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Cezar ransomware virus. How to remove? (Uninstall guide)

removal by Linas Kiguolis - - | Type: Ransomware

Cesar ransomware is a crypto-virus which continues Dharma's activities 

Cezar ransomware virus

Questions about Cezar ransomware virus

Cezar ransomware is a file-encrypting virus that can cause the loss of all files on the targeted machine. It is the continuation of the infamous Dharma ransomware[1] and has emerged in August 2017. The malicious program[2] encrypts all data by adding a specific file extension that includes victim’s ID number, cyber criminals' email address, and either .cezar or .cesar file extension. It then drops ransom note called HELP.txt which urges users to contact cybercriminals via email or Users must pay ransom in Bitcointo get their data back.

Name Cezar
First discovered August 2017
File extension .cezar or .cesar
Contacts or
Distribution Spam emails, unprotected RDP configuration, malicious sites, etc.
Symtoms All personal files lockedand unusable
Extermination We recommend Reimage or Malwarebytes 

Cesar virus spreads via malicious spam emails and infiltrates the system as soon as a victim clicks on an obfuscated attachment. Then the executable is downloaded and run on Windows OS. Malware might modify the Registry, create new entries in order to boot at system startup and strengthen its presence.

Following a successful computer infiltration and data encryption, Cesar ransomware drops a ransom note that contains a short message from criminals to the victim:

To decrypt files, write to my email

This short Cesar ransom note is provided in a simple .txt file named “HELP.txt.” However, it’s quite unusual ransom note because it does not provide any information about data recovery possibilities and how it may cost for the victims.

It is clear why cyber criminals do not want to reveal the final price of the ransom – they might be open to negotiations with potential victims. In addition, different versions of Cesar malware might be adding one of the following file extensions to encrypted files:

  • .id-.[].cesar;
  • .id-.[].cesar;
  • id-.[].

The biggest problem with .cesar ransomware is that it is capable of deleting Shadow Volume Copies. They are necessary for recovering files using third-party software. Currently, the official decryptor is not released yet. However, some versions of Dharma are already decryptable.[3] Thus, there’s hope.

If this ransomware hit your computer, we strongly recommend using a decent antispyware product to remove Cesar virus from the system. You might be interested into tools such as Reimage or Malwarebytes. Once you remove the virus, you will be able to try alternative data recovery methods.

At the end of this article, you can find detailed information how to disable the virus in order to get rid of it. Also, there you can find .cesar decrypt possibilities.

You should not put Cesar virus removal aside because it is a highly important task that you must complete. Only after deleting the virus from the system you will be able to use it again securely. The reason why we recommend using the automatic spyware/malware removal tool is that some viruses spread in tandem with other severe malware variants such as Trojans or keyloggers.

Therefore, if you do not want to leave any dangerous programs on your computer, find them and eliminate them automatically with the help of anti-malware tool. Attempts to delete critical viruses manually can result in failure and bring even more security-related problems to you, say experts from[4].

Methods used for malware distribution

Dharma ransomware variants (including .cezar ransomware) usually employ traditional malware distribution techniques for proliferation. In most times, it arrives as a malicious email attachment[5] that needs to be opened by the computer used in order to be run. To convince the victim to open the document, criminals spoof sender’s address and rename the malicious file as invoice, a message from courier, receipt, or another important document that might interest the potential victim.

Despite that, criminals can employ other distribution techniques such as malicious ads or exploit kits. They can easily deceive the user and make one install and download a malicious file hidden behind an online ad. Therefore, to protect your PC, we highly recommend using anti-malware software, creating a backup and visit only reputable and trustworthy sites. This way, the risk of becoming infected lowers.

Taking care of your data protection is the best what you can do today. Because Cesar ransomware decrypt solutions may not help to restore all of your files.

Cezar crypto-virus

Steps to take after Cesar virus attack

If the files you needed are already lost, remove Cezar virus as soon as you can. Cybercriminals won’t allow you to use your computer without problems until you uninstall the malicious program that is hiding in the system. In addition, identifying the threat might be hard.

For this reason, we have prepared a decent Cezar removal guide for you to use. You can find it right below the article. However, you will need a reputbale security software to wipe out malware entirely. For that , we recommend Reimage or Malwarebytes.

We have also provided alternative data recovery instructions. Hopefully, they will help you until security experts create the official .cesar decryptor.

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More information about this program can be found in Reimage review.

If you decided to select another anti-spyware, uninstall Reimage from your computer.
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To remove Cezar virus, follow these steps:

Remove Cezar 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 Cezar

    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 Cezar removal.

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

Remove Cezar 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 Cezar. 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 Cezar removal is performed successfully.

Bonus: Recover your data

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

Unfortunately, .cezar file extension files is undefeated and currently there are no ways to restore your files for free. Unless you have a backup, the chances to restore them are very low. Despite that, you can try the following methods:

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

Data Recovery Pro perfectly helps to recover corrupted files

Data Recovery Pro can be used on files that were corrupted, and it can also help to restore deleted files. Although it wasn't created for recovery of encrypted files, you can still try it and see what it can do.

  • 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 Cezar ransomware;
  • Restore them.

Windows Previous Versions feature might be useful

Windows Previous Versions feature is useful if you want don't have a large amount of files to return. Also, Windows Restore function should have been enabled before the attach occurred.

  • 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”.

Try ShadowExplorer software

ShadowExplorer is a software that can help you to restore files from Volume Shadow Copies. If the virus failed to delete these copies, there is still hope to recover some of your files.

  • Download Shadow Explorer (;
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

About the author

Linas Kiguolis
Linas Kiguolis - Expert in social media

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