What Is Hoop Virus
Hoop virus is the name of a nasty ransomware infection, whose main goal is to infect your PC and scan for and encrypt your important files. It belongs to a family of ransomware viruses, that are very widespread and go by the name “STOP/DJVU”. The main objective of this virus is to extort you via its ransom note file, called _readme.txt to pay a ransom in BitCoin to get the criminals to send you a unique decryption key. This key is to decode the files and remove the .Hoop file extension set after each file name by this malware.
Read this article to learn more information about Hoop ransomware and how to remove it effectively from your computer.

Hoop Virus Summary
Name | Hoop Virus, also known as UDS:Trojan.Win32.Chapak.gen, Ransom:Win32/StopCrypt.KM!MTB, Win32:PWSX-gen [Trj], Win32:PWSX-gen [Trj], A Variant Of Win32/GenKryptik.FHJB |
File Extension | .Hoop |
Type | Ransomware, Cryptovirus |
Short Description | The ransomware encrypts files on your computer system and demands a ransom to be paid to allegedly recover them. |
Symptoms | The Hoop Virus ransomware will encrypt your files by appending the .Hoop extension to them. |
Ransom Demanding Note | _readme.txt |
Distribution Method | Spam Emails, Email Attachments |
Detection Tool |
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Malware Removal Tool
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User Experience | Join Our Forum to Discuss Hoop. |
Hoop Virus – What We Know About It
The Hoop virus is similar to other variants of STOP ransomware, like Nooa virus, Paas virus and Aeur virus in the sense that it might enter your computer system via the same ways, which most likely are:
- If downloaded as a file from a third-party website.
- If it is an e-mail attachment.
If this malware has been sent to infect your computer via e-mail, it could pretend to be some legitimate and important document from the likes of:
- Invoices.
- E-receipts.
- Work-related files.
- Tickets.
And if you have infected your own device by downloading the file from some shady websites, then chances are this file may pretend to be one of the following kinds, according to victim reports on our YouTube channel comments:
- Keygen (key generator activators).
- Hoax setup.
- Portable app.
- Crack (activators).
- Patch.
Once the Hoop ransomware infects your computer system, it could begin to create various different types of files. Some of those files may be located in the following Windows directories:
- %Local%
- %AppData%
- %LocalLow%
- %Temp%
- %SystemDrive%
Among the malicious files dropped by Hoop virus on your computer is also the legitimate file _readme.txt. It serves as a ransom note that contains the message to contact the criminals and comply with their demands and hence pay the ransom in BitCoin:
The virus may also set registry values in your Windows Registry Editor that can be found in the following registry sub-keys:
- Run.
- RunOnce.
The outcome of this is that Hoop virus may run automatically on startup. These keys can be used to find where the main virus file that encrypts data is located.
.Hoop Files
This variant of STOP Ransomware may scan for and encrypt the following files on your computer system:
- Archives (.zip, .rar, etc).
- Image files (.jpg, .png, .etc).
- Document file types (.docx, .pptx, etc.).
- Audio (.mp3, .wav, etc.).
- Video files (.mp4, .avi, etc.).
- Other.
Then, the .Hoop virus may leave the files with its own file extension, appearing like the following example:
Example Picture.jpg.Hoop
Keep reading this article to see how to remove .Hoop virus and some alternative ways to recover your files.

Remove Hoop Virus and Try to Restore Files
If you want to try and restore your files, but the STOP Decryptor that is provided by experts does not help, then you are welcome to try the alternative methods for file recovery we have posted below. They are created with no 100% guarantee to be able to recover all your files, but with their aid you could be able to restore at least some of the affected files.
Attention! SensorsTechForum strongly recommends that all malware victims should look for assistance only by reputable sources. Many guides out there claim to offer free recovery and decryption for files encrypted by ransomware viruses. Be advised that some of them may only be after your money.
As a site that has been dedicated to providing free removal instructions for ransomware and malware since 2014, SensorsTechForum’s recommendation is to only pay attention to trustworthy sources.
How to recognize trustworthy sources:
- Always check "About Us" web page.
- Profile of the content creator.
- Make sure that real people are behind the site and not fake names and profiles.
- Verify Facebook, LinkedIn and Twitter personal profiles.
How to Remove Hoop from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove Hoop





Step 2: Uninstall Hoop and related software from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:



Step 3: Clean any registries, created by Hoop on your computer.
The usually targeted registries of Windows machines are the following:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
You can access them by opening the Windows registry editor and deleting any values, created by Hoop there. This can happen by following the steps underneath:



Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.
Step 4: Scan for Hoop with SpyHunter Anti-Malware Tool
Step 5 (Optional): Try to Restore Files Encrypted by Hoop.
Ransomware infections and Hoop aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
Simply click on the link and on the website menus on top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
Get rid of Hoop from Mac OS X.
Step 1: Uninstall Hoop and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- Go to Finder.
- In the search bar type the name of the app that you want to remove.
- Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
- If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove Hoop via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
You can repeat the same procedure with the following other Library directories:
→ ~/Library/LaunchAgents
/Library/LaunchDaemons
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 3 (Optional): Try to Restore Files Encrypted by Hoop.
Ransomware infections and Hoop aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
Simply click on the link and on the website menus on top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
Hoop FAQ
What is Hoop ransomware and how does it work?
Hoop is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files.
Many ransomware viruses use sophisticated encryption algorithm how to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.
How does Hoop ransomware infect my computer?
Via several ways.Hoop Ransomware infects computers by being sent via phishing e-mails, containing virus attachment.
This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.
After you download and execute this attachment, a drive-by download occurs and your computer is infected with the ransomware virus.
Another way, you may become a victim of Hoop is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.
How to open .Hoop files?
You can't. At this point the .Hoop files are encrypted. You can only open them once they are decrypted.
Decryptor did not decrypt my data. What now?
Do not panic and backup the files. If a decryptor did not decrypt your .Hoop files successfully, then do not despair, because this virus is still new.
One way to restore files, encrypted by Hoop ransomware is to use a decryptor for it. But since it's a new virus, advised that the decryption keys for it may not be out yet and available to the public. We will update this article and keep you posted as soon as this decryptor is released.
How Do I restore ".Hoop" files (Other Methods)?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Hoop files.
These methods are in no way 100% guarantee that you will be able to get your files back. But if you have a backup, your chances of success are much greater.
How do I get rid of Hoop ransomware virus?
The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti malware software. It will scan for and locate Hoop ransomware and then remove it without causing any additional harm to your important .Hoop files.
Also, keep in mind that viruses like Hoop ransomware also install Trojans and keyloggers that can steal your passwords and accounts. Scanning your computer with an anti-malware software will make sure that all of these virus components are removed and your computer is protected in the future.
What to Do If nothing works?
There is still a lot you can do. If none of the above methods seem to work for you, then try these methods:
- Try to find a safe computer from where you can can login on your own line accounts like One Drive, iDrive, Google Drive and so on.
- Try to contact your friends, relatives and other people so that they can check if they have some of your important photos or documents just in case you sent them.
- Also, check if some of the files that were encrypted it can be re-downloaded from the web.
- Another clever way to get back some of your files is to find another old computer, a flash drive or even a CD or a DVD where you may have saved your older documents. You might be surprised what will turn up.
- You can also go to your email account to check if you can send any attachments to other people. Usually what is sent the email is saved on your account and you can re-download it. But most importantly, make sure that this is done from a safe computer and make sure to remove the virus first.
More tips you can find on our forums, where you can also asks any questions about your ransomware problem.
How to Report Ransomware to Authorities?
In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer. Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:
Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:
- Germany - Offizielles Portal der deutschen Polizei
- United States - IC3 Internet Crime Complaint Centre
- United Kingdom - Action Fraud Police
- France - Ministère de l'Intérieur
- Italy - Polizia Di Stato
- Spain - Policía Nacional
- Netherlands - Politie
- Poland - Policja
- Portugal - Polícia Judiciária
- Greece - Cyber Crime Unit (Hellenic Police)
- India - Mumbai Police - CyberCrime Investigation Cell
- Australia - Australian High Tech Crime Center
Reports may be responded to in different timeframes, depending on your local authorities.