How to remove Lokas virus and restore encrypted files

The entry is about Lokas virus that gets onto computer around the world, and encrypts the files. Here we've compiled full information on Lokas's essence, and how to eliminate Lokas from the laptop. Furthermore, we'll tell you how to restore the corrupted information, if possible.

Lokas ransomware virus

Lokas ransomware had infected hundreds of computers in different parts of the world via most effective method: scam messages with viral attachments. Occasionally hackers use zero-day vulnerabilities to take control over the computer, but major software developers promptly fix them. When infection is done, ransomware scans the PC memory, defines the quantity of files to be cyphered and their general price. Nowadays, each modern ransomware is able to encrypt image, text, audio and video files in all known extensions. Lokas cyphers all files, but the ones that could be business correspondence go first. All software in the system will be untouched because criminals want only information. Encryption is carried out via famous AES and RSA algorithms, and its complexity is so high that decipherment of data with no key is impossible. Such complexity creates basis for unbelievable effectuality of this kind of viruses in recent years: an ordinary PC operator, even if he has a pretty good knowledge of the computer, won't ever be able to restore the files, and will have no way out except paying the ransom. The sole method to decrypt the information is to find the scam site and retrieve the encryption keys. Sometimes it is possible to retrieve these keys via faults in the code of the virus itself.

The knowledge of computers is quite significant in our century, because it assists user to protect the system from hazardous programs. Unfortunately, most people see the importance of PC knowledge just when ransomware takes over their laptops. You easily can minimize the chances to get ransomware if you'll follow these regulations:

    • Do not admit any changes to the PC, coming from strange software. The most efficient way of information restoration is the recovery from Shadow Copies, and the creators of ransomware have added the removal of shadow copies into the primary functionality of ransomware. Anyway, deleting of copies requires administrator rights and acceptance from the operator. So, if you don't accept changes from a strange program at the right time, you will keep the way to decrypt all lost files for free.
    • Monitor the status of your workstation. It consumes a lot of computing resources to encode the information. If you notice a strange fall in system performance or see a weird string in the Process Manager, you can shut down the PC, start it in safe mode, and scan for viruses. Naturally, the certain amount of files will be corrupted, but you will protect the other part.
    • Be cautious with the e-mails which contain data. The #1 pattern of scam letters is the story about prize gaining or package receiving. You also should keep an eye on business correspondence, particularly if the sender and the content is unknown. It is natural to be interested and open the e-mail even if it's sent to the wrong address, but remember that one click on the attached file might cost you a lot of time, efforts and money.

Lokas uninstalling is not the happy end - it's just a first step on the long road until the complete file restoration. To recover the data you should read the tips in the next chapter of our entry. To get rid of Lokas, user has to load the computer in safe mode and run the scanning via AV-tool. High grade ransomware can't be removed even with help of AV-program, and have lots of serious mechanics of security. Some viruses can fully remove cyphered data, or part of it, when trying to uninstall the virus. To avoid this, follow the advices 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 deleting the ransomware from the machine, user has to recover the corrupted information. In fact, this is not literally decipherment, because the encrypting methods used by fraudsters are too complicated. There are the certain chances, but usually data restoration requires a lot of time and efforts. If you don't want to linger and are going to get back the data in manual mode - here's the complete article on data recovery.

To restore information, follow the article about files decryption.

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