最近我所有的php文件都在每个文件的开头开发了一些垃圾代码，我会在最后粘贴一个文件给你看。我清理此代码的任何文件都停止工作或存在一些重大问题。请帮忙，下面的文件是我认为添加按钮的代码，如果我按原样使用这个文件那么一切正常，如果我删除垃圾代码然后它停止工作

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$azebdqinoq=$ghyzwmwujj-1; ?><?php include_once("php_includes/check_login_status.php");

最佳答案

那不是“垃圾”，而是通过漏洞(即过时代码等)在您的服务器上安装的一段恶意软件。从下面的链接可以看出，该漏洞可能与 WordPress MailPoet 插件有关，但许多可能的漏洞都可能导致相同的结果

怎么办:让安全专家检查服务器。

可能就足够了:

• 从干净的备份中恢复所有文件，并将所有相关软件升级到最新版本和安全补丁级别(如果可能，最好离线执行此操作)。
• 禁用所有存在突出漏洞报告且没有可用缓解措施的插件或软件包(您必须检查相关站点和邮件列表)。
• 验证服务器上所有文件的时间戳，寻找“文件 block ”(大量文件，尤其是不相关的文件，在同一日期和时间左右修改)和可疑的时间戳(例如，在网站管理员工作时间以外上传或修改的 PHP 文件) ，或在不应该修改的情况下修改的文件(例如系统文件等)，或不在其应有位置的文件(数据目录中的可执行文件)或看起来可疑的文件(例如随机名称)。
• 检查网络服务器日志中是否存在可疑事件，尤其是涉及 IP 地址 31.184.192.250 或类似地址(见下文)。
• 如果存在，还要检查其他可能的日志:邮件服务器、SSH、登录、FTP。

半技术性的东西和琐事:我已经解密了代码 - 经过几层混淆后，核心似乎是 this 的近亲，可能完全相同。 .它似乎是在 2013 年平安夜前不久首次出现在中文网站上，当时网站管理员 called for help .

命令和控制服务器的域名已于 2013 年 11 月注册，位于俄罗斯圣彼得堡。 URL 显然没有响应(但内部检查可能会区分“原始”恶意软件和被破坏以调查协议(protocol)的恶意软件，并拒绝回答后者)。

可以找到恶意软件的明文脚本here在 GitHub 上(不用说，请谨慎行事)。

关于php - 出现在 PHP 文件开头的垃圾代码，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26718965/