Danger level:  
  (98/100)

Thor ransomware virus. How to delete? (Removal tutorial)

removal by Olivia Morelli - - | Type: Ransomware
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Thor ransomware – another version of the Locky virus

Thor virus is the newest version of famous Locky virus that has been causing problems for computer users since the beginning of the year. Recently, we have talked about other versions of this ransomware – Zepto, Odin and Shit viruses. Now it’s time to announce the latest malware version. Thor ransomware spreads via malicious spam emails and is activated when the victim opens an infected file. The virus is capable of encoding more than 400 different types of files using combined AES-128 and RSA-2048 ciphers. During data encryption virus changes filenames and appends .thor file extension to all corrupted files. Since then, victims cannot access their personal data, and what is worse, they might not be able to use it ever again. Unfortunately, virus researchers haven’t managed to crack any version of Locky virus, so there’s no decryption tool created yet. At the moment there’s only one risk-free solution to restore data – to use backup copies. Indeed, the creators of ransomware always offer to pay the ransom and get back your files. However, we believe it’s just a waste of money. Instead of reaching for your credit card, start Thor removal.

Hackers inform about Thor ransomware attack by delivering two scary messages in _WHAT_is.bmp and _WHAT_is.html files. After successful data encryption, the .bmp file becomes new background picture which tells about ransomware attack and encourages opening .html file. The ransom note includes unique victim’s ID, necessary information for data encryption and how to purchase file decryption tool. Hackers explain that there’s no other possibility to get back access to the corrupted files, just transferring 0.5 Bitcoins via Tor browser and using Locky Decryptor. They briefly explain what tools are needed for paying the ransom and how to use them. No matter how helpful they are, do not follow their instructions. Paying the ransom does not guarantee that hackers provide you a necessary key for data decryption. Therefore, you might lose both – your files and money. We strongly recommend spending your money on more valuable services. Remove Thor from the computer using Reimage or other reputable anti-malware program.

The example of Thor virus

Malware distribution techniques

The authors of Thor malware use the same three distribution methods: malicious spam campaigns, exploit kits, and malware-laden ads. Cyber criminals already know that the most efficient and successful way to infect computers is to send a malicious attachment via email. In this case, the virus usually arrives in .zip file that includes malicious files. The content of the email tricks users that it is an important document and they open it without any suspicion. It’s already known that infected email message a subject line ‘Budget forecast’. However, there are hundreds or even thousands of different spam campaigns where criminals pretend to be from financial institutions, governmental organizations and other reliable companies.

Besides, Thor virus might infiltrate computer’s system when the user clicks on a malware-laden advertisement. Usually, these ads offer software downloads or updates, and sometimes they warn about various computer issues and offers to fix them. Lastly, the virus might spread with a help of exploit kit, so it’s important to keep all your programs updated. Additionally, you should install strong security program and watch your steps online. You have to be careful because malware is lurking in every dark corner of the Internet.

Thor removal methods

To remove Thor from the computer, you have to employ strong and reputable anti-malware program. Cheap or free utilities won’t be able to complete the task. They are simply weak. For ransomware elimination we recommend using one of these programs: Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware. If already use a strong antivirus program, you have to update it. Sometimes malware blocks access to security tools; in this case, follow the step-by-step guide presented below. After Thor removal, you will be able to retrieve corrupted files from backups. However, if you have never made backup copies, probably you learned your lesson the hard way. In this case, you can try to recover at least some of your files from backups.

After Thor removal, you will be able to retrieve corrupted files from backups. However, if you have never made backup copies, probably you learned your lesson the hard way. In this case, you can try to recover at least some of your files from backups.

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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.
Computer security experts recommend using Reimage to uninstall Thor ransomware virus. Reimage scans the entire computer system and checks whether it is infected with spyware/malware or not. If you want to remove computer threats and secure your computer system, you should consider buying the licensed version of Reimage.

You can find more details about this program in Reimage review.

You can find more details about this program in Reimage review.
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Press mentions on Reimage

Manual Thor Virus Removal Instructions:

Eliminate Thor using Safe Mode with Networking

You can detect malware using Reimage.
You need to purchase a licensed version of it to remove threats.
More details about Reimage.

  • Step 1: Restart your computer in Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Go to Start Shutdown Restart OK.
    2. As soon as your computer starts, start pressing F8 key repeatedly before the Windows logo shows up.
    3. Choose Safe Mode with Networking from the list Choose 'Safe Mode with Networking' option

    Windows 10 / Windows 8
    1. Click on the Power button at the Windows login screen, and then press and hold Shift key on your keyboard. Then click Restart.
    2. Then select Troubleshoot Advanced options Startup Settings and click Restart.
    3. Once your computer starts, select Enable Safe Mode with Networking from the list of options in Startup Settings. Choose 'Enable Safe Mode with Networking' option
  • Step 2: Remove Thor

    Sign in to your account and launch any Internet browser. Download a legitimate anti-malware software, for instance, Reimage. Make sure you update it to the latest version and then run a full system scan with it to detect and eliminate all malicious components of the ransomware to remove Thor completely.

If your ransomware does not allow you to access Safe Mode with Networking, please follow the instructions provided below.

Eliminate Thor using System Restore

You can detect malware using Reimage.
You need to purchase a licensed version of it to remove threats.
More details about Reimage.

  • Step 1: Restart your computer in Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Go to Start Shutdown Restart OK.
    2. As soon as your computer starts, start pressing F8 key repeatedly before the Windows logo shows up.
    3. Choose Command Prompt from the list Choose 'Safe Mode with Command Prompt' option

    Windows 10 / Windows 8
    1. Click on the Power button at the Windows login screen, and then press and hold Shift key on your keyboard. Then click Restart.
    2. Then select Troubleshoot Advanced options Startup Settings and click Restart.
    3. Once your computer starts, select Enable Safe Mode with Command Prompt from the list of options in Startup Settings. Choose 'Enable Safe Mode with Command Prompt' option
  • Step 2: Perform a system restore to recover files and settings
    1. When the Command Prompt window appears, type in cd restore and press Enter. Type 'cd restore' without quotes and hit 'Enter'
    2. Then type rstrui.exe and hit Enter.. Type 'rstrui.exe' without quotes and hit 'Enter'
    3. In a new window that shows up, click the Next button and choose a restore point that was created before the infiltration of Thor and then click on the Next button again. When 'System Restore' wizard comes up, click 'Next'. Choose a preferable restore point and click 'Next'
    4. To start system restore, click Yes. Hit 'Yes' and start system restore
    After restoring the computer system to an antecedent date, install and check your computer with Reimage to uncover any remains of Thor.

Bonus: Restore your files

Using the tutorial provided above you should be able to eliminate Thor from the infected device. novirus.uk team has also prepared an in-depth data recovery guide which you will also find above.

Even though hackers try to convince victims to purchase a decryption key, do not risk your money! After Thor removal, you can restore files from data backups. All you have to do is to plug in the external device with your files to the computer and copy them. However, if you do not have backup copies, check additional methods described below.

There are a couple of methods you can apply to recover data encrypted by Thor:

Restore data with Data Recovery Pro

This tool is not created for restoring files encoded by ransomware. Though, you should give it a try. Follow the steps below:

  • Download Data Recovery Pro (https://novirus.uk/download/data-recovery-pro-setup.exe);
  • Install Data Recovery on your computer following the steps indicated in the software’s Setup;
  • Run the program to scan your device for the data encrypted by Thor ransomware;
  • Recover the data.

It is strongly recommended to take precautions and secure your computer from malware attacks. To protect your PC from Thor and other dangerous viruses, you should install and keep a powerful malware removal tool, for instance, Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware.

About the author

Olivia Morelli
Olivia Morelli

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Source: https://www.2-spyware.com/remove-thor-ransomware-virus.html

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