What is Backdoor.Grexden?
Backdoor.Grexden is an awfully nasty Trojan virus designed to compromise the security system of your PC to facilitate the hackers who attempt to intrude your PC for evil purpose. Once Backdoor.Grexden has secretly gone into your PC, it starts to bombard you with lots of popups of ads and system alerts, which caused by malware come with Backdoor.Grexden. Then it generates backdoors to download malicious files to seriously compromise your PC security, make the PC be full of exploits and become an easy quarry for cyber criminals. What’s more, the threat highly consumes your PC resources and degrades your PC performance seriously: the operation will become unstable and slow as snail, system errors will appear constantly, browser may be redirected to strange websites, etc. To prevent attacking from more threats, you need to get rid of Backdoor.Grexden immediately. Follow steps below to kill it now.
Besides, Backdoor.Grexden can generate lots of rogue vulnerabilities to hackers. Hackers can utilize those vulnerabilities to remotely control the targeted computers as well as to capture what users are doing online. In this way, if users are involved something important information during online browsing, this Backdoor.Grexden will pose risks to the privacy security. What’s worse, Backdoor.Grexden can record banking data, credit card passwords and other personal info. during the controlling. Once infected by Backdoor.Grexden, the targeted computer encounters lots of unexpected system errors and potentially unwanted programs attacks. Users should get rid of Backdoor.Grexden completely without any delay.
Video Guide: How To Remove Trojan virus?
Backdoor.Grexden is whipping your PC?
1, Backdoor.Grexden can attack your PC seriously.
2, this Trojan can modify the settings of the system in the background.
3, it can add new files and registry or other features which will attack the PC seriously.
4, this infection can show many annoying pop-ups and redirections if you open your internet browsers to search something.
5, it will introduce other infections on the target computer.
6, it can help hackers to steal your personal information such as usernames and passwords, or other valuable pieces of information.
Threats of Backdoor.Grexden
1. It is a bug could be distributed via various unfair means.
2. It is created with rootkit technique.
3. It creates tons of corrupt files and modifies some system components against your will.
4. It may spread to all of your drives.
5. It may mess up files or other data on the computer completely.
6. It makes the system sluggish and vulnerable.
7. It may cause more malware issues if you leave it on the computer.
8. It may help remote hackers steal personal information stored on the computer or perform other scam actions.
How to Remove Backdoor.Grexden From Your PC?
Backdoor.Grexden is a hazardous Trojan that will damage your computer system, violate your privacy and cause many other problems. Once it is detected on your computer, you have to remove it as soon as possible. You can follow the instructions below to get rid of this threat.
Method 1: Automatically Remove Backdoor.Grexden by Using SpyHunter.
Method 2: Manually Remove Backdoor.Grexden by Following the Steps Below.
Method 3: Use Windows System Restore.
METHOD 1: AUTOMATICALLY REMOVE Backdoor.Grexden BY USING SPYHUNTER.
SpyHunter is a professional and powerful malware removal tool, which is able to detect and delete various kinds of threat from your computer without damage. It can deeply scan your whole system and remove all the detected threats automatically within just a few minutes. Please follow the steps below to install in on your PC and use it to remove the threat.
Step 1: Click the button below to download SpyHunter on your computer.
Step 2: Right click on the icon of SpyHunter and select “run” from the menu. Click on the run button if the system prompts a window asking whether you want to run the program or not.

Step 3: Tick I accept the license agreement and then click Next. Then SpyHunter will be installed on your computer automatically.
Step 4: Click Finish when you see the below window.
Step 5: After you finish the installation process, run the Spyhunter tool and click the “Malware Scan” button to perform a full scan of your computer to find out the threat.

Step 6: When the scan accomplishes, select all the detected malicious files and then click the Remove button on the right side to clean up all the detected threats. Reboot your computer to apply all changes.

METHOD 2: MANUALLY REMOVE Backdoor.Grexden BY FOLLOWING THE STEPS BELOW.
The Trojan should be deleted from your PC as soon as detected. It can damage your computer terribly and violates your privacy if you don’t get rid of it promptly. Follow the manual removal instructions to remove it if you have certain skills of the computer. It is important to back up your computer before any file changes.
Step one: Terminate the processes of the Trojan in Windows Task Manager.
1) Right-click on the taskbar (or press CTRL+SHIFT+ESC keys) to open Windows Task Manager.
2) Click on the Processes tab, scroll down and find out its running processes of the Trojan, and then click on “End Process” button to terminate the selected processes.

Step two: Remove the registry entries of the Trojan from Registry Editor.
1) Press Windows + R keys and input regedit into the Run box, and then click OK to start Registry Editor.

2) When Registry Editor opens, search for and remove all the registry entries of the Trojan. Back up your registry in order to instantly restore your information if you operate mistakenly.

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\[RANDOM CHARACTERS].exe
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run ‘Random’
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings “CertificateRevocation” =Random
Step three: Delete show hidden files and folders of the Trojan.
1) Launch Control Panel from Start menu and click on Folder Options.

2) Under the View tab, check Show hidden files and folders and non-check Hide protected operation system files (Recommended). Then click on OK.

3) Delete all the files associated with the Trojan from your computer as follows:
%AllUsersProfile%\random.exe
%Temp%\random.exe
%AllUsersProfile%\Application Data\.dll
Step four: Please restart your computer normally to ensure all changes take effect as soon as you finish all the steps above.
Method 3: Use Windows System Restore.
if you have been infected by Backdoor.Grexden you migt be required to restore yoru computer to a previous saved state. During an infection, Backdoor.Grexden drops various files and registry entries. The threat intentionally hides system files by setting options in the registry and might install a rootkit. With these changes, the best solution is to return Windows to previous working state is through System Restore. Even if your standard AV has removed the infection it might be the safest aleternative. To verify if System Restore is active on your computer, please follow the instructions below to access this feature.
Windows XP, Windows Vista, and Windows 7
Go to Start Menu, then under ‘Run’ or ‘Search Program and Files’ field, type rstrui.
Then, press Enter on the keyboard to open System Restore Settings.
Windows 8 and Windows 10
Hover your mouse cursor to the lower left corner of the screen and wait for the Start icon to appear.
Right-click on the icon and select Run from the list. This will open a Run dialog box.
Type rstrui on the ‘Open’ field and click on OK to initiate the command.
Next,
1.Continue on the steps and choose a desired restore point. All saved restore points are listed with corresponding date, time and description. Please click and read ‘How do I choose a restore point?’ for additional guide. system-restore-7
Typically, only the most recent restore points are shown.

If prompted to Confirm your restore point, please click on Finish to begin the process.
Note, System Restore will not bring back lost personal files such as documents, images and videos. System Restore specific purpose is to bring back previous configuration and change the system state of Windows.
Video Show: Restoring your computer with Windows 7
Conclusion
Backdoor.Grexden is a pesky Trojan horse that can secretly infiltrate into the target computer through many different channels. Antivirus programs make no sense for it. As soon installed on the computer, it will cause a lot of chaos to the computer. What’s still, it has the ability to help hackers to steal your privacy like personal information and precious data. To avoid unnecessary damage and lost, you have to quickly get rid of this Trojan horse.
Warm Tips: If you are afraid of making mistakes and damaging your computer system during the manual removal process, you can use a powerful and professional removal tool. It not only can fully scan your system, but also can automatically remove Backdoor.Grexden from your computer within a few clicks of mouse. Download the powerful removal tool and run it to clean up the malicious Trojan horse from your PC right now!