Czech ransomware virus. How to remove? (Uninstall guide)

removal by Olivia Morelli - - | Type: Ransomware
12

Can Czech ransomware damage my personal files?

Czech ransomware virus is a hideous computer infection that tries to extort money from unfortunate victims. Some researchers tend to name it Czech Kostya virus. Once it hits a computer, it locks the screen by displaying a window that says “All your files have been locked” in the Czech language. The lock screen[1] window provides some information about the virus and claims that files have been ciphered with AES-256 encryption[2] although, in reality, the virus doesn’t encrypt anything. It simply blocks the access to the computer and tries to intimidate the victim to force him/her pay the ransom[3]. The initial ransom that this virus asks for is 300 CZK, which is more or less 12 dollars. The virus asks to pay the ransom within 24 hours; otherwise, it promises to increase the ransom price to 2000 CZK (approximately $80) and delete 60% of all files as well.

Although the ransom price appears to be ridiculously small (considering that viruses like Cerber or Locky ask for at least $500 and more[4]), you should not pay the ransom. Czech virus that pretends to be a severe ransomware actually does nothing to data stored on your computer and only displays an annoying window that can be removed rather easily. You simply need to run your antivirus or anti-malware software to remove Czech malware completely. We highly recommend using Reimage or Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus software. The reason why we do not recommend manual Czech ransomware removal option is that inexperienced users can quickly delete the wrong files, which might result in system’s instability and other problems.

Picture of Czech ransomware screenlocker

How did I get infected with this malicious software?

Malicious software mainly travels via email attachments[5], hideous links or bundled downloads, so be aware of these distribution channels. Don’t ever agree to install suspicious files or programs on your system if you are not 100% sure that they are safe! For example, infectious websites often tend to push fake software updates (for instance, Java updates) via aggressive pop-up ads. Unless you are visiting the official software developer’s website, do not install it! Fake software updates are often used as a tool to inject malicious files to victim’s system silently. Finally, avoid email letters that suspicious people send to you. Remember that scammers will pretend to be anyone just to deceive you and convince you to open a malicious email attachment or link. And to sum up, you should be using a reliable anti-malware software to keep malicious programs away from your PC.

How can I remove Czech ransomware virus and get access to my computer again?

If you have been attacked by Czech virus by accident, do not panic. You can remove Czech ransomware rather easily and get access to your files again – just make sure you do the right things. First of all, you will need to reload your computer, but not the way you do it on a regular basis. You will need to reboot in into the Safe Mode with Networking, and if you have never done this before, please read the following Czech virus removal guidelines and carry them out carefully. Once you’re in the safe environment to do anything with your PC, run your anti-malware software to wipe the virus’ remains from your PC. If you do not have the anti-malware software, download it from the Internet while in the Safe Mode with Networking.

 

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall Czech ransomware virus. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.

More information about this program can be found in Reimage review.

More information about this program can be found in Reimage review.

Manual Czech virus Removal Guide:

Remove Czech using Safe Mode with Networking

Reimage is a tool to detect malware.
You need to purchase Full version to remove infections.
More information about Reimage.

Please do not underestimate the menace of this virus just because it has been programmed by a script kiddie. It is clear that the developer of this virus is not an experienced programmer, and you should take advantage of it. Please do not rush not to mess things up, and carry out these instructions carefully!

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Czech

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Czech removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove Czech using System Restore

Reimage is a tool to detect malware.
You need to purchase Full version to remove infections.
More information about Reimage.

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Czech. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that Czech removal is performed successfully.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Czech and other ransomwares, use a reputable anti-spyware, such as Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware

About the author

Olivia Morelli
Olivia Morelli - Ransomware analyst

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References


  • lara

    what…. i dont even speak czech… how did it get on my computer, please explain???

    • Gradients

      well you probably viewed some czech website and maybe it was compromised. or you opened a malicious email… do you live in Czech Republic, maybe?

      • lara

        umm no! Thats why it is so suspicious! Thanks god it didnt encrypt anything… Im just worried. I have antivirus but it didnt defend me from this particular virus, although it stopped many malware attacks before..

        • Gradients

          well maybe you didnt update your security software on time… that might be the case