Trojan.Bootlock

If you are looking for ways to remove Trojan.Bootlock, then you can find it on this page. Free tools and removal procedure is included on this page to get rid of the Trojan instantly.

Trojan.Bootlock is a very harmful Trojan horse that will compromised the master boot record (MBR) of the target computer. This threat will prevent the affected computer to start normally and blocks the access to Windows operating system. The Trojan will move the original MBR’s first sector to fifth sector and overwrites the first three sectors with a modified MBR. Users will then prompt to pay certain amount in order to decrypt files and reinstate the computer to a normal condition.

Damage Level: Medium

Systems Affected: Windows 9x, 2000, XP, Windows Vista

Characteristics
When Trojan.Bootlock is executed on the computer, it will instantly hit the master boot record (MBR) causing the system to malfunction. The Trojan will prevent user from running any programs and blocks the access to any security software. Then, the threat will operate to execute the following tasks:

  • Move the first sector of MBR to fifth sector.
  • Overwrite items in the MBR and encrypts the contents.
  • Overwrite the first three sectors with a modified MBR contains in the Trojan.

After infecting the hard drive, Trojan will restart the computer and display the following ransom message:

Your PC is blocked.
All the hard drives were encrypted.
Browse (developer’s web site here) to get an access to your system and files.
Any attempt to restore the drives using other way will
lead to inevitable loss!!!
Please remember Your UD: (random name here),
With its help your sign-on password will be generated. Enter password:

Image of Trojan.Bootlock Message

If users follow the given instruction, the Trojan will lead them to a site, which provides payment method. After completing the payment, the Trojan will decrypt files on the infected computer and reset the configuration it has made to the MBR.

Distribution
Trojan.Bootlock can enter the system through another Trojan infection. Basically associated Trojans are spread through file-sharing networks. In most occasions, author embeds the code onto legitimate executable files that are frequently downloaded from shared public server. Using a sophisticated technique, it often conceals itself from antivirus application. A Spam email message is another channel to distribute the Trojan to unspecified targets.

How to Remove Trojan.Bootlock

NOTE: We suggest that you PRINT or BOOKMARK this guide. There are steps that we may have to restart the computer in order to successfully remove the threat.

Step 1 : Run a scan with your antivirus program

1. First thing you should do is reboot the computer in Safe Mode with Networking to avoid Trojan.Bootlock from loading at start-up.

Remove all media such as Memory Card, cd, dvd, and USB devices. Then, restart the computer and please do the following:

Boot in Safe Mode on Windows XP, Windows Vista, and Windows 7 system
a) Before Windows begins to load, press F8 on your keyboard.
b) It will display the Advanced Boot Options menu. Select Safe Mode.

Start computer in Safe Mode using Windows 8 and Windows 10
a) Close any running programs on your computer.
b) Get ready to Start Windows. On your keyboard, Press and Hold Shift key and then, click on Restart button.
c) It will prompt you with options, please click on Troubleshoot icon.
d) Under Troubleshoot window, select Advanced Options.
e) On next window, click on Startup Settings icon.
f) Lastly, click on Restart button on subsequent window.
g) When Windows restarts, present startup options with numbers 1 - 9. Select "Enable Safe Mode with Networking" or number 5.

Startup Options

h) Windows will now boot on Safe Mode with Networking. Proceed with virus scan as the next step.

2. Once Windows is running under Safe Mode with Networking, open your antivirus program and download the most recent update. This method ensures that your antivirus program can detect even newer variants of Trojan.Bootlock.

Updating your antivirus software is a one-click process. Please refer to your software manual for complete instructions.

3. Once updating is finished, run a full system scan. After the scan, delete all infected items. If unable to clean or delete, better place the threat in quarantine.

Step 2: Run another test with Norton Power Eraser

1. Click on the button below to download Norton Power Eraser from official web site. Save it to your desktop or any location of your choice.

NPE Download

4. Once the file is downloaded, navigate its location and double-click on the icon (NPE.exe) to launch the program.
5. Norton Power Eraser will run. If it prompts for End User License Agreement, please click on Accept.
6. On NPE main window, click on Advanced. We will attempt to remove Trojan.Bootlock components without restarting the computer.

Advance Scan

7. On next window, select System Scan and click on Scan now to perform standard scan on your computer.

Scan the System

8. NPE will proceed with the scan. It will search for Trojans, viruses, and malware like Trojan.Bootlock. This may take some time, depending on the number of files currently stored on the computer.

9. When scan is complete. All detected risks are listed. Remove them and restart Windows if necessary.

Alternative Removal Methods for Trojan.Bootlock

Option 1 : Use Windows System Restore to return Windows to previous state

During an infection, Trojan.Bootlock drops various files and registry entries. The threat intentionally hides system files by setting options in the registry. With these rigid changes, the best solution is to return Windows to previous working state is through System Restore.

To verify if System Restore is active on your computer, please follow the instructions below to access this feature.

Access System Restore on Windows XP, Windows Vista, and Windows 7

a) Go to Start Menu, then under 'Run' or 'Search Program and Files' field, type rstrui.
b) Then, press Enter on the keyboard to open System Restore Settings.

rstrui-win7

Open System Restore on Windows 8

a) Hover your mouse cursor to the lower left corner of the screen and wait for the Start icon to appear.
b) Right-click on the icon and select Run from the list. This will open a Run dialog box.
c) Type rstrui on the 'Open' field and click on OK to initiate the command.

rstrui-win8

If previous restore point is saved, you may proceed with Windows System Restore. Click here to see the full procedure.

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About Marco Mathew

Marco Mathew works as Windows Network administrator before establishing precisesecurity.com. Now, Marco is dedicating full-time to help computer users' fight viruses, malware, trojan, worms, adware, and potentially unwanted programs.

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