php网站被挂木马后的修复方法总结

前端技术 2023/09/04 PHP

本文实例总结了php网站被挂木马后的修复方法。分享给大家供大家参考。具体方法如下：

在linux中我们可以使用命令来搜查木马文件,到代码安装目录执行下面命令

复制代码 代码如下:
find ./ -iname \"*.php\" | xargs grep -H -n \"eval(base64_decode\"

搜出来接近100条结果，这个结果列表很重要，木马都在里面，要一个一个文件打开验证是否是木马，如果是，马上删除掉
最后找到10个木马文件，存放在各种目录，都是php webshell，功能很齐全，用base64编码
如果你在windows中查找目录直接使用windows文件搜索就可以了，可以搜索eval或最近修改文件，然后如果是dedecms我们要查看最新dedecms漏洞呀然后修补。

下面给个php木马查找工具,直接放到你站点根目录
 

复制代码 代码如下:
<?php
/**************PHP Web木马扫描器************************/
/* [+] 作者: alibaba */
/* [+] MSN: weeming21@hotmail.com */
/* [+] 首发: t00ls.net , 转载请注明t00ls */
/* [+] 版本: v1.0 */
/* [+] 功能: web版php木马扫描工具*/
/* [+] 注意: 扫描出来的文件并不一定就是后门, */
/* 请自行判断、审核、对比原文件。*/
/* 如果你不确定扫出来的文件是否为后门，*/
/* 欢迎你把该文件发给我进行分析。*/
/*******************************************************/
ob_start();
set_time_limit(0);
$username = \"t00ls\"; //设置用户名
$password = \"t00ls\"; //设置密码
$md5 = md5(md5($username).md5($password));
$version = \"PHP Web木马扫描器v1.0\";
 
PHP Web 木马扫描器
$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\']);
?>
<html>
<head>
<title><?php echo $version?></title>
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=gb2312\" />
<style>
body{margin:0px;}
body,td{font: 12px Arial,Tahoma;line-height: 16px;}
a {color: #00f;text-decoration:underline;}
a:hover{color: #f00;text-decoration:none;}
.alt1 td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#f1f1f1;padding:5px 10px 5px 5px;}
.alt2 td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#f9f9f9;padding:5px 10px 5px 5px;}
.focus td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#ffffaa;padding:5px 10px 5px 5px;}
.head td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#e9e9e9;padding:5px 10px 5px 5px;font-weight:bold;}
.head td span{font-weight:normal;}
</style>
</head>
<body>
<?php
if(!(isset($_COOKIE[\'t00ls\']) && $_COOKIE[\'t00ls\'] == $md5) && !(isset($_POST[\'username\']) && isset($_POST[\'password\']) && (md5(md5($_POST[\'username\']).md5($_POST[\'password\']))==$md5)))
{
echo \'<form id=\"frmlogin\" name=\"frmlogin\" method=\"post\" action=\"\">用户名: <input type=\"text\" name=\"username\" id=\"username\" /> 密码: <input type=\"password\" name=\"password\" id=\"password\" /> <input type=\"submit\" name=\"btnLogin\" id=\"btnLogin\" value=\"登陆\" /></form>\';
}
elseif(isset($_POST[\'username\']) && isset($_POST[\'password\']) && (md5(md5($_POST[\'username\']).md5($_POST[\'password\']))==$md5))
{
setcookie(\"t00ls\", $md5, time()+60*60*24*365,\"/\");
echo \"登陆成功！\";
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();
}
?>
<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"100%\">
<tbody><tr class=\"head\">
<td><?php echo $_SERVER[\'SERVER_ADDR\']?><span style=\"float: right; font-weight:bold;\"><?php echo \"<a href=\'http://www.t00ls.net/\'>$version</a>\"?></span></td>
</tr>
<tr class=\"alt1\">
<td><span style=\"float: right;\"><?=date(\"Y-m-d H:i:s\",mktime())?></span>
<a href=\"?action=scan\">扫描</a> |
<a href=\"?action=setting\">设定</a> |
<a href=\"?action=logout\">登出</a>
</td>
</tr>
</tbody></table>
<br>
<?php
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();
}
?>
<form name=\"frmSetting\" method=\"post\" action=\"?action=setting\">
<FIELDSET style=\"width:400px\">
<LEGEND>扫描设定</LEGEND>
<table width=\"100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">
<tr>
<td width=\"60\">文件后缀:</td>
<td width=\"300\"><input type=\"text\" name=\"checkuser\" id=\"checkuser\" style=\"width:300px;\" value=\"<?php echo $setting[\'user\']?>\"></td>
</tr>
<tr>
<td><label for=\"checkall\">所有文件</label></td>
<td><input type=\"checkbox\" name=\"checkall\" id=\"checkall\" <?php if($setting[\'all\']==1) echo \"checked\"?>></td>
</tr>
<tr>
<td><label for=\"checkhta\">设置文件</label></td>
<td><input type=\"checkbox\" name=\"checkhta\" id=\"checkhta\" <?php if($setting[\'hta\']==1) echo \"checked\"?>></td>
</tr>
<tr>
<td> </td>
<td>
<input type=\"submit\" name=\"btnsetting\" id=\"btnsetting\" value=\"提交\">
</td>
</tr>
</table>
</fieldset>
</form>
<?php
}
else
{
$dir = isset($_POST[\'path\'])?$_POST[\'path\']:MYPATH;
$dir = substr($dir,-1)!=\"/\"?$dir.\"/\":$dir;
?>
<form name=\"frmScan\" method=\"post\" action=\"\">
<table width=\"100%%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">
<tr>
<td width=\"35\" style=\"vertical-align:middle; padding-left:5px;\">扫描路径:</td>
<td width=\"690\">
<input type=\"text\" name=\"path\" id=\"path\" style=\"width:600px\" value=\"<?php echo $dir?>\">
  <input type=\"submit\" name=\"btnScan\" id=\"btnScan\" value=\"开始扫描\"></td>
</tr>
</table(www.phpstudy.net)>
</form>
<?php
if(isset($_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);
?>
<div style=\"padding:10px; background-color:#ccc\">扫描: <?php echo $scanned?> 文件| 发现: <?php echo $count?> 可疑文件| 耗时: <?php echo $spent?> 秒</div>
<table width=\"100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">
<tr class=\"head\">
<td width=\"15\" align=\"center\">No.</td>
<td width=\"48%\">文件</td>
<td width=\"12%\">更新时间</td>
<td width=\"10%\">原因</td>
<td width=\"20%\">特征</td>
<td>动作</td>
</tr>
<?php echo $list?>
</table>
<?php
}
}
}
ob_flush();
?>
</body>
</html>
<?php
function scan($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);
$list.=\"
<tr class=\'alt$j\' onmouseover=\'this.className=\"focus\";\' onmouseout=\'this.className=\"alt$j\";\'>
<td>$count</td>
<td><a href=\'$url\' target=\'_blank\'>$current</a></td>
<td>$filetime</td>
<td><font color=red>$reason[0]</font></td>
<td><font color=#090>$reason[1]</font></td>
<td><a href=\'?action=download&file=$current\' target=\'_blank\'>下载</a></td>
</tr>\";
//echo $key . \"-\" . $path . $file .\"(\" . $arr[0] . \")\" .\"<br />\";
//echo $path . $file .\"<br />\";
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\',
\'加密后门特征->eval(gzinflate(\'=>\'eval(gzinflate(\',
\'加密后门特征->eval(base64_decode(\'=>\'eval(base64_decode(\',
\'加密后门特征->eval(gzuncompress(\'=>\'eval(gzuncompress(\',
\'加密后门特征->eval(gzdecode(\'=>\'eval(gzdecode(\',
\'加密后门特征->eval(str_rot13(\'=>\'eval(str_rot13(\',
\'加密后门特征->gzuncompress(base64_decode(\'=>\'gzuncompress(base64_decode(\',
\'加密后门特征->base64_decode(gzuncompress(\'=>\'base64_decode(gzuncompress(\',
\'一句话后门特征->eval($_\'=>\'eval((\'|\"|s*)\\$_(POST|GET|REQUEST|COOKIE)\',
\'一句话后门特征->assert($_\'=>\'assert((\'|\"|s*)\\$_(POST|GET|REQUEST|COOKIE)\',
\'一句话后门特征->require($_\'=>\'require((\'|\"|s*)\\$_(POST|GET|REQUEST|COOKIE)\',
\'一句话后门特征->require_once($_\'=>\'require_once((\'|\"|s*)\\$_(POST|GET|REQUEST|COOKIE)\',
\'一句话后门特征->include($_\'=>\'include((\'|\"|s*)\\$_(POST|GET|REQUEST|COOKIE)\',
\'一句话后门特征->include_once($_\'=>\'include_once((\'|\"|s*)\\$_(POST|GET|REQUEST|COOKIE)\',
\'一句话后门特征->call_user_func(\"assert\"\'=>\'call_user_func((\"|\')assert(\"|\')\',
\'一句话后门特征->call_user_func($_\'=>\'call_user_func((\'|\"|s*)\\$_(POST|GET|REQUEST|COOKIE)\',
\'一句话后门特征->$_POST/GET/REQUEST/COOKIE[?]($_POST/GET/REQUEST/COOKIE[?]\'=>\'$_(POST|GET|REQUEST|COOKIE)[([^]]+)]((\'|\"|s*)\\$_(POST|GET|REQUEST|COOKIE)[\',
\'一句话后门特征->echo(file_get_contents($_POST/GET/REQUEST/COOKIE\'=>\'echo(file_get_contents((\'|\"|s*)\\$_(POST|GET|REQUEST|COOKIE)\',
\'上传后门特征->file_put_contents($_POST/GET/REQUEST/COOKIE,$_POST/GET/REQUEST/COOKIE\'=>\'file_put_contents((\'|\"|s*)\\$_(POST|GET|REQUEST|COOKIE)[([^]]+)],(\'|\"|s*)\\$_(POST|GET|REQUEST|COOKIE)\',
\'上传后门特征->fputs(fopen(\"?\",\"w\"),$_POST/GET/REQUEST/COOKIE[\'=>\'fputs(fopen((.+),(\'|\")w(\'|\")),(\'|\"|s*)\\$_(POST|GET|REQUEST|COOKIE)[\',
\'.htaccess插马特征->SetHandler application/x-httpd-php\'=>\'SetHandlerapplication/x-httpd-php\',
\'.htaccess插马特征->php_value auto_prepend_file\'=>\'php_valueauto_prepend_file\',
\'.htaccess插马特征->php_value auto_append_file\'=>\'php_valueauto_append_file\'
);
}
?>

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