How to remove SYSTEM virus and restore encrypted files

SYSTEM ransomware virus

This item is dedicated to SYSTEM virus that gets into computers around the world, and encrypts the files. In this item we've compiled complete info about SYSTEM's essence, and how to get rid of SYSTEM from the computer. Furthermore, we'll teach you how to recover the cyphered files and is it possible.

SYSTEM is the undesired software getting into PC's mostly through Trojans and phishing e-mails. Sometimes scammers use zero-day vulnerabilities to get into the PC, but they are quickly fixed. When infection is done, the virus checks the PC memory, determines the quantity of folders for encryption and their approximate worth. Currently, any new virus knows how to cypher video, image, text and audio information in all popular extensions. Virus cyphers all folders, but those that look like business documents go first. All programs on hard drive will be unaffected because fraudsters want only information. The process is executed through world-known AES and RSA algorithms, and it is so complex that that decipherment of data with no key is impossible. Such complexity gives basis for such an incredible effectuality of this type of viruses in last years: common PC operator, even having a fairly high experience in suchlike things, won't ever be able to get back the files, and will need to pay the price. The sole method to recover the information is to find the scammer's webpage and obtain the encryption keys. Also there's a chance to obtain the keys due to flaws in the code of the virus itself. The encrypted files get .system extension, renamed with 32 random letters, and the amount of ransom is 500-1500$.


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For all sorts of ransomware, one statement is correct: it is way easier to avoid it than to cure it. For encrypting software it's most relevant, as, unlike common dangerous programs, when you eliminate ransomware from the computer, the fruits of its doings will stay. To defend your information, you must understand a three basic regulations:

  • Carefully study your mailbox, particularly the messages that have attached files. If this message comes from an unknown user and it notifies about winning some prize, a lost package or anything similar, this might be a scam message. You also should keep an eye on business correspondence, particularly if the sender and the content is unknown. appeals, Bills for services and products, lawsuits, summaries and similar important documents do not be sent without warning, and you, as a minimum, should know the person who sent it. In most of the cases it is a fraud.
  • Heed to the pop-ups. If the machine is infected by ransomware, it will attempt to eliminate the shadow copies of your files, to make the decryption impossible. However removal of copies requires admin rights and acceptance from the operator. If you'll think for few seconds before confirming the dialogue box, it may save your data and your time.
  • Keep an eye on the state of your laptop. File encryption is a intricate process that requires a lot of computer resources. If you detect a strange decrease in PC capacity or see a strange string in the Process Manager, you can unplug the workstation, load it in safe mode, and scan for threats. These measures, in case of infection, will guard some of your files.

Ransomware deletion is not the happy end - it's just a one turn from many until the total file recovery. If you remove virus, you will not recover the information immediately, it will require more measures written down in the next part. To deelete SYSTEM, user has to start the laptop at safe mode and scan it through antivirus. Some viruses can't be uninstalled even via antivirus-software, and have lots of effective mechanisms of security. Some ransomware are able to totally erase corrupted information, or part of it, when trying to delete the virus. This is extremely unwanted, and the below instruction will help you to avoid it.

Removal instruction

Step 1. Boot into Safe mode

Safe mode

Start -> Msconfig.exe

Safe mode. Step 1

On the tab Boot select Safe boot

Safe mode. Step 2

Step 2. Check Startup folder

Start -> Msconfig.exe ->Disable unknown programs in the Startup tab


Step 3. Check hosts file

Modify hosts file, that located in C:\Windows\System32\drivers\etc\ .

Hosts file.Step 1

Open the file with Notepad and delete suspicious strings.

Hosts file.Step 2

It has to look like this:

Hosts file.Step 3

Step 4. Scan the system with antiviral scanner


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Step 5. Disable Safe mode

Start -> Msconfig.exe ->Disable Safe boot in the Boot tab

Deactivate Safe mode

If you performed all conditions, mentioned in above paragraph - it's time to decrypt the information. We're not able to reverse the encryption, but we'll recover them using OS functionality and the additional programs. There are the some exceptions, but usually data recovery needs plenty of time and money. If you can't linger and are going to restore the information in manual mode - here's the full article on that topic.

To restore information, follow the article about files decryption.

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