How to remove U321.backdoor

40 threats found

Backdoor U321.backdoor

40 threats removed

Recommended solution

Download OSHI Defender and scan your PC for free

Download and scan now

Name

U321.backdoor

Description

A U321.backdoor is a program that is often deployed by viruses and other malware to grant remote access to an affected computer. Hackers can use a U321.backdoor to remotely control a computer and deploy other malware or engage in criminal activity.

Type

Backdoor

Alias

Manual

How to manually remove U321.backdoor guide. Only for ADVANCED users.

  • Step 1: Basic check for U321.backdoor activity

    Check running processes on your system. Usually you can find U321.backdoor process running. Use the Ctrl+Shift+Esc buttons combination to open system information window and click Processes tab. Scroll down the whole list and try to find the process named like U321.backdoor. If you find U321.backdoor process running, right click on it and choose “End Process”. It will disable U321.backdoor for the current Windows session, but remember that if you do not completely remove U321.backdoor using next steps, then your PC will stay vulnerable to malware attack. Next steps are much more important in removing U321.backdoor.

  • Step 2: Disconnect your PC from the Internet

    Prevent the malware from leaking or spreading your personal data. Backdoor usually uses the Internet to transfer all possible and important information you have. Some Backdoors are not so “Active” and they can simply disable some Windows features and options. To disconnect your PC from the Internet you need to plug-off LAN cable (if you use LAN connection) or to turn of the Wi-Fi module (if you use Wi-Fi Internet connection). Most of (not 100%) Backdoors can not access Wi-Fi module preferences. Turning off the Internet will disable U321.backdoor from transferring any data from your PC.

  • Step 3: Enter the safe mode.

    The next step is very important in removing U321.backdoor. After turning off the Internet and disabling U321.backdoor process you will need to reboot your PC in so-called Safe Mode. Safe Mode is a Windows mode which allows you to start the System using only important applications and services. Safe Mode does not usually allow U321.backdoor to load when the system boots (!!!but exceptions can appear!!!). Choose Restart in Windows Start menu and wait until the screen turns off.

    After that you have to follow the next instructions according to the versions of Microsoft Windows you use:

      Windows XP:
    1. Press the F8 key repeatedly when the first screen appears.

    2. Select Safe Mode from Windows Advanced Options Menu and press ENTER.

      Windows Vista, 7:
    1. Press the F8 key repeatedly when the first screen appears.

    2. Use the arrow keys from Windows Advanced Options Menu in order to select Safe Mode and press ENTER.

      Windows 8, 8.1, 10:
    1. Press and hold the Shift button when left-clicking the Restart button on Windows log-on screen.

    2. Select Safe Mode from Windows Troubleshooting boot screen and press ENTER.

  • Step 4: Removing virus files

    Having booted your PC in Safe mode you have to start cleaning your PC manually by deleting every file associated with U321.backdoor one by one. Here is the list of all files associated with U321.backdoor. Delete all files listed below using the Shift+Delete buttons combination. Always double check the file name as sometimes Backdoors use very similar filenames as very important system files do and you can mistakenly remove important system file what will harm your system and you will not be able to boot your PC at all.

    Please, remember that viruses are always progressing and sometimes new files can appear. If you are using our offline PDF guide on How to remove U321.backdoor, please check if you have it’s latest version.

    We do not guarantee that U321.backdoor has the same file structure at the moment of deleting.

    After removing all files associated with U321.backdoor that were listed above, reboot your system in normal mode and check if your PC works fine or you still have any troubles.

    It it is OK – congratulations! You have made a great job!

    If it is still NOT ok – use OSHI Defender to check your PC.

Frequently Asked Questions

We have an answer

  • How did my computer get U321.backdoor?

  • I detected U321.backdoor on my computer. What do I do?

  • What damage can U321.backdoor do to my computer?

  • What are the main symptoms of U321.backdoor?

  • Can U321.backdoor spread to other computers?

  • Countries with the highest U321.backdoor infection rates.

  • The first recorded appearance of U321.backdoor

I have a question

Comments

You have a question?

0 comments

How did my computer get U321.backdoor?

U321.backdoor is a backdoor, which is a dangerous virus. All backdoors are created to obtain information without the user knowing it. The most common way computers become infected with a backdoor, including U321.backdoor, is when users install software (such as cryptographic software designed to protect confidential information) with a built-in backdoor.

Was the answer helpful?
Was the answer helpful?
0%
0%

I detected U321.backdoor on my computer. What do I do?

To remove U321.backdoor, you need to make a copy of all data stored on your computer (personal data and files vs. software). Then scan your computer for U321.backdoor. Backdoor is often hard to detect and remove. We strongly recommend that you use reliable antivirus software to get rid of U321.backdoor. OSHI Defender can detect and remove most known and emerging backdoors without damaging your computer.

Was the answer helpful?
Was the answer helpful?
0%
0%

What damage can U321.backdoor do to my computer?

U321.backdoor threatens the security of all data stored on your computer.

Was the answer helpful?
Was the answer helpful?
0%
0%

What are the main symptoms of U321.backdoor?

High network activity
PC slowdown
System crashes
Unusual browser settings
Unusual programs

Was the answer helpful?
Was the answer helpful?
0%
0%

Can U321.backdoor spread to other computers?

U321.backdoor spreads through software. It is designed to steal certain data stored on your computer. If the source software is installed on other computers on your local network, you should scan each of them. The OSHI Defender license lets you protect up to three computers simultaneously.

Was the answer helpful?
Was the answer helpful?
0%
0%

Countries with the highest U321.backdoor infection rates.

US

Was the answer helpful?
Was the answer helpful?
0%
0%

The first recorded appearance of U321.backdoor

2016-02-22

Was the answer helpful?
Was the answer helpful?
0%
0%

Feedback

Use the form below to send us your comments and questions

OSHI LIMITED
Address: Rm.709, Wellborne Commercial Centre, 8 Java Road, North Point, Hong Kong.
Email: i...@oshidefender.com

Report a problem

Please provide us with as much information and data as possible (Application name, application version, OSHI Defender version, OS version e.t.c.)

Affiliate program registration

Fill out following form and receive 80% commission per OSHI Defender sale