How to remove Qwex virus and restore Backdata @ files

Qwex ransomware virus

The article is about Qwex virus which gets onto users' systems around the world, and encrypts their data. In this item we've gathered complete info on Qwex's essence, and how to delete Qwex from the computer. Furthermore, we will teach you how to restore the corrupted information and is it possible.

Qwex ransomware already infected hundreds of computers around the world via easiest manner: scam messages with dangerous attachments. Sometimes web-criminals use exploits to infect the computer, but they are quickly corrected. When infection is done, the virus reviews the computer memory, defines the number of folders to be encrypted and their rough price. Currently, each modern virus knows how to encrypt image, text, audio and video information in all most used formats. Ransomware encrypts all folders, but the ones that look like business records go first. Qwex targets only information, and doesn't affect the programs, so that the victim can use the machine to pay the ransom. Encryption is carried out with the help of famous encryption algorithms, and it is so complicated that that it can't be bruteforced. This is the base for such an incredible success of this sort of viruses in last years: an ordinary customer, even if he has a pretty good experience in suchlike things, will never be able to get back the files, and will have no way out except paying to scammers. The sole method to get back files is to find the scam site and retrieve the encryption keys. Also there's a chance to get encryption keys through faults in the code of the virus itself. During the encryption, Qwex switches the extension of files to .Backdata @, and the amount of ransom is 500$-1500$.

The knowledge of computers is highly substantial in our century, as it helps customer to guard the machine from undesired software. It's sad to say, but most people realize the significance of PC literacy just after ransomware infection. To shield yourself, you have to keep in mind these few elementary regulations:

    • Carefully study your emails, specifically the messages that have files attached to them. The #1 model of fraud messages is the notification about prize winning or package earning. You also should be watchful with business correspondence, particularly if the sender and the content is unknown. It is OK to be interested and click on the letter even if it might be not for you, but don't forget that one click on the attached file might cost you a lot of money, efforts and time.
    • Keep an eye on the state of your workstation. It requires a lot of hardware power to encrypt the files. If you notice a strange decline in PC capacity or detect a weird process in the Process Manager, you should switch off the machine, load it in safe mode, and run the anti-malware. Naturally, the certain amount of information will be corrupted, but you will protect the rest of them.
    • Heed to the pop-ups. If the machine is polluted by virus, it will seek to remove all copies of the data, to make the recovery less possible. Anyway, deleting of copies requires admin rights and operator's verification. If you'll think for a moment before confirming the dialogue box, it may save your files and your money.

You should know that the deletion of ransomware is just a first and obligatory turn for the regular work of the workstation. To decrypt the data you'll have to familiarize with the tips in the below part of our entry. To deelete the ransomware, user has to start the machine at safe mode and scan it via antivirus. We do not recommend anyone to uninstall the virus in manual mode, because it has different protection features which will counteract you. Many malware can fully delete cyphered information, or some of it, when trying to delete the program. 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 malware from the PC, you should decrypt the encrypted information. It's impossible to reverse the encryption, but we'll restore them via Windows features and the additional software. Ordinarily, to recover the information, the victim has to seek support on targeted forums or from famous ransomware researchers and antiviral software vendors. If you can't wait and are willing to get back the data manually - here's the complete entry on that topic.

To restore information, follow the article about files decryption.

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