto_append_file'

);

}

?>

from:http://www.111cn.net/phper/phpanqn/52711.htm

My website today Trojan horse

It was a false alarm caused by Kaspersky, and it has been solved. It was the same for me. I entered safe mode for a long time but still couldn’t fix it. Later, I manually updated Kaspersky’s virus database and it was fine.
The following is a notice about this matter:
At 15:20 pm on May 19, CNZZ received the latest virus database update notification from Kaspersky China. The other party has solved the problem of false positives in CNZZ statistics. , CNZZ statistical services have returned to normal as soon as possible. If some users still report viruses, please update the Kaspersky virus database manually.

The website has a Trojan horse, and it cannot be opened as long as it is indexphp

Under normal circumstances, after the computer is poisoned or infected with Trojans or viruses, the Trojan viruses will destroy the system. General anti-virus software cannot solve these problems. It is recommended that you use system repair tools such as Kingsoft Network Shield or Kingsoft First Aid Kit to repair the system. Fix, that's how I solved the problem.
Suggest you the best solution

Step 1: Download Kingsoft Antivirus 2011 [Search Kingsoft Antivirus on Baidu] Select the official download

Step 2: After installation, open Kingsoft Antivirus and click "Comprehensive search and killing"

http://www.bkjia.com/PHPjc/905902.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/905902.htmlTechArticleSummary of repair methods for php websites with Trojans hanging, summary of php Trojans hanging In Linux, we can use commands to search for Trojan files , go to the code installation directory and execute the following command code. Copy the code as follows...