How to uninstall BlackKnight2020 screen locker?

Also Known As: BlackKnight2020 malware
Distribution: Low
Damage level: Severe

BlackKnight2020 virus removal guide

What is BlackKnight2020 screenlocker?

BlackKnight2020 is a piece of malware designed to make sure that victims would not be able to use the infected computer by locking the screen. It displays a ransom note with instructions on how to pay for the code that supposed to unlock the screen. This screen locker was discovered by xiaopao.

BlackKnight2020 scam

After installation BlackKnight2020 displays a ransom note saying that a computer was infected through some malicious file or website. In order to unlock the screen victims have to use a code that can be purchased for $100 in Bitcoins or by sending this amount of money via Perfect Money online payment system. Victims are warned that they have to pay a ransom within 2 hours, after that all their files will be deleted (wiped). Fortunately, the screen can be unlocked for free with the "BlackKnight2020" (case sensitive) code. It is worthwhile to mention that cyber criminals behind screen lockers often do not send any codes, passwords that supposed to unlock the screen locked by their malware. Therefore, users who would become victims of such attacks should not pay a ransom. Typically, access to data can be regained by uninstalling malware from the operating system, or by restoring files from a backup. Instructions on how to do that are provided below.

Threat Summary:
Name BlackKnight2020 malware
Threat Type Ransomware, Crypto Virus, Files locker
Ransom Demanding Message Locked screen
Ransom Amount $100
Payment Channels Perfect Money (U24482992), Bitcoin wallet address
Cyber Criminal Contact
Detection Names AVG (Win32:Trojan-gen), ESET-NOD32 (MSIL/LockScreen.AIW), Kaspersky (HEUR:Trojan-Ransom.MSIL.Agent.gen), Microsoft (Trojan:Win32/Wacatac.C!ml), Full List Of Detections (VirusTotal)
Unlock Code BlackKnight2020 (case sensitive)
Symptoms Cannot access the oprating system. A ransom demand message is displayed on your desktop. Cyber criminals demand payment of a ransom (usually in bitcoins) to unlock the screen.
Distribution methods Infected email attachments (macros), torrent websites, malicious ads.
Damage Operating system cannot be accessed without paying a ransom. Additional password-stealing trojans and malware infections can be installed together with a ransomware infection.
Malware Removal (Windows)

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More examples of other malware that is designed to lock victim's screen are ComputerDestroyer, Rubly and StalinLocker. As a rule, programs of this type block access to a computer and display a ransom note. Most screen lockers do not use encryption algorithms (do not encrypt files) and are classified as non-encrypting malware. Although, there are ransomware-type programs that are designed not only to encrypt files but also to lock the screen.

How did ransomware install on my computer?

Most common ways to proliferate malware are by using unofficial software activation ('cracking') tools, malspam campaigns, Trojans, third party software updating tools and various unreliable software download channels. Users who use software 'cracking' (unofficial activation) tools to bypass activation of licensed software often infect computers with malware. It is because such tools often are designed by cyber criminals who seek to trick users into installing malware by themselves. Spam campaigns can cause damage through malicious attachments or websites/website links designed to download malicious files. It is common that cyber criminals send emails that contain attachments that, when opened, infect computers with one or another malicious software. Examples of files (attachments) that can be used to distribute such software Microsoft Office documents (like Word, Excel), executable files (like .exe), archive files (like RAR, ZIP), PDF documents, JavaScript files. Trojans are malicious programs that are designed to infect systems with other malware. When installed, they cause chain infections. Fake, unofficial software updaters infect systems by exploiting outdated software's bus and flaws, or by installing malware instead of fixes, updates. Unreliable software download channels can lead to that when their users open malicious files downloaded through them. Examples of such channels are Peer-to-peer networks (like torrent clients, eMule), freeware download websites, free file hosting pages, third party downloaders, unofficial pages. It is common that malicious files are distributed through them by disguising those files as regular, harmless, legitimate.

How to avoid installation of potentially unwanted applications?

Links, attachments in irrelevant emails should not be opened, especially if they are received from unknown, suspicious addresses. Such emails should be always carefully analyzed before opening their contents. Software should be downloaded only from official websites and via direct links. Unofficial pages, third party downloaders (and installers), and other channels, sources that are mentioned above should not be trusted. Furthermore, it is important to update and activate software properly. To be more precise, it should be done by using implemented functions (or tools) that are designed, provided by official software developers. All the other tools often are used to distribute malware, besides, it is not legal to activate licensed software with unofficial, third party tools. And finally, a computer should be regularly scanned with a reputable antivirus or anti-spyware software, that software should be always up to date. If your computer is already infected with PUAs, we recommend running a scan with Malwarebytes for Windows to automatically eliminate them.

Text in a ransom note:

Your Computer has been locked !


Your Computer has been locked and functions disabled, this is because you accessed
a bad file or you accessed a bad link. Which ever be the case click
the button "Get me Outta Here"


[Get me Outta Here]


Getting Out is Pretty Easy....


-- Make a payment of $100 using any of the mentioned payment portal

** Perfect Money (U24482992)

-- Send payment confirmation to email


-- After confirmation the unlock code will be sent to you


DONT BE A SMART A**. The lockscreen has a timer and this is set to drive wipe after 2 hours.
As it stands your drive is currently unaccessible.


Enter the code you received from us [Unlock]

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Malwarebytes is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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Quick menu:

"BlackKnight2020" virus removal:

Step 1

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer starting process press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Go to the Windows 8 Start Screen, type Advanced, in the search results select Settings. Click on Advanced Startup options, in the opened "General PC Settings" window select Advanced Startup. Click on the "Restart now" button. Your computer will now restart into "Advanced Startup options menu". Click on the "Troubleshoot" button, then click on "Advanced options" button. In the advanced option screen click on "Startup settings". Click on the "Restart" button. Your PC will restart into the Startup Settings screen. Press "5" to boot in Safe Mode with Networking Prompt.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

Step 2

Log in to the account infected with the "BlackKnight2020" virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.

If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.

Video showing how to remove viruses using "Safe Mode with Command Prompt" and "System Restore":

1. During your computer starting process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.

Boot your computer in Safe Mode with Command Prompt

2. When Command Prompt Mode loads, enter the following line: cd restore and press ENTER.

system restore using command prompt type cd restore

3. Next, type this line: rstrui.exe and press ENTER.

system restore using command prompt rstrui.exe

4. In the opened window, click "Next".

restore system files and settings

5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the "BlackKnight2020" virus infiltrating your PC).

select a restore point

6. In the opened window, click "Yes".

run system restore

7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remnants of the "BlackKnight2020" virus.

If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some viruses disable Safe Mode making it's removal complicated. For this step, you require access to another computer. After removing "BlackKnight2020" virus from your PC, restart your computer and scan it with legitimate anti-spyware software to remove any possible remnants of this security infection.

Other tools known to remove this scam:

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
BlackKnight2020 malware QR code
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