How to detect and clear website malware after being hacked

Almost all IT people know that Google has the ability to detect website malware. If Google's Googlebot detects that your website is infected with malware, when a user clicks a link to try to view your webpage, a large red warning sign is displayed, telling the user: your website contains malware. Therefore, malware can cause massive losses to the website owner. However, if you suspect that your website is infected, there are always ways to detect and find malware. After all, Removing malware from the system to protect visitors is to protect your own interests.

How do hackers install malware? Hackers use multiple methods to gain access to your website. One of the most critical methods is to find your vulnerability. Hackers can use the keyboard record program or virus to obtain the administrator password, so that they can further modify the server's main configuration files.

Remove malware from the website

One common access method for hackers is through Wordpress. WordPress is a powerful Blog system. It has many plug-ins and is easy to expand, and is easy to install and use. Currently, WordPress has become a mainstream Blog building platform. It is very important that the website owner usually needs to keep its Wordpress version up to date. Wordpress often releases updates to its software to block vulnerabilities and prevent hackers from accessing files that only Administrators can access on the website. The Wordpress File must be checked to find common malware code, but other dynamic code files should also be thoroughly checked. This includes PHP, VB. NET, C #, Javascript, and other encoded files.

The files that need to be checked are Javascript-encoded files. Find the document. write function in each file. Hackers often put this function in Javascript files to write a redirection to the target website. If this function command is displayed to send the viewer to an IP address or an unconfirmed or identified website, this is the location of the malware to be cleared.

Another common function in hacker scripts is base64_decode. It will hide the conspiracy that truly redirects to the hacker's website, so the code changes to the website are not so obvious. Security management personnel should check every PHP file to find such text. Hackers usually put this function at the end of your website code file, so it is not easy to quickly view the web page.

Check the. htaccess file to find malware

When a reader or viewer accesses your website, The. htaccess file controls many behaviors of your website. Hackers often place redirection in your. htaccess file, which is placed in the root directory of your website. This file uses a plain text file format, so you can use any simple editor to quickly view this file. Therefore, you should check the file and find any redirection to see if it points to an IP address or website that you have not confirmed.

 

The most extreme situation is that you want to restore website files from backup. Any changes to the file will be lost, but it can make the website operate normally, and you will not continue to lose money. In addition, it is very important that you find security vulnerabilities. Only in this way will hackers not destroy your files one day in the future.