How to remove Pumax virus and restore encrypted files

Pumax can be considered a bogey of mankind, and we all know that if you cannot access the files and you see a ransom note – it’s time to worry. It is a true, unfortunately. An encrypting virus is the worst threat that you might face in the Net because a regular customer literally cannot delete it. The only event when you can beat an encrypting virus is if you aren't dealing with a true one, but a screenlocker, that covers the display and attempts to trick you into paying a ransom. In all other events, if ransomware was developed and maintained in a proper way – you can just hope that ransomware researchers can beat it. If swindlers committed an error, and a ransomware has some flaws, which allow you to recover information – we will explain to you what you can do in our item.


Pumax consists of a totally legitimate encryption algorithm that changes all folders on operator’s PC and makes them unreadable without a key. Of course, a key is also encoded with a different method. In most cases, swindlers favour RSA and AES methods, that have demonstrated themselves the most complex and sustainable. The mentioned algorithms and the programs based on them are in free access in the Web, so web-criminals only have to invent mechanisms of defense, to restrict an inlet to a ransomware, and make the reliable control and update pattern. Some pieces of ransomware just work off-line, and swindlers know about another "client" only when he writes them and sends his ransom. Other viruses are work in different manner, and deliver reports to thousands URL's, to puzzle the security specialists and maximize the time required to defeat a virus.



Regardless of virus' sort, the AES and RSA methods are overly tricky difficult to decipher them directly. It might take hundreds of years to make all necessary operations on a regular computer and, possibly, twenty or thirty years if you have an access to a mega-powerful computer. There are two basic ways to beat an encrypting malware: to hack it, or break into its database, to receive a master key. In rare cases there is a breaker, allowing to stop virus' activity totally or to drive it off the infected PC. If anyone finds such breaker for this virus, or publish a decryption tool, we'll update this guide.


Here you can see some methods to examine, before you can yield and wait for a decryptor. As it is written above, swindlers make mistakes, and some specialties of your Windows can assist you to restore information.


  • If you do not employ the Windows via an administrator's profile – it's time to compliment yourself. The catch is that your system creates backups of any files before they’re eliminated or modified. These files are known as the SVC, and the virus knows how to delete them. If you're using the user's account – the system asks for a confirmation at the exact moment Pumax goes to erase SVC. In case you've seen suchlike confirmation and declined it – your copies are safe, and you might use a specialized tool to get back the data.
  • If you've made a copy of the system, and placed it on an external media – just eliminate a virus and use it. Make sure that the virus is uninstalled entirely, since if it’s not – all files will be encrypted instantly, including those that were kept on an outer hard disc.


If all of these hints didn't work and there is no chance to restore the data – you better remove the ransomware from your system and wait until a decryption software will be created.

How to remove Pumax

Unfortunately, there’s no possibility to totally escape an automatic mode. This virus is very stealthy and you can miss some elements and then regret it (for instance, when you attach an outer drive with the saved information to a not-fully-clean device). It also lurks pretty well, so you literally won’t have a chance to get rid of it fully in manual mode. Here's your deletion guide which can help you to get rid of this problem. It contains some by-hand phases and an extra anti-viral program stage.

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

Here's Spyhunter anti-viral tool which is not simply efficient, but also light weight and continuously progressing tool which is able to clean the PC of all harmful programs. Press the button under this paragraph to download our tool and eliminate Pumax.


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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

How to restore files

As you cleared your system of the virus, it's time for the file recovery. As we said before, if you use an admin account and you permitted Pumax a pass into the computer – you have no way to get back your data except for the backups. If you that didn't happen – you might have some chances, but it needs topical recovery software. The best ones of them are ShadowExplorer and Recuva programs. You can get these programs easily on their official websites, with thorough instructions.

  • 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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