Delete Cryptovirus

What is Cryptovirus

Qbx is a new virus that infects computers through Remote Desktop or malicious spam emails. This virus can potentially cost a person their all files. The criminals behind Qbx ask for thousands of dollars to restore the files they encrypted, but it’s never guaranteed that they’ll actually keep to their word and restore the locked files once the encryption is paid.

Qbx is a member of Dharma/CrySiS, a ransomware strain that has existed for years and spawned viruses like Arena, Arrow, and Dharma. And though Dharma has had its decryption keys leaked online, most versions of Dharma/CrySiS, including Qbx, don’t have free decryptors available.

Delete Cryptovirus

What happened to the files?

File encryption can be used to lock files from people who do not have the password. An encrypted file can be seen, viewed, known about, but the information within cannot be extracted — the contents of an encrypted file look like gibberish. A password or a decryption key is needed to see the real contents of the file. Editing an encrypted file might just lead to irreversible damage. Qbx encrypts files similarly, but with the malicious goal of making money from victims desperate to get access to their own files.

Download Removal Toolto remove Cryptovirus

The encryption algorithms used by Qbx include public-key cryptography, which ensures that the decryption is only in the hands of Qbx’s developers. No free decryption for Qbx is possible at the moment, and most paid decryption services would likely just contact the criminals behind Qbx to buy the decryptor. The decryption keys are unique to each victim and so one person buying them from the extortionists does nothing to help any other victims of Qbx.

How does Qbx spread?

Both businesses and individuals are vulnerable, but the people behind Qbx target businesses specifically. Businesses have a few things that make them attractive to Qbx’s developers: Money to pay the ransom. Valuable time that cannot be wasted searching for solutions. Valuable data that they cannot afford to lose. Thus, Qbx developers can take aim at businesses and charge thousands of dollars (usually, no less than 1 Bitcoin) for restoring the broken files and expect a good chance that they’ll actually be paid.

One of the ways that Qbx spreads is through Remote Desktop Protocol. The cybercriminals connect to a network and install the Cryptovirus and whatever other malware they want to infect computers with, like software to disable antivirus programs. Qbx developers are able to hack Remote Desktop connections by guessing or finding the login credentials. If the login credentials are weak, or if the criminals managed to steal someone’s passwords (possibly by using phishing), they are then able to abuse the Remote Desktop to do whatever they want. Qbx can also be spread using malicious emails: infected links and attachments might carry the Qbx virus in them, and simply running the malicious file would be enough for Qbx to start the encryption process. Qbx can arrive disguised as innocent documents, important archives, or updates of reputable software. Spam emails can easily affect individuals, not just businesses.

Download Removal Toolto remove Cryptovirus

It’s not certain how likely the criminals behind Qbx are to restore the files if they get the ransom. The behavior of the people behind Qbx is not yet known because some versions of Dharma have different distributors and while some of them are “fair†and restore the files, others take the money from their victims and then ignore them.

Qbx details

Once Qbx infects a computer and encrypts the files (encrypted files include pictures, documents and spreadsheets, databases, code, other files), it creates a ransom note and a document with instructions on how to contact the extortionists. The names of the ransom notes are RETURN FILES.txt (a short little note that includes — the email address that the extortionists use) and INFO.HTA, a more detailed explanation that includes phrases like “ALL YOUR FILES HAVE BEEN ENCRYPTED!!! IF YOU WANT TO RESTORE THEM, WRITE US TO THE E-MAIL btcdecoding@qq.comâ€.

The names of the Qbx-encrypted files likewise include the email address of the cybercriminals: How to remove the Qbx virus Qbx can be removed using a strong antivirus program, like Anti-Malware Tool or Anti-Malware Tool. It’s likely that Qbx brought with it other malware, and all of it should be removed before restoring the files.

The files can be restored from a backup if it exists. Backups should regularly be updated to include the newest files, as well as kept separate from the computers whose files are being backed. If the backups were stored on the same computer that was infected with Qbx, they’ll either be deleted or encrypted. But there are some ways to try to recover the lost files, like using data recovery (check the guide below).

Stage 1: Delete Browser Extension

First of all, we would recommend that you check your browser extensions and remove any that are linked to Cryptovirus. A lot of adware and other unwanted programs use browser extensions in order to hijacker internet applications.

Remove Cryptovirus Extension from Google Chrome

  1. Launch Google Chrome.
  2. In the address bar, type: chrome://extensions/ and press Enter.
  3. Look for Cryptovirus or anything related to it, and once you find it, press ‘Remove’.

Uninstall Cryptovirus Extension from Firefox

  1. Launch Mozilla Firefox.
  2. In the address bar, type: about:addons and press Enter.
  3. From the menu on the left, choose Extensions.
  4. Look for Cryptovirus or anything related to it, and once you find it, press ‘Remove’.

Delete Cryptovirus Extension from Safari

  1. Launch Safari.
  2. Press on the Safari Settings icon, which you can find in the upper-right corner.
  3. Select Preferences from the list.
  4. Choose the Extensions tab.
  5. Look for Cryptovirus or anything related to it, and once you find it, press ‘Uninstall’.
  6. Additionally, open Safari Settings again and choose Downloads.
  7. If Cryptovirus.safariextz appears on the list, select it and press ‘Clear’.

Remove Cryptovirus Add-ons from Internet Explorer

  1. Launch Internet Explorer.
  2. From the menu at the top, select Tools and then press Manage add-ons.
  3. Look for Cryptovirus or anything related to it, and once you find it, press ‘Remove’.
  4. Reopen Internet Explorer.In the unlikely scenario that Cryptovirus is still on your browser, follow the additional instructions below.
  5. Press Windows Key + R, type appwiz.cpl and press Enter
  6. The Program and Features window will open where you should be able to find the Cryptovirus program.
  7. Select Cryptovirus or any other recently installed unwanted entry and press ‘Uninstall/Change’.

Alternative method to clear the browser from Cryptovirus

There may be cases when adware or PUPs cannot be removed by simply deleting extensions or codes. In those situations, it is necessary to reset the browser to default configuration. In you notice that even after getting rid of weird extensions the infection is still present, follow the below instructions.

Use Chrome Clean Up Tool to Delete Cryptovirus

  1. Launch Google Chrome.
  2. In the address box, type: chrome://settings/ and press Enter.
  3. Expand Advanced settings, which you can find by scrolling down.
  4. Scroll down until you see Reset and Cleanup.
  5. Press on Clean up computer. Then press Find.

This Google Chrome feature is supposed to clear the computer of any harmful software. If it does not detect Cryptovirus, go back to the Clean up computer and reset settings.

Download Removal Toolto remove Cryptovirus

Reset Mozilla Firefox to Default

If you still find Cryptovirus in your Mozilla Firefox browser, you should be able to get rid of it by restoring your Firefox settings to default. While extensions and plug-ins will be deleted, this will not touch your browser history, bookmarks, saved passwords or Internet cookies.

  1. Launch Mozilla Firefox
  2. Into the address box, type: about:support and press Enter.
  3. You will be redirected to a Troubleshooting Information page.
  4. From the menu on the right side, select Refresh Firefox.
  5. Confirm your choice by clicking Refresh Firefox in the new window.
  6. Your browser will close automatically in order to successfully restore the settings.
  7. Press Finish.

Reset Safari Browser to Normal Settings

  1. Launch Safari.
  2. Press on the Safari Settings icon, which you can find in the upper-right corner.
  3. Press Reset Safari.
  4. A new window will appear. Select the boxes of what you want to reset or use the screenshot below to guide you. Once you have selected everything, press ‘Reset’.
  5. Restart Safari.

Restore Internet Explorer to Default Settings

  1. Launch Internet Explorer.
  2. From the top menu, press on Tools and then Internet Options.
  3. In the new window that opens, choose the Advanced tab.
  4. At the bottom of the window, below Reset Internet settings, there will be a ‘Reset’ button. Press that.

While extensions and plug-ins will be deleted, this will not touch your browser history, bookmarks, saved passwords or Internet cookies.

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