How to remove Mosk virus and restore encrypted files

If you've faced a ransomware and have reasons to suggest that it’s the Mosk program – in our item you'll find useful information. We offer plain and tested instructions for Mosk deletion and potential methods to restore the wasted data.


Encryption virus is a scarecrow of mankind, and everyone knows that if you can't access the files and there's a ransom note – it’s time to worry. It’s a valid reaction, by the way. Ransomware threat is the ugliest thing that might happen to you on the Internet since a common person has no resources to eliminate it. The single event when you're able to beat ransomware is if you are not facing a true virus, but a fake, that covers your screen and attempts to lure your funds. In all other cases, if a virus was created and secured in a right method – you can only expect that virus fighters can defeat it. If fraudsters failed somehow, and a virus has some drawbacks, which allow you to recover data – you'll find an answer in this article.



Ransomware type is not important, as the AES and RSA algorithms are very complicated to decipher them directly. It will take centuries to execute all required operations on a modern machine and, maybe, twenty or thirty years if you will use a super-efficient gear. The best manner to neutralize a decent encrypting malware is to hack into it, or hack its database, to find encryption keys. Rare ransomware examples also have a breaker that can cease virus' activity in full or to make it pass the infected machine. If some parson finds such switch for this ransomware, or publish a decryptor, we will update this article.


So, what is ransomware? It is founded on a completely legal coding algorithm that modifies all folders on user’s workstation and makes them unreadable without a key. Of course, a key is also encoded with a different manner. As usual, scammers choose RSA and AES algorithms, which are famous for their complexity and fail-safety. These methods and the programs built upon them can be easily found in the Net, so web-criminals just need to add protective mechanisms, to block an access to a program, and make the perfect control and update system. Some viruses just function on their own, and scammers get a report of a new "client" only when he writes them and sends the money. Other encrypting viruses are function in different manner, and send data to hundreds servers, to puzzle the researchers and maximize the work required to defeat a ransomware.


There are some alternatives to inspect, before you can yield and wait for a decryption software. As we said earlier, Internet-criminals also fail, and some characteristics of the system may serve you to recover information.


  • A backup is the sole totally effective way to get your information back, but you should remove a ransomware first. Ensure that Mosk is deleted entirely, since if it’s not – all data will be corrupted again, with the files that were stored on an outer hard drive.
  • If you utilize an entry with no admin authorization – it's your happy day. The matter is that your OS creates copies of all information until their deletion or modification. Suchlike backups are called Shadow Volume Copies, and Mosk knows how to destroy them. If you are operating from the regular account – the system requests for a confirmation at the very moment Mosk starts to remove SVC. In case you saw suchlike confirmation and declined it – your copies are safe, and might be used to recover the data.


If both of these hints didn't help and you have no way to restore your data – you should eliminate Mosk from your PC and wait until a decryption software will be published.

How to remove Mosk

As for the deletion – there’s no possibility to completely avoid an installation of software. Mosk is too tricky and you could pass some remains and then regret it (for example, when you connect a flash drive with your saved data to a not-completely-purged system). It also conceals damn good, and you just won’t be able to get rid of it entirely with your own hands. Knowing this, we have made a decent removal specification which will suit all your needs. It has some manual phases and one extra anti-viral tool step.

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

We propose you to try Spyhunter AV software which is not just effective, but also fast and constantly progressing tool which is able to clear your computer of all viruses. Press the button below to buy Spyhunter and uninstall the ransomware.


Special Offer

Download Spyhunter - Anti-malware scanner

We advise downloading SpyHunter to see, if it can detect malware for you.

Spyhunter has a biggest malware database

It protects the system against all kinds of threats: Trojans, adware and hijackers

24/7 Free Support Team

SpyHunter scanner detects threats and malware for free, but to remove infected elements you need to purchase a full version of program for 39.99$. More information about Spyhunter, EULA and Privacy policy.


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

If you deleted Mosk, you should try to do some info recovery. As you know now, if you use an administrator profile and you granted Mosk an access to the PC – there is no method to recover your data except for the backups. If you use a regular profile – you might have some chances, but you will need topical recovery tool. We advise you to use ShadowExplorer and Recuva tools. They're easy to download on their official sites, 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


Share your feedback to help other people
1 1 1 1 1 1 1 1 1 1 Rating 5.00 [1 Vote]

Add comment

Security code



Acronis suggestion to CrashPlans users

Around a month ago, there was an accident with CrashPlans backup software.

What is MicTrayDebugger and is it dangerous

This is a brief entry about MicTrayDebugger: what is it, how it appeared in the system, is it dangerous and how to get rid of it.

What is HoeflerText and is it dangerous?


This article is dedicated to the fraud scheme that is called HoeflerText font wasn't found. We will explain you what is this scheme and how to avoid it.

What is Wpad.dat virus and how it is used

The topic of our today's article is a script that had been unjustly called a virus. It’s Wpad.dat, and it is not a virus. We will explain what is Wpad.dat and how to prevent fraudsters to deceive yourself with its help.


Cancer virus trollware

This is an article about crazy Cancer virus and the madness that it brings to victim's computer.

This website uses cookies to improve your experience