Remove Cerber 4.1.0 Ransomware and Restore Your Files (Updated Cerber v4)

cerber-4-1-0-ransomware-virus-sensorstechforum-fortinet-comIt was not long before the new Cerber ransomware which many seem to call version 4.0 received an overhaul. The new version now uses more optimized code for the modification and encryption of the infected computers and a new wallpaper stating it’s version to 4.1.0 and many other improvements. The virus however still uses the same README.hta file, just like the original version does. In case you have been infected by this updated strain of Cerber, calling itself 4.1.0 we advise you to immediately read this article and learn more about it and how to remove this iteration of the virus and in addition to this see our suggested alternative methods to try and restore your encrypted files.

Threat Summary

NameCerber 4.1.0
TypeRansomware Virus
Short DescriptionThis Cerber ransomware variant encrypts files with the RSA or AES ciphers adding four randomly generated A-Z 0-9 characters(ex. .z33f) as a file extension to the encrypted files and asks a ransom payoff for decryption.
SymptomsFiles are enciphered and become inaccessible by any type of software. A ransom note with instructions for paying the ransom shows as a “README.hta” file.
Distribution MethodSpam Emails, Email Attachments, File Sharing Networks, Malicious Executable in Torrent Trackers.
Detection Tool See If Your System Has Been Affected by malware


Malware Removal Tool

User ExperienceJoin our forum to Discuss Crysis Ransomware.
Data Recovery ToolWindows 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.

Technical Insight of The Cerber 4.1.0 Virus

The previous version of Cerber 4.1.1, named 4.1.0 does not have many differences when compared to the newer one. It is still as massively widespread as most Cerber iterations, like .cerber, .cerber2 and .cerber3 were and it is still using a random file extension like all of the Cerber 4.0 version. To better help you understand how the infection process by Cerber 4.1.0 works we have decided to explain it methodologically.

Stage 1: Distribution and Infection

In order to be spread it, the creators of Cerber ransomware have used a very common technique – exploit kit. And not just any exploit kit too – they have undertaken massive campaigns to spread their ransomware virus via a very advanced and notorious exploit kit – Rig EK. This type of collaboration also may involve the same people who are responsible for spreading Dridex malware and the 4.1.1 version’s malicious files. Whatever the case may be, you can get infected with Cerber most likely by clicking on a fake and malicious web link (URL). But how to get one to click on such web link.

Malware researchers have discovered several methods that may be used by cyber-criminals that could perform this and users should beware of those in the recent months to come:

  • Malicious URLs posted and concealed behind Facebook posts that only appear to be legitimate. Some Facebook viruses may take over whole profiles or create duplicate ones to make the posts seem more legitimate.
  • Web links posted via referral spam as comments on online forums and websites.
  • URLs that may be posted if your computer has been infected by other malware or a PUP (Potentially Unwanted Program).
  • Malicious web links that may have been displayed as fake search results by suspicious search engines.
  • URLs concealed behind fake social media buttons or others sent out as e-mail spam.

There are many other methods to cause an infection via a URL, but these ones are the primary ones which researchers warn us about. As soon as the future victim’s computer has connected to the malicious URL, a so-called drive-by-download is administered, meaning that RIG Exploit Kit downloads and opens automatically after which causes the infection.

After infection has been caused, the RIG Exploit Kit automatically connects to the web, more specifically to Cerber’s hosting web servers to download the payload of the virus. And these severs are not one or two, but in the tens, even hundreds, due to the fact that the ransomware uses advanced spamming methods.

After the exploit kit downloads the payload of Cerber 4.1.0 it may situate it in the commonly used Windows folders and from there start injecting malicious scripts into legitimate Windows processes to perform malicioius activities. The malicious payload may have different file formats as well as different names, for example:

commonly used file names and folders

Stage 2: Post Infection Activity of Cerber 4.1.1

After infection, Cerber may modify the Registry Editor of Windows where it has the chance of creating custom registry entries that may change the wallpaper, run the malicious executable responsible for the encryption of the files and perform other activities. The targeted registry entries by this iteration of Cerber most likely are:

→ HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce

After having modified all of the registry entries, the virus may begin the encryption procedure. The encryption procedure may not be as sophisticated as it may seem, but it generally has support for the widely used file types, like:

  • Videos.
  • Audio files.
  • Image files.
  • Database files.
  • Microsoft Word sheets.
  • Microsoft Excel documents.
  • Power Point presentations.
  • Files associated with Adobe Photoshop.
  • Database files associated with different programs.
  • Virtual drives.
  • E-mail files (Microsoft Outlook).

After the files are encrypted they assume the typical for v4 Cerber variants random file extension with A-Z 0-9 symbols as well as changed file names:


After this has been done, Cerber ransomware changes the wallpaper with it’s distinctive 4.1.0 notification.


The note prompts users to open the Cerber 4.1.0 payment page, which includes more instructions on how to pay the ransom:


Remove Cerber 4.1.0 Ransomware and Restore Randomly Encrypted Files

The bottom line is that Cerber is continuing to evolve and rather fast almost as if it is competing with the other big “player” in the ransomware world – the Locky virus. Anyone who has become an unfortunate victim and sees the above image as a wallpaper is advised to immediately remove the virus and try the alternative methods in step “2. Restore files encrypted by Cerber 4.1.0” below.


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

Windows Mac OS X

How to Remove Cerber 4.1.0 from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove Cerber 4.1.0


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 Cerber 4.1.0 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 Cerber 4.1.0 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 Cerber 4.1.0 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 Cerber 4.1.0 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.

Step 5 (Optional): Try to Restore Files Encrypted by Cerber 4.1.0.

Ransomware infections and Cerber 4.1.0 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 reccomended 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.

Windows Mac OS X

Get rid of Cerber 4.1.0 from Mac OS X.

Step 1: Uninstall Cerber 4.1.0 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 Cerber 4.1.0:

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 Cerber 4.1.0. 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 Cerber 4.1.0. 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 Cerber 4.1.0 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 Cerber 4.1.0. 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 Cerber 4.1.0:


SpyHunter for Mac

Step 3 (Optional): Try to Restore Files Encrypted by Cerber 4.1.0.

Ransomware infections and Cerber 4.1.0 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 reccomended 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.

Cerber 4.1.0 FAQ

What is Cerber 4.1.0 ransomware and how does it work?

Cerber 4.1.0 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 Cerber 4.1.0 ransomware infect my computer?

Via several ways.Cerber 4.1.0 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 Cerber 4.1.0 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 .Cerber 4.1.0 files?

You can't. At this point the .Cerber 4.1.0 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 .Cerber 4.1.0 files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by Cerber 4.1.0 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 ".Cerber 4.1.0" files (Other Methods)?

Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Cerber 4.1.0 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 Cerber 4.1.0 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 Cerber 4.1.0 ransomware and then remove it without causing any additional harm to your important .Cerber 4.1.0 files.

Also, keep in mind that viruses like Cerber 4.1.0 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.

1 Comment

  1. Avatarcrapcbm

    removing is not the problem
    but as we can see here, you all only copy the removal, but have really no clue how te recrypt the files
    so poor … hanging brain?


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