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Cerber 4.1.5 ransomware virus. How to remove? (Uninstall guide)

removal by Olivia Morelli - - | Type: Ransomware

Yet Another variant of Cerber – Cerber 4.1.5 ransomware virus has been released

The appearance of Cerber 4.1.5 virus shows that Cerber ransomware authors are focusing on quantity, but not the quality of new versions of this virus. For some reason, over the past few weeks they have released even 4 new modifications of the fourth virus version that hardly differ from each other. The Cerber 4.1.0, Cerber 4.1.1, Cerber 4.1.4 and finally the fifth ransomware version (no complaints regarding 4.1.2 and 4.1.3 versions reached us so far) encrypt files using same cryptography and leave the same ransom note on victim’s computer. All these versions change victim’s desktop background with a picture that says what virus has affected the computer, and provide URLs to personal payment websites where the victim can get more information about the infection and learn how to pay the ransom. The virus also saves README.hta file into every folder that contains encrypted data, which launches a window “Cerber Ransomware Instructions.” This screen explains that files have been encrypted, and they are not damaged- just “secured.” In order to retrieve them, the victim has to pay a ransom, the ransom note says. It also contains links leading to “personal page.”

Cerber 4.1.5 virus, just like the previous three versions, distorts filenames by replacing original ones with 10 random chars and also removes the original extension and appends 4 random chars instead of it. For example, if the virus encrypts a file named DCM_0182.jpg, it can become named similarly to this: YhapFV86Ax.tf6a. In addition to that, we must state that every file gets a different name, but all of them get the same file extension. Sadly, we have to say that there are to decryption tools capable of repair corrupted files – only authors of this virus have this power. They understand that victims agonize over lost files and seek to retrieve them, so they suggest a compromise – pay a ransom, get your files back. Virus asks for 0.6967 BTC, which is approximately $500, or more if you cannot collect this sum of money within the given period of time. We strongly recommend you to refuse to comply with such requirement. Although they might have the decryption key that can fix your files, there is no guarantee that they are willing to give it to you. Therefore, it is highly recommended to eliminate this virus as soon as possible. It is better to remove Cerber 4.1.5 ransomware automatically, because a professional malware removal tool can locate and kill all components of the virus and other malware-related files on the entire system, whereas it can take half a day to do that manually. For Cerber 4.1.5 removal, we advise using the Reimage software.

Image showing Cerber 4.1.5 virus attack

Infiltration methods

Questions about Cerber 4.1.5 ransomware virus

Various distribution techniques help Cerber virus proliferate. Mostly, it reaches victims via malware-laden email letters that carry infectious attachments. If the victim gets convinced to open them, malware easily roots into the system and starts encrypting files right away. Symptoms of infection are usually not noticeable – the computer becomes slower for a while, but PC slowdowns hardly bother computer users that much. As a result, all personal data gets encrypted. To avoids such situation, do not open emails that come from unknown persons or individuals that pretend to be working at well-known companies but send “official” letters from suspicious-looking email addresses.

The fourth generation of Cerber is known to be distributed via PseudoDarkleech campaign, which delivers ransomware through compromised Internet websites. PseudoDarkleech either injects link leading to RIG exploit kit to affected websites or reroutes users to a redirect server that points to the same exploit kit. Cerber is also reportedly distributed with the help of Neutrino exploit kit. Such attacks can be prevented only with an up-to-date and reliable anti-malware software.

How to remove Cerber 4.1.5?

Please understand that this virus is a severe and malignant computer program that is designed to take your personal files away illegally. To remove Cerber 4.1.5 virus, it is HIGHLY advisable to use a strong anti-malware software. This malware example alters Registry keys and adds a significant number of new files to the system, which are hard to detect and remove, especially if you are not an IT expert. For Cerber 4.1.5 removal, use one of the suggested malware removal tools, but before doing it, start the machine in a specific way as explained below.

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To remove Cerber 4.1.5 virus, follow these steps:

Remove Cerber 4.1.5 using Safe Mode with Networking

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Cerber 4.1.5

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Cerber 4.1.5 removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove Cerber 4.1.5 using System Restore

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Cerber 4.1.5. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that Cerber 4.1.5 removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Cerber 4.1.5 from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by security experts.

If your files have been corrupted, please try recommended data recovery methods first. No matter if you are willing to pay the ransom or not, you should try to recover them for free. These techniques might help you to reconstruct your files.

If your files are encrypted by Cerber 4.1.5, you can use several methods to restore them:

Data recovery with Data Recovery Pro

Data Recovery Pro is a professional tool that can help to fix or restore corrupted, deleted, and sometimes – encrypted files. We strongly believe that this tool can help you to recover at least part of your files.

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by Cerber 4.1.5 ransomware;
  • Restore them.

Windows Previous Versions

Can you remember enabling System Restore feature some time ago? If so, you should try this method to restore individual records.

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

About the author

Olivia Morelli
Olivia Morelli - Ransomware analyst

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