Cuba Ransomware

Cuba Ransomware

Cuba Ransomware is a file-encrypting version of a ransomware infection that can attack computers without showing visible symptoms. The ultimate goal of Cuba Ransomware is to render a list of user files inaccessible so that it can ask the owners for ransom.

Cuba Ransomware

The Cuba Ransomware Ransom Note

Basically, the way this infection operates revolves around a classic blackmail scheme where the files of the victims are held hostage in exchange for some money. Typically, Cuba Ransomware targets commonly used files that are considered of great value such as documents, databases, archives, images, videos, etc. so that once they become encrypted with its secret algorithm, the victims won’t be able to access them with any software unless they apply a special decryption key. This decryption key is precisely what the hackers behind the ransomware virus ask a ransom for and they promise to send it only to those users who agree to fulfill all their demands.

However, it is still questionable whether they will actually send you a key once you have paid them. It would certainly not be unexpected for the hackers to disappear with the money without providing you with a key. After all, the moment they get what they want, they would be least bothered to deal with you and your encrypted files. Moreover, even if they send you something in exchange for your money, there is no guarantee that this will be precisely the key that will successfully decrypt your files.

In this line of thinking, trying to resolve the ransomware problem by means of alternative actions is a much better idea. In fact, it is essential to remove Cuba Ransomware from your computer if you want to be able to use it and potentially recover some of  your files on it. Otherwise, if the file-encrypting virus is present in the system, it will continue to encrypt any new file that you create or manage to restore. That’s why, at the end of this article, we have published a detailed removal guide to help you locate and eliminate the ransomware in a quick and effective manner. We have also included as section with free method for file recovery which you can try out.

The Cuba Ransomware virus

The Cuba Ransomware virus is a piece of malware of the ransomware type that can operate under the radar of  most antivirus programs. The cryptography used by the Cuba Ransomware virus is not harmful and thus antivirus programs typically don’t do anything to disable it or notify you about the encryption process.

In addition, some more advanced versions of ransomware can even disable your antivirus program to ensure it won’t interfere with their file encrypting process. This, along with the complexity of the encryption code, has greatly helped make ransomware the most dangerous type of malware. That’s why the best way to stay protected is to rely on prevention particularly by keeping away from possible transmitters of such infections and sketchy web content such as spam messages, fake online advertisements or cracked software installers. What is even more important, though, is to create backups of your data on a remote disk or cloud server so that you never have to experience data loss or restricted access.

The Cuba Ransomware file extension

The Cuba Ransomware file extension is an odd suffix that ensures the encrypted files cannot be recognized by any software. The Cuba Ransomware file extension replaces the original file extension and is attached at the end of each encrypted file name.

Cuba Ransomware

The Cuba Ransomware encrypted files


Name Cuba Ransomware
Type Ransomware
Danger Level High (Ransomware is by far the worst threat you can encounter)
Symptoms Very few and unnoticeable ones before the ransom notification comes up.
Distribution Method From fake ads and fake system requests to spam emails and contagious web pages.
Data Recovery Tool Not Available
Detection Tool

Remove Cuba Ransomware

Cuba Ransomware

Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).

Cuba Ransomware


Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab. Try to determine which processes are dangerous.

Cuba Ransomware

Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
This scanner is free and will always remain free for our website's users.
This file is not matched with any known malware in the database. You can either do a full real-time scan of the file or skip it to upload a new file. Doing a full scan with 64 antivirus programs can take up to 3-4 minutes per file.
Cuba Ransomware
Drag and Drop File Here To Scan
Cuba Ransomware
Analyzing 0 s
Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
    This scanner is based on VirusTotal's API. By submitting data to it, you agree to their Terms of Service and Privacy Policy, and to the sharing of your sample submission with the security community. Please do not submit files with personal information if you do not want them to be shared.

    After you open their folder, end the processes that are infected, then delete their folders.

    Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections.

    Cuba Ransomware

    Hold the Start Key and R copy + paste the following and click OK:

    notepad %windir%/system32/Drivers/etc/hosts

    A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

    Cuba Ransomware

    If there are suspicious IPs below “Localhost” – write to us in the comments.

    Type msconfig in the search field and hit enter. A window will pop-up:

    Cuba Ransomware

    Go in Startup —> Uncheck entries that have “Unknown” as Manufacturer.

    • Please note that ransomware may even include a fake Manufacturer name to its process. Make sure you check out every process here is legitimate.

    Cuba Ransomware

    Type Regedit in the windows search field and press Enter. Once inside, press CTRL and F together and type the virus’s Name.

    Search for the ransomware in your registries and delete the entries. Be extremely careful – you can damage your system if you delete entries not related to the ransomware.

    Type each of the following in the Windows Search Field:

    1. %AppData%
    2. %LocalAppData%
    3. %ProgramData%
    4. %WinDir%
    5. %Temp%

    Delete everything in Temp. The rest just check out for anything recently added. Remember to leave us a comment if you run into any trouble!

    Cuba Ransomware

    How to Decrypt Cuba Ransomware files

    We have a comprehensive (and daily updated) guide on how to decrypt your files. Check it out here.

    If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!


    About the author


    Lidia Howler

    Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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