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.fucku Files Virus – How to Remove and Restore Encrypted Data

This article aims to help you by demonstrating how to remove the .fucku files ransomware virus from your computer system and how to restore the encoded files without actually having to pay the ransom to criminals.

A strange new virus, using both its payment e-mail and the .fucku file extension has been detected by cyber-criminals. The cyber-threat is from the file encryption type, meaning that after it infects your computer system, the virus encrypts your files, making them appear like they are broken. The malware then adds a ransom note, in which it demands $500 to be paid as in BTC to the cyber-criminals behind it and then they promise they will decode the files back to their working state. If you are one of the victims of the .fucku files virus, recommendations are that you read the following removal article in order to learn how to remove the .fucku files ransomware and try to restore the encrypted files without having to pay ransom.

Threat Summary

Name .fucku Ransomware
Type Ransomware, Cryptovirus
Short Description A file encryption virus. Aims to render your files seem broken by locking them and asks you to pay $500 in BTC in order to unlock them.
Symptoms Adds the .fucku file extension to the encrypted files shortly after this, drops a recover_your_fies.txt document, containing instructions on how to pay.
Distribution Method Spam Emails, Email Attachments, Executable files
Detection Tool See If Your System Has Been Affected by malware


Malware Removal Tool

User Experience Join Our Forum to Discuss .fucku Ransomware.
Data Recovery Tool Windows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

.fucku Files Virus – Distribution Methods

In order to infect the maximum amount of victims possible, the virus uses obfuscated file that may evade the real-time protection of some antivirus programs and the infection is performed with the aid of an infection file that is spread via multiple different methods, begging with spam e-mails as the most often used tactic. Such e-mails often pretend that the file which is attached is a legitimate:

  • Invoice.
  • Receipt.
  • Banking statement.
  • Order confirmation template.

The e-mails themselves often have convincing messages embedded within them that make it seem like they are coming from large international companies from the likes of FedEx, DHL and many others. One example can be seen from the image below:

In addition to via e-mail, the ransomware may also be spread via other types of files uploaded as legitimate ones, such as:

  • Fake torrent files.
  • System setups.
  • Game patches or cracks.
  • Software license activators, like fake KMS activators and others.

.fucku Files Virus – Malicious Activity

Upon infection, the .fucku files virus may drop files in multiple different Windows directories:

  • %AppData%
  • %Local%
  • %Roaming%
  • %LocalLow%
  • %Temp%

After having situated the malicious files on the computer of the victim, the malware may begin it’s malicious activity on the computer of the victim. For starters, the .fucku files virus may begin to create various different registry entries in the sub-keys. This may allow for the malware to run automatically during the Windows Boot Process. The usually targeted registry keys for this are the following:

→ HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

Among the activities of the .fucku files ransomware may also be to execute administrative Windows commands as an administrator in Windows. These are usually done to delete the shadow volume copies of your OS and disable system recovery. The commands are ran in the background and are as follows:

→ process call create “cmd.exe /c vssadmin.exe delete shadows /all /quiet & bcdedit.exe /set {default} recoveryenabled no & bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures”

The .fucku files virus also drops a ransom note, named recover_your_fies.txt, which has the following ransom demands, written in badly Russian and English:

AFTER PAYMENT SENT EMAIL nullforwarding@qualityservice.com

ПОСЛЕ ПЛАТЕЖА ОТПРАВЛЕНА EMAIL nullforwarding@qualityservice.com

In addition to this note, malware researcher Michael Gillespie has also detected the e-mail of the cyber-criminals nullforwarding@qualityservice.com to be associated with another ransom note, reported to be the following:

Text from image:

What happened to your files?
All of your important files have been encrypted with a powerful cryptography algorithm.
Attention: Don’t rename or edit encrypted files because it will be impossible to decrypt your files!

Step l: You must send us $506 worth of Bitocins for each affected PC OR $2069 worth of Bitocins to receive ALL Private Keys for ALL affected PCs.
Step 2: After you send us the coins. Email – nullforwardingfiqualityservice.com with your “Computer name.”
Example: My Computer name is: 001151
Step3: We will reply to your email with a link to the key & decryption software.

You should run it on your affected PC and all encrypted files will be recovered.
Our Bitcoin address: 13wNijcKiBEg8xZwHthcLZtRmrtyTBxDB
What is Bitcoin?

Bitcoin is an innovative payment network and a new kind of money.

You can create a Bitcoin account at https://blockchain.info/ and deposit some money into your account and then send to us.
How to buy Bitcoin?

.fucku Files Virus Encryption Process

For the encryption process, this ransomware virus may undertake in different activities, starting with scanning for the most widely used file types on your computer system, which are usually documents, images, videos, music, archives and other file types:


After the .fucku ransomware discovers the files, the virus may use encryption algorithm to encode the files and leave them unopenable, whilst generating a unique decryption key, which makes it possible for the malicious files to be unlocked after paying ransom. The files are also appended the following file extension:

Remove .fucku Files Virus and Restore Encrypted Data

For the removal process of this ransomware, you should isolate the malware files first after which focus on the removal process itself. To do this either manually or automatically we strongly advise you to follow the removal instructions which we have created underneath this article. If you lack the experience in manual removal, be advised that security professionals often recommend using an advanced anti-malware software in order to perform the removal process automatically by scanning for those files using a .fucku file ransomware – specific removal software. Using such anti-malware program will also make sure that your computer is protected against future intrusions on your computer as well.

Ventsislav Krastev

Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.

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Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

How to Remove .fucku Ransomware from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove .fucku Ransomware


Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows key() + R

2. The "Run" Window will appear. In it, type "msconfig" and click OK.

3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".
Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.

4. When prompted, click on "Restart" to go into Safe Mode.

5. You can recognise Safe Mode by the words written on the corners of your screen.

Step 2: Uninstall .fucku Ransomware 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:

1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.

2. In the field type in "appwiz.cpl" and press ENTER.

3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"
Follow the instructions above and you will successfully uninstall most programs.

Step 3: Clean any registries, created by .fucku Ransomware 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 .fucku Ransomware there. This can happen by following the steps underneath:

1. Open the Run Window again, type "regedit" and click OK.

2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.

3. You can remove the value of the virus by right-clicking on it and removing it.
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

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 .fucku Ransomware with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.

It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.

2. After you have installed SpyHunter, wait for it to update automatically.


3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.


4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.


If any threats have been removed, it is highly recommended to restart your PC.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Get rid of .fucku Ransomware from Mac OS X.

Step 1: Uninstall .fucku Ransomware and remove related files and objects

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with SpyHunter for Mac
Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy

1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:

2. Find Activity Monitor and double-click it:

3. In the Activity Monitor look for any suspicious processes, belonging or related to .fucku Ransomware:

Tip: To quit a process completely, choose the “Force Quit” option.

4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.

5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to .fucku Ransomware. If you find it, right-click on the app and select “Move to Trash”.

6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to .fucku Ransomware. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.

7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

  • 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 .fucku Ransomware 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:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as .fucku Ransomware. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents

Tip: ~ is there on purpose, because it leads to more LaunchAgents.

Step 2: Scan for and remove .fucku Ransomware files from your Mac

When you are facing problems on your Mac as a result of unwanted scripts and programs such as .fucku Ransomware, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.

Click the button below below to download SpyHunter for Mac and scan for .fucku Ransomware:


SpyHunter for Mac

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Remove .fucku Ransomware from Google Chrome.

Step 1: Start Google Chrome and open the drop menu

Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"

Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.

Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Erase .fucku Ransomware from Mozilla Firefox.

Step 1: Start Mozilla Firefox. Open the menu window

Step 2: Select the "Add-ons" icon from the menu.

Step 3: Select the unwanted extension and click "Remove"

Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Uninstall .fucku Ransomware from Microsoft Edge.

Step 1: Start Edge browser.

Step 2: Open the drop menu by clicking on the icon at the top right corner.

Step 3: From the drop menu select "Extensions".

Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.

Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Remove .fucku Ransomware from Safari.

Step 1: Start the Safari app.

Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.

Step 3: From the menu, click on "Preferences".

stf-safari preferences

Step 4: After that, select the 'Extensions' Tab.


Step 5: Click once on the extension you want to remove.

Step 6: Click 'Uninstall'.

stf-safari uninstall

A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the .fucku Ransomware will be removed.

How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Eliminate .fucku Ransomware from Internet Explorer.

Step 1: Start Internet Explorer.

Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'

Step 3: In the 'Manage Add-ons' window.

Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.

Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.

Remove Push Notifications caused by .fucku Ransomware from Your Browsers.

Turn Off Push Notifications from Google Chrome

To disable any Push Notices from Google Chrome browser, please follow the steps below:

Step 1: Go to Settings in Chrome.


Step 2: In Settings, select “Advanced Settings”:

advanced settings

Step 3: Click “Content Settings”:

Content Settings

Step 4: Open “Notifications”:


Step 5: Click the three dots and choose Block, Edit or Remove options:

Block, Edit or Remove

Remove Push Notifications on Firefox

Step 1: Go to Firefox Options.


Step 2: Go to “Settings”, type “notifications” in the search bar and click "Settings":


Step 3: Click “Remove” on any site you wish notifications gone and click “Save Changes”

remove push notifications firefox

Stop Push Notifications on Opera

Step 1: In Opera, press ALT+P to go to Settings


Step 2: In Setting search, type “Content” to go to Content Settings.

content settings

Step 3: Open Notifications:


Step 4: Do the same as you did with Google Chrome (explained below):

three dots

Eliminate Push Notifications on Safari

Step 1: Open Safari Preferences.


Step 2: Choose the domain from where you like push pop-ups gone and change to "Deny" from "Allow".

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