How to remove Kgpvwnr virus and restore encrypted files

The article is about virus called Kgpvwnr that gets onto laptops around the world, and corrupts the files. Here you can see important info about Kgpvwnr's essence, and the deletion of Kgpvwnr from your computer. Furthermore, we will tell you how to recover the corrupted data, if possible.


Kgpvwnr is the perilous program infecting machines mostly via Trojans and phishing e-mails. Also, web-criminals use zero-day vulnerabilities to get into the PC, but well-known program vendors quickly fix them. When infection takes place, ransomware examines the computer memory, defines the amount of folders to be cyphered and their general worth. At the moment, each new ransomware knows how to cypher text, video, audio and image files in all known formats. Special attention is attracted to business files, because businessmen are the key objective for criminals. Kgpvwnr targets only information, and does not touch the software, so that the user can use the PC to pay the ransom. Encryption is carried out with the help of world-known AES and RSA algorithms, and its intricacy is so high that decipherment of information without a key is impossible. This is the basis for such a stunning effectuality of this sort of viruses in recent years: common customer, even having a fairly high experience in suchlike things, will never be able to decrypt the files, and will have no way out except paying to criminals. The single manner to get back the information is to hack the scam website and obtain the master key. Some experienced hackers can obtain the keys via flaws in viruse's program code.


Kgpvwnr virus


During the encryption, Kgpvwnr can also change file extension to random. You should know that the elimination of Kgpvwnr is only the first and required step for the normal operation of the machine. To restore the files you should follow the instructions in the below section of our article. To uninstall any malware, user needs to launch the PC at safe mode and check it via antivirus. High grade ransomware can't be removed even via AV-software, and have other efficient mechanisms of defense. Modern viruses can easily delete cyphered data, or part of it, if somebody tries to uninstall the program. To avoid this, abide to the advices under this paragraph.


There is one common feature for all sorts of computer viruses: it's much easier to dodge it than to remove its consequences. Statistically, most people comprehend the importance of computer literacy just after ransomware infection. To defend your information, you have to remember a three elementary principles:


    • Be cautious with the messages which contain something more than a message. The most popular model of scam letters is the notification about prize winning or parcel receiving. The #2 common type of these letters is a forgery for business correspondence. It is natural to be interested and open the message even if it's sent to the improper address, but don't forget that a single click on the viral file may cost you a lot of time, headache and money.
    • Monitor the status of your laptop. Information encryption is a complicated act that needs a lot of system resources. In few minutes after the infection, the CPU speed decreases, and the encrypting process is visible in Process Manager. You may recognize this moment and shut down the system before information will be fully encoded. These measures, if the machine is really infected, will guard some of your information.
    • Do not accept any changes to your PC, coming from suspicious software. If the system is penetrated by ransomware, it will seek to delete all copies of the data, to make the decryption less possible. However deletion of copies requires administrator rights and confirmation from the operator. So, if you do not accept changes from a suspicious program at the proper moment, you will keep the chances to recover all lost data free of charge.


Removal instruction

If you are MAC user, follow this guide: how to decrypt files on MAC.




Step 1. Boot the system into safe mode

  • Press Start
  • Type Msconfig and press Enter

Safe mode. Step 1


  • Select Boot tab

Safe mode. Step 2



  • Select Safe boot and press Ok

More information about Safe mode: What is Safe Mode and how to boot computer in Safe Mode


Step 2. Show all hidden files and folders

  • Press Start
  • Click on Control Panel

Show hidden files. Step 1


  • Select Appearance and Personalization

Show hidden files. Step 2


  • Click on Folder Options
  • Select View tab
  • Select Show hidden files, folders and drives

Show hidden files. Step 3


  • Press Ok


Step 3. Remove virus files


Check next folders to find suspicious files:

  • %TEMP%
  • %ProgramData%


Step 4. Fix hosts file

  • Go to %SystemRoot%\System32\drivers\etc\ folder



  • Open hosts file using Notepad or other text editor
  • Delete suspicious elements
  • Basic hosts file looks like this:



Step 5. Clean registry (for experienced users)

  • Click Start
  • Type Regedit.exe and press Enter
  • Clean startup registry keys
  • HKEY_LOCAL_MACHINE(HKEY_CURRENT_USER)\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE(HKEY_CURRENT_USER)\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_LOCAL_MACHINE(HKEY_CURRENT_USER)\Software\Microsoft\Windows\CurrentVersion\RunServices
  • HKEY_LOCAL_MACHINE(HKEY_CURRENT_USER)\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit

Step 6. Scan computer with antivirus


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Step 7. Disable Safe Mode and restart computer

  • Press Start
  • Type Msconfig and press Enter
  • Select Boot tab
  • Remove the check near Safe boot

If you performed all conditions, described in previous paragraph - it's time to restore the information. In fact, this is not literally decryption, because the encryption methods used by swindlers are extremely complex. More often than not, to recover the files, you should seek help on specialized forums or from celebrated virus researchers and antivirus program manufacturers. If you choose the manual information recovery - read our entry, which describes all the easiest ways.

  • Click Start
  • Click Control Panel

Decrypt files. Step 1


  • Click System and Security

Decrypt files. Step 2


  • Select Backup and Restore

Decrypt files. Step 3


  • Select Restore files from backup
  • Select checkpoint to restore
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