How to remove Ykcol virus and restore encrypted files

Ykcol ransomware virus

This item is dedicated to ransomware called Ykcol that gets onto PC in all countries of the world, and corrupts their files. Here you can see complete information on Ykcol's essence, and the uninstalling of Ykcol from the computer. Except that, we'll explain how to get back the corrupted files, if possible.

Ykcol is a new version of Locky virus. Last modification has Lukitus name and adds to files.lukitus extensions. Ykcol is the undesired program getting into PC's mostly through Trojans and phishing e-mails. Occasionally hackers use zero-day vulnerabilities to penetrate the system, but big software developers quickly correct them. When infection is done, ransomware examines the hard drive to find the folders for encryption and their rough price. At the moment, each modern ransomware is able to cypher audio, video, text and image information in all most used extensions. Ykcol encrypts all files, but those that might be business records go first. All programs in the system will be untouched because scammers are interested only in information. The operation is executed with the help of well-known AES and RSA algorithms, and it is so sophisticated that that decipherment of information without a key is impossible. Such complexity gives ground for unbelievable effectuality of this type of viruses in last years: usual PC operator, even if he has a pretty high knowledge of the PC, will never be able to decrypt the data, and will need to pay ransom. The single way to get back files is to hack the fraudster's site and withdraw the master key. Also there's a chance to retrieve encryption keys due to faults in viruse's program code. When encrypting files, Ykcol switches the extension of files to .Ykcol, and requires 0.5 bitcoins (at this moment) for file restoration.

There is one common feature for all sorts of dangerous software: it's way simpler to avoid it than to neutralize its consequences. Statistically, most people comprehend the significance of computer knowledge just when ransomware takes over their workstations. To shield yourself, you need to remember these three simple regulations:

  • Do not neglect the signs that your hardware or software displays. Information encryption is a intricate operation that needs a high amount of system resources. In the first minutes of infection, the workstation slows down, and the encryption process can be found in Process Manager. You might anticipate this event and switch off the system before data will be totally encrypted. These measures, in case of penetration, will guard a lot of your files.
  • Be cautious with the messages which contain data. The most effective model of scam letters is the story about prize winning or parcel earning. The other effective kind of fraud messages is a forgery for business correspondence. It is OK to be interested and click on the message even if it's sent to the improper address, but remember that one click on the attached file can cost you a lot of time, money and headache.
  • Don't admit any alterations to your PC, coming from unknown software. The most effective way of data recovery is the recovery from Shadow Copies, and fraudsters have added the deletion of SC into the primary features of malware. The removal of shadow copies needs administrator rights and verification from the operator. So, not accepting changes from a suspicious software at the right moment, you will save the way to recover all lost data free of charge.

Ykcol virus

Malware removal is not solution of the whole problem - it's just a first turn from many before the complete file recovery. To decrypt the files you'll need to follow the tips in the following part of our article. To eliminate any ransomware, user has to boot the system at safe mode and check it via antivirus. Some ransomware can't be deleted even through antivirus-tool, and have many efficient mechanics of security. The most effective ransomware defensive technique is the uninstalling of data on the chance of data restoration or ransomware removal attempt. To neutralize this, abide to the instructions below.

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

After removing the ransomware from the workstation, user has to get back the encrypted data. We won't try to reverse the encryption, but we'll restore them using OS functionality and the additional software. More often than not, to restore the information, you should seek support on specialized communities or from renowned malware fighters and AV program vendors. If you don't want to linger and are ready to get back the information manually - here's the full entry on data recovery.

To restore information, follow the article about files decryption.

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