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Lock75 (Fluffy) File Virus Restore Files

Article, designed to help you remove Fluffy-TAR ransomware and hopefully get back files encrypted with the lock75 extension added to them.

A ransomware virus, using the lock75 extension appended immediately after the names of the encrypted files has been detected. The virus is named Fluffy-TAR ransomware and uses the strongest AES cipher possible, the AES-256 to encrypt files on the computers infected by it. After the encryption, the Fluffy virus drops a well-designed ransom note which demands from victims to pay the sum of 0,039 BTC in order for the cyber-criminals behind it to get the files back. In case your computer has been infected by the Fluffy ransomware, recommendations are to read this article carefully.

Threat Summary


Lock75 Virus

Type Ransomware
Short Description The malware encrypts users files using the AES-256 encryption cipher, making direct decryption possible only via a unique symmetric decryption key available to the cyber-criminals.
Symptoms The user may witness ransom notes and “instructions” screen, asking to pay approximately 0,039 BTC. Changed file names and the file-extension lock75 has been used.
Distribution Method Via an Exploit kit, Dll file attack, malicious JavaScript or a drive-by download of the malware itself in an obfuscated manner.
Detection Tool See If Your System Has Been Affected by malware


Malware Removal Tool

User Experience Join our forum to Discuss Lock75 Virus.
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.

Fluffy lock75 Virus – How Does It Infect

The distribution process of Fluffy ransomware may be performed by utilizing spam e-mail messages to infect user PC’s. Usually such messages are sent via spamming software and spam kits that contain a pre-configured list of victims’ e-mail addresses. The spam messages usually contain deceitful e-mail message within them that aims to lure users into either clicking on a web link or opening the attachment, similar to the example image below:


Such convincing statements may sometimes even include information about your account, such as your name, address and so on. This information is usually gathered from websites to which many victims have registered and left their personal information. Those websites if compromised can reveal multiple different details about users, making them potential victims to Fluffy ransomware’s distributers.

Other forms of spreading this infection is if fake installers of programs, game activation software, license removers and other fake executables may be used on torrent websites via compromised accounts and downloaded by the victim. Also such may be published in suspicious websites or linked towards the user PC as a result of having a PUP (Potentially Unwanted Program) installed on your computer.

Fluffy Ransomware – Infection Activity

Once Fluffy ransomware has already infected a given computer, the virus may use exploits to drop it’s malicious files while remaining undetected on the victim’s computer. Once this has been done, the Fluffy ransomware infection may begin to connect to the following hosts:

  • – Romanian
  • – Swedish

From these hosts, the malicious files of the Fluffy virus may be downloaded onto the computer of the victim. These files may consist of a malicious executable and an image, named as the following:

  • Fluffy.exe
  • Fluffy.png

Along with these malicious files, Fluffy ransomware may also drop other support files that may perform malicious activity on the compromised computer. One of those activities may be to delete the shadow volume copies on the infected computer – activity achieved by using the following commands:

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

In addition to this, Fluffy ransomware may also perform multiple other activities amongst which are the interfering of the Windows Registry sub-keys for running programs on system boot and changing the wallpaper:

→ HKEY_CURRENT_USER\Control Panel\Desktop\
HKEY_USERS\.DEFAULT\Control Panel\Desktop\

Fluffy Virus – Encryption Process

The process of encrypting files, encoded by Fluffy ransomware is achieved via utilizing the AES-256 encryption algorithm which encrypts files by replacing blocks of data with the algorithm itself. This makes the files no longer openable and the virus then generates a symmetric decryption key which is then sent to the servers of the cyber-criminals, making them the only one able to decrypt the files.

The encrypted files have the lock75 expansion added to them and may appear like the image below displays:

After the encryption process has been completed, the lock75 ransomware infection may drop it’s ransom note, which contains the following message that leads to the TOR-based web-page 3qsp4lc4ajyk4ccb.onion:

What’s happening?
Oh no! Fluffy-TAR has encrypted some of your files! It means they are not lost, but cannot be used until decrypted.
They are “locked”, you could say. If you see a file which name ends with “lock75”, it means this file is encrypted. The process is easily reversible but requires a key.
What do I do?
To get your files back, you must buy the decryption key. This payment must be done in Bitcoins, a cryptographic currency. Bitcoin is becoming more and more accessible and nowadays, it is really easy to use bitcoins. See the online interface (button below) for a more detailed introduction to bitcoins.
To get your files back, please send exactly (or more if you want) 0.039 Bitcoins to this address, BEFORE the countdown below ends:
Uppercase/lowercase matter! Make sure you send to the right address! (you can scan the QR code to copy it)
After sending the payment, wait an hour then click the “Retrieve key automatically” button below.
The software will then receive the key and decrypt ALL encrypted files.
Without the key, it is impossible to decrypt your files. Without the proper payment, it is impossible to get the key.
When the countdown reaches zero, you will lose all encrypted documents.
Please note: If you have an antivirus, disable it now if you don’t want to lose your data.

Among the encrypted files are the following file types:

→ .3fr, .7z, .abu, .accdb, .ai, .arp, .arw, .asp, .aspx, .ass, .asset, .ava, .avi,.bas, .bay, .bdcr, .bdcu, .bdd, .bdp, .bds, .bikey, .blend, .bmp, .bpdr, .bpdu, .bsdr, .bsdu, .c, .cc,.cd, .cdr, .cer, .class, .com, .config, .cpp, .cr2, .crt, .crw, .cs, .csv, .cxx, .db, .dbf, .dbx,.dcr, .dd, .dds, .der, .dng, .doc, .docm, .docx, .DTD, .dwg, .dxf, .dxg, .eps, .erf, .fdb, .forge, .gdb,.gif, .groups, .gsd, .gsf, .h, .hpp, .htm, .html, .ims, .indd, .iss, .jar, .java, .jpe, .jpeg, .jpg,.js, .jsp, .kdc, .key, .kwm, .lua, .m, .md, .mdb, .mdf, .mef, .mp3, .mpg, .mrw, .msg, .nef,.nrw, .oab, .obj, .odb, .odm, .odp, .ods, .odt, .orf, .ost, .p12, .p7b, .p7c, .pab, .PAS, .pas, .pdb,.pdd, .pdf, .pef, .pem, .pfx, .php, .pl, .png, .ppk, .ppt, .pptm, .pptx, .ps, .psd, .pst, .psw, .ptx, .pwm, .py, .r3d, .raf, .rar, .RAW, .raw, .rgx, .rik, .rm, .rtf, .rw2, .rwl, .safe, .sav, .sln,.sql, .srf, .srw, .swf, .swift, .tex, .txt, .vcf, .vsd, .wb2, .wpd, .wps, .xcf, .xlk, .xls, .xlsb,.xlsm, .xlsx, .xml, .zip

Fluffy lock75 Virus– How to Remove it and Restore Your Files

After the inevitable has happened, the virus advice is to backup the files encrypted by the lock75 ransomware, the first action should be to backup the encrypted data.

Then we recommend following the removal instructions below, which will help you isolate this virus and remove it’s files. In case you feel uncertain in manual removal, recommendations are to focus on removing the encrypted files automatically by using an advanced anti-malware program. Such will ensure that all files and objects associated with Fluffy ransomware are removed from your computer and that future protection is ensured.

After removing Fluffy ransomware, we advise using the methods in step “2. Restore files encrypted by Fluffy” from the instructions below. They may not ensure the recovery of all your files, but via them you can restore at least some of the data.

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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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.


with Anti-Malware
We recommend you to download SpyHunter and run free scan to remove all virus files on your PC. This saves you hours of time and effort compared to doing the removal yourself.
SpyHunter 5 free remover allows you, subject to a 48-hour waiting period, one remediation and removal for results found. Read EULA and Privacy Policy

About the Lock75 Virus Research

The content we publish on SensorsTechForum.com, this Lock75 Virus how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.

How did we conduct the research on this ransomware?

Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.

Furthermore, the research behind the Lock75 Virus ransomware threat is backed with VirusTotal and the NoMoreRansom project.

To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.


1. How to Recognize Spam Emails with Ransomware
2. How Does Ransomware Encryption Work?
3. How to Decrypt Ransomware Files
4. Ransomware Getting Greedier and Bigger, Attacks Increase by 40%
5. 1 in 5 Americans Victim of Ransomware

Windows Mac OS X

How to Remove Lock75 Virus from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove Lock75 Virus


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 Lock75 Virus 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 Lock75 Virus 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 Lock75 Virus 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 Lock75 Virus 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.

Video Guide for Automatic and Fast Removal

Step 5 (Optional): Try to Restore Files Encrypted by Lock75 Virus.

Ransomware infections and Lock75 Virus 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.

1. Download the recommended Data Recovery software by clicking on the link underneath:

Simply click on the link and on the website menus on the top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.

Step 6: How to Restore Files Encrypted by Ransomware (Video Guide)

Windows Mac OS X

Get rid of Lock75 Virus from Mac OS X.

Step 1: Uninstall Lock75 Virus 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 Lock75 Virus:

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 Lock75 Virus. 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 Lock75 Virus. 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 Lock75 Virus 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 Lock75 Virus. 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.

Click the button below below to download SpyHunter for Mac and scan for Lock75 Virus:


SpyHunter for Mac

Step 3 (Optional): Try to Restore Files Encrypted by Lock75 Virus.

Ransomware infections and Lock75 Virus 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.

1. Download the recommended Data Recovery software by clicking on the link underneath:

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.

Lock75 Virus FAQ

What is Lock75 Virus ransomware and how does it work?

Lock75 Virus 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 Lock75 Virus ransomware infect my computer?

Via several ways.Lock75 Virus 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 Lock75 Virus 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 .Lock75 Virus files?

You can't. At this point the .Lock75 Virus 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 .Lock75 Virus files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by Lock75 Virus 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 ".Lock75 Virus" files (Other Methods)?

Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Lock75 Virus 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 Lock75 Virus 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 Lock75 Virus ransomware and then remove it without causing any additional harm to your important .Lock75 Virus files.

Also, keep in mind that viruses like Lock75 Virus 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:

Reports may be responded to in different timeframes, depending on your local authorities.

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