Trojan Dz ransomware / virus (Virus Removal Guide) - Recovery Instructions Included

Trojan Dz virus Removal Guide

What is Trojan Dz ransomware virus?

Trojan Dz demands 0.5 Bitcoins for data recovery

Trojan Dz ransom note

Trojan Dz is a file-encrypting virus that appeared to be a new variant of Cyber SpLiTTer Vbs Ransomware . Malware uses a strong encryption algorithm to take targeted files to hostage and locks them with .Isis file extension.

Following data encryption, Trojan Dz ransomware triggers a ransom-demanding window that starts with the popular phrase: “Oops, Your Files Have Been Encrypted!” The threatening message explains what is data encryption and tells users to send 0,5 Bitcoins to the provided Bitcoin wallet address. Crooks also left a contact email address –

Once users exchange several hundreds of dollars to unknown decryption software, they are supposed to get back access to their data. However, no one can assure that these statements are true. We do not recommend paying the ransom[1] because authors of Trojan Dz virus might disappear. Keep in mind that the primary purpose of the ransomware is to swindle the money, not help victims.

If you see the ransom note, you should close it immediately and opt for Trojan Dz removal. Elimination of the ransomware will not recover your files. However, this step is crucial to revert system changes made by crypto-malware and try alternative data recovery methods.

Even if you decide to pay the ransom (NOT recommended), the Trojan Dz malware remains installed on the computer. Therefore, malicious processes might be running in the background and later encrypt your files again. This time cyber criminals might ask even more money.

Just like other ransomware-type viruses, Trojan Dz also strengthens its presence by altering Windows Registry, disabling particular processes and installing malicious components. Therefore, in order to use the computer safely again, you have to clean it.

We recommend using FortectIntego or SpyHunter 5Combo Cleaner for Trojan Dz removal. The instructions how to disable the virus and install security software is presented below. Please follow them carefully and do not try to wipe out ransomware-related files manually. It might end up tragically!

Trojan Dz ransomware virus attackTrojan Dz ransomware demands to pay 0.5 Bitcoin for data recovery.

The ways how virus find the way to the computer

Developers of the malware do not rely on only one distribution method. They use a bunch of different methods to hijack devices:

  • spam emails with infected links or malicious attachments;[2]
  • malvertising;
  • bogus downloads and installers;
  • exploit kits.

Most of the time, successful ransomware attack requires user’s participation, such as opening obfuscated document attached in the email or downloading an illegal or fake program. Therefore, users are advised to be careful in order to avoid ransomware attack.

According to the security experts from Germany,[3] even the strongest antivirus can protect the computer from ransomware fully if users misbehave online. Thus, watching your clicks and download sources is a must.

Wipe out Trojan Dz virus from the system

In order to install security program that is necessary for Trojan Dz removal, you have to restart your computer to the Safe Mode with Networking. This mode allows disabling the virus. It’s necessary because ransomware might prevent users from installing or running antivirus.

When in Safe Mode, you will be able to download and install reliable security software, such as FortectIntego or SpyHunter 5Combo Cleaner. If you decide to use another tool, please choose legit download website to avoid installation of malware.

Before you run a full system scan, please update your chosen antivirus or malware removal program. Only an up-to-date tool can remove Trojan Dz from the computer entirely.

do it now!
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Compatible with Microsoft Windows Compatible with macOS
What to do if failed?
If you failed to fix virus damage using Fortect Intego, submit a question to our support team and provide as much details as possible.
Fortect Intego has a free limited scanner. Fortect Intego offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Fortect, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Intego, try running Combo Cleaner.

Getting rid of Trojan Dz virus. Follow these steps

Manual removal using Safe Mode

These steps will explain how to reboot the PC to Safe Mode with Networking and run automatic removal:

Important! →
Manual removal guide might be too complicated for regular computer users. It requires advanced IT knowledge to be performed correctly (if vital system files are removed or damaged, it might result in full Windows compromise), and it also might take hours to complete. Therefore, we highly advise using the automatic method provided above instead.

Step 1. Access Safe Mode with Networking

Manual malware removal should be best performed in the Safe Mode environment. 

Windows 7 / Vista / XP
  1. Click Start > Shutdown > Restart > OK.
  2. When your computer becomes active, start pressing F8 button (if that does not work, try F2, F12, Del, etc. – it all depends on your motherboard model) multiple times until you see the Advanced Boot Options window.
  3. Select Safe Mode with Networking from the list. Windows 7/XP
Windows 10 / Windows 8
  1. Right-click on Start button and select Settings.
  2. Scroll down to pick Update & Security.
    Update and security
  3. On the left side of the window, pick Recovery.
  4. Now scroll down to find Advanced Startup section.
  5. Click Restart now.
  6. Select Troubleshoot. Choose an option
  7. Go to Advanced options. Advanced options
  8. Select Startup Settings. Startup settings
  9. Press Restart.
  10. Now press 5 or click 5) Enable Safe Mode with Networking. Enable safe mode

Step 2. Shut down suspicious processes

Windows Task Manager is a useful tool that shows all the processes running in the background. If malware is running a process, you need to shut it down:

  1. Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  2. Click on More details.
    Open task manager
  3. Scroll down to Background processes section, and look for anything suspicious.
  4. Right-click and select Open file location.
    Open file location
  5. Go back to the process, right-click and pick End Task.
    End task
  6. Delete the contents of the malicious folder.

Step 3. Check program Startup

  1. Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  2. Go to Startup tab.
  3. Right-click on the suspicious program and pick Disable.

Step 4. Delete virus files

Malware-related files can be found in various places within your computer. Here are instructions that could help you find them:

  1. Type in Disk Cleanup in Windows search and press Enter.
    Disk cleanup
  2. Select the drive you want to clean (C: is your main drive by default and is likely to be the one that has malicious files in).
  3. Scroll through the Files to delete list and select the following:

    Temporary Internet Files
    Recycle Bin
    Temporary files

  4. Pick Clean up system files.
    Delete temp files
  5. You can also look for other malicious files hidden in the following folders (type these entries in Windows Search and press Enter):


After you are finished, reboot the PC in normal mode.

Remove Trojan Dz 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 Trojan Dz. 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 FortectIntego and make sure that Trojan Dz removal is performed successfully.

Bonus: Recover your data

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

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

Data Recovery Pro restores corrupted files

Some of the files encrypted by Trojan Dz ransomware virus might be restored with Data Recovery Pro:

  • 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 Trojan Dz ransomware;
  • Restore them.

Windows Previous Versions feature might be usful

This feature allows accessing previously saved versions of files before the ransomware attack. However, it's possible under one condition. System Restore had to be enabled before ransomware attack.

  • 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”.

ShadowExplorer might restore some of the files

If virus did not delete Shadow Volume Copies, this tool can help you to bring back the important data:

  • 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.

Trojan Dz Decrypter is not available yet.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Trojan Dz and other ransomwares, use a reputable anti-spyware, such as FortectIntego, SpyHunter 5Combo Cleaner or Malwarebytes

How to prevent from getting ransomware

Access your website securely from any location

When you work on the domain, site, blog, or different project that requires constant management, content creation, or coding, you may need to connect to the server and content management service more often. The best solution for creating a tighter network could be a dedicated/fixed IP address.

If you make your IP address static and set to your device, you can connect to the CMS from any location and do not create any additional issues for the server or network manager that needs to monitor connections and activities. VPN software providers like Private Internet Access can help you with such settings and offer the option to control the online reputation and manage projects easily from any part of the world.


Recover files after data-affecting malware attacks

While much of the data can be accidentally deleted due to various reasons, malware is one of the main culprits that can cause loss of pictures, documents, videos, and other important files. More serious malware infections lead to significant data loss when your documents, system files, and images get encrypted. In particular, ransomware is is a type of malware that focuses on such functions, so your files become useless without an ability to access them.

Even though there is little to no possibility to recover after file-locking threats, some applications have features for data recovery in the system. In some cases, Data Recovery Pro can also help to recover at least some portion of your data after data-locking virus infection or general cyber infection. 


About the author
Ugnius Kiguolis
Ugnius Kiguolis - The mastermind

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