How Can You Completely Remove Trojan:Win32/Crilock.B? – Removal Instructions

Does your MSE detect a threat called Trojan:Win32/Crilock.B but fail to delete it completely? The infection may damage your computer seriously so should be removed immediately once found. If the threat cannot be deleted by antivirus software completely, you can follow the instructions in this post to deal with the problem effectively.

More information about Trojan:Win32/Crilock.B

Trojan:Win32/Crilock.B is a Trojan horse that can modify Windows system files and damages the infected computer system. This malicious program is unable to spread of its own accord. It may perform a number of actions of an attacker’s choice on an affected computer. During installation, the Trojan copies itself to c:\documents and settings\administrator\local settings\application data\zkauhxfbmpubhr.exe and creates several files on the target PC. It also modifies the system registry in order to run its copy automatically every time you start PC.

Once your computer is infected with the Trojan, your browsers may work abnormally. For example, the homepage may be changed to another unknown site and you are frequently redirected to unwanted sites which may contain a lot of pop-up advertisements. If some files on the PC are replaced or ruined by the threat, many computer errors may pop up on your screen constantly.

In addition, the Trojan can alert vital system settings and configuration to mess up the computer system. It may contact the certain remote hosts using port 80. In this way, it can confirm Internet connectivity, report a new infection to its author, receive configuration or other data and instruction from a remote attacker, upload data taken from the affected computer or download and execute arbitrary files (including updates or additional malware),  As a result, your affected PC will perform very slowly. It will take you a long time to wait for the programs to respond. Sometimes, the legitimate programs even stop responding. Moreover, the malware can open a backdoor in the computer to allow a remote hacker to gain unauthorized access to the computer system and take control of the whole system. Your confidential information may be stolen and exploited by the hacker.

Since the Trojan is so dangerous, you have to get rid of it as soon as possible. If the antivirus programs fail to deal with the security problem, you can follow the manual removal instructions below to completely remove Trojan:Win32/Crilock.B.

How to get rid of Trojan:Win32/Crilock.B manually step by step?

Step 1: Restart PC with Safe Mode with Networking.

1. Click Start, click Turn Off Computer.

2. Click Restart, select OK.

3. Once the system has been restarted, tap F8 key on the keyboard in 1 second intervals.

4. When the Windows Advanced Options menu appears on the screen, choose Safe Mode with Networking option.

5. Press Enter button.

Step 2: Show hidden files of the system.

1. Right click My Computer tab on Windows Desktop. Click Open option. From Tools menu, go to Folder Options.

2. Click View, from Hidden files and folders, select show hidden files and folders option and unselect Hide protected operating system files (Recommended).

3. Click OK to confirm the selection.

Step 3: Delete the following files.

c:\documents and settings\administrator\local settings\application data\zkauhxfbmpubhr.exe

c:\documents and settings\administrator\local settings\temp\awpde4f.tmp

c:\documents and settings\administrator\local settings\temp\jtmdf77.tmp

c:\documents and settings\administrator\local settings\temp\voh7a62.tmp

Step 4: Remove the registry entries of the Trojan horse.

Click Start and click Run, type regedit in the box and click OK. Then the Windows registry editor window will open.

In the registry editor, search for the following registry entries and delete them.

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce\

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\random thing

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce\*

Note: It is risky to modify the system registry. Before altering Windows registry, you’d better make a backup of the information related in case any valid registry key is deleted by mistake. Export the registry information to a suitable place on your computer and save it with an appropriate name.

How to automatically delete Trojan:Win32/Crilock.B?

It is a cumbersome task to conduct a manual removal of Trojan:Win32/Crilock.B. Any problems occur during the process can possibly lead to multiple dangerous system problems, including sharp deterioration of system performance, Blue Screen of Death pop-ups, driver update issues, constant browser no responding and unexpected further dangerous malware attack. The PC even stops working if some vital information is removed. To safely remove Trojan:Win32/Crilock.B, you should enable a highly trusted Trojan removal tool on your computer. It is strongly recommended that you use a reliable malware removal program to fix the problem. A malware removal tool is designed to get rid of various malware programs and unwanted stubborn programs and files completely and quickly. With it, you can delete the Trojan as well as its leftovers for good.

Therefore, you should

Download and save a reputable malware removal tool on your PC.

Install and run it to scan your computer.

Select the infected files and delete it automatically with the tool.

Exit the removal tool and restart your PC.

Then your computer will become clean again. Remember to keep your antivirus program and other security tools updated to safeguard your PC against various new cyber threats.