How to remove Corona-lock virus and restore encrypted files

Guide how to delete Corona-lock ransomware virus and decrypt files corrupted by ransomware. Effective antivirus and programs that can restore lost information.

Corona-lock ransomware virus

Corona-lock ransomware had infected many computers in different parts of the world through easiest way: fraud messages with dangerous attachments. Also, scammers use exploits to penetrate the PC, but major program vendors promptly fix them. When infection takes place, ransomware checks the hard drive to find the files to be cyphered and their rough cost. Currently, each modern ransomware knows how to cypher image, video, audio and text info in all popular formats. Virus encrypts all files, but those that could be business records go first. All programs in the system will be safe because fraudsters are interested only in information. The operation is performed through well-known encryption algorithms, and it is so complicated that that it cannot be bruteforced. Such complexity creates basis for unbelievable efficiency of this kind of viruses in recent years: common user, even having a pretty high experience in suchlike things, won't ever be able to restore the data, and will have no way out except paying the ransom. The single manner to recover files is to crack the fraudster's website and retrieve the master key. Some skilled malware specialists can get encryption keys via faults in the code of the virus itself.

This article is about ransomware called Corona-lock that penetrates customers' machines around the world, and cyphers the files. Here we've assembled complete information about Corona-lock's essence, and how to get rid of Corona-lock from the computer. Besides, we'll tell you how to get back the encrypted files and is it possible.

There is one common feature for all sorts of ransomware: it is much simpler to dodge it than to neutralize its fruits. For encrypting viruses it's most important, as, unlike normal unwanted software, when you eliminate ransomware from the computer, the consequences of its actions will stay. You easily can minimize the chances to get ransomware if you'll follow these principles:

    • Attentively examine your e-mails, particularly those messages that have attached files. If you don't know who send the letter and it tells about earning some prize, a lost package or anything like that, this is most likely ransomware. The #2 effective type of these messages is a forgery for biz correspondence. It is natural to take an interest and click on the e-mail even if it's sent to the improper address, but don't forget that one click on the viral file might cost you lots of money, efforts and time.
    • Do not admit any changes to the system, coming from unknown software. The easiest way of file recovery is the recovery via Shadow Copies, and fraudsters have added the deletion of those copies into the basic functionality of viruses. The deletion of copies requires administrator rights and your verification. The moment of thought before confirming the changes can save your files and your time.
    • Do not ignore the symptoms that your machine displays. It consumes a lot of CPU power to encode the files. When the malware starts to operate, the CPU speed decreases, and the encrypting process emerges in Process Manager. You might catch this moment and shut down the workstation before files will be completely encrypted. Naturally, some files will be encrypted, but the other part of them will be safe.

You should know that the elimination of Corona-lock is only the first and obligatory move for the regular operation of the system. If you delete malware, you won't recover the files immediately, it will take more actions described in the "How to restore encrypted files" part. To uninstall any malware, user has to load the workstation at safe mode and scan it via antivirus. Some ransomware can't be removed even through AV-tool, and have many serious mechanisms of security. The most effective viral defensive manner is the deletion of data in case of file decryption or Corona-lock removal attempt. To neutralize this, follow 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

Startup

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 fulfilled all conditions, described in previous paragraph - it's time to recover the data. Actually, this is not about decipherment, because the encrypting methods owned by web-criminals are extremely complicated. There are the few exceptions, but generally data recovery requires plenty of time and efforts. If you don't want to wait and are willing to restore the data in manual mode - here's the useful entry on that topic.

To restore information, follow the article about files decryption.

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