How to uninstall UPPER ransomware from the operating system?

Also Known As: UPPER virus
Distribution: Low
Damage level: Severe

UPPER ransomware removal instructions

What is UPPER?

Discovered by dnwls0719, UPPER is the name of a ransomware-type malicious program. It operates by encrypting data and demanding payment for the decryption. As this ransomware encrypts, all affected files are appended with the ".UPPER" extension. For example, a file like "1.jpg" would appear as "1.jpg.UPPER" - following encryption. Once this process is complete, a ransom note - "infoUPPER.txt" is created on the desktop.

The ransom-demanding message in "infoUPPER.txt", informs victims that their files have been encrypted. It instructs users to establish contact with the cyber criminals behind the infection, via email. The victims' letters must contain the unique key, which is present in the ransom note. The message states that only the criminals responsible for the attack can restore the compromised data. The size of the ransom is not mentioned in this note. Before paying the unspecified sum, users can test decryption. Victims can attach up to two encrypted text or image files (no larger than 1Mb each) to their emails, and the criminals will send them back - decrypted. Yet, if users attempt to cheat and send a database, the ransom will double. Unfortunately, in most cases of such attacks, without the involvement of cyber criminals responsible - decryption is impossible. It may be, if the ransomware is still in development and/or has bugs/flaws. Whatever the case, it is expressly advised against meeting the ransom demands. Since often, despite paying - victims do not receive the promised decryption tools. Therefore, not only does their data remain worthless, but they also experience significant financial losses. To prevent UPPER from further encryptions, it must be removed from the operating system. However, removal will not restore already affected files. The sole viable solution is recovering them from a backup, if one was created prior to the infection and was stored in a different location.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

UPPER decrypt instructions (infoUPPER.txt)

Hack For LifeNpskProLock and Velar are a few examples of other ransomware. Malware within this classification is designed to encrypt data of infected systems, in order to demand ransoms for the decryption tools/software. There are several crucial differences between these programs/infections: the cryptographic algorithms they use (symmetric or asymmetric) and the size of the demanded payment. The ransoms usually range between three and four digits (in USD). Cyber criminals typically request digital currencies (mainly, cryptocurrencies), due to transactions of them being difficult/impossible to trace. To ensure data safety, it is highly recommended to keep backups in remote servers and/or unplugged storage devices (ideally, in multiple different locations).

How did ransomware infect my computer?

Ransomware and other malware primarily spread via spam campaigns, trojans, illegal activation ("cracking") tools, illegitimate updates and untrustworthy download channels. The term "spam campaign" defines large scale operations, during which deceptive/scam emails are sent by the thousand. These letters are commonly presented as "official", "important", "priority" and similar; they can even mention and/or be disguised as mail from legitimate organizations, institutions, companies, services and so on. The emails have infectious files attached to (or linked inside) them. Malicious files can be in various formats (e.g. PDF and Microsoft Office documents, archive and executable files, JavaScript, etc.) and when they are opened - it triggers the infection process. In other words, opening such files initiates download/installation of malware. Trojans are malicious programs, designed to cause chain infections. Rather than activate licensed product, illegal activation tools ("cracks") can download/install malicious software. Fake updaters cause infections by abusing flaws of outdated products and/or by simply installing malware instead of the updates. Malicious content can be unintentionally downloaded from untrustworthy download channels (e.g. unofficial and free file-hosting websites, Peer-to-Peer sharing networks and other third party downloaders).

Threat Summary:
Name UPPER virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension .UPPER
Ransom Demanding Message infoUPPER.txt
Cyber Criminal Contact and
Detection Names Avast (Win32:Malware-gen), BitDefender (Gen:Heur.Ransom.REntS.Gen.1), ESET-NOD32 (A Variant Of Win32/Filecoder.NSF), Kaspersky (Trojan.Win32.DelShad.cvf), Full List Of Detections (VirusTotal)
Symptoms Cannot open files stored on your computer, previously functional files now have a different extension (for example, my.docx.locked). A ransom demand message is displayed on your desktop. Cyber criminals demand payment of a ransom (usually in bitcoins) to unlock your files.
Distribution methods Infected email attachments (macros), torrent websites, malicious ads.
Damage All files are encrypted and cannot be opened without paying a ransom. Additional password-stealing trojans and malware infections can be installed together with a ransomware infection.

To eliminate malware infections our security researchers recommend scanning your computer with Spyhunter.
▼ Download Spyhunter
Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

How to protect yourself from ransomware infections?

Dubious and/or irrelevant emails should not be opened, especially any attachments (or links) present in them - as that can result in a malware infection. Only official and verified download sources should be used. It is also recommended to always activate and update software with tools/functions, provided by genuine developers. Illegal activation ("cracking") tools and third party updaters should not be used, as it is common for them to be used for malware proliferation. To protect device integrity and user safety, it is paramount to have a dependable anti-virus installed. Furthermore, it must be kept up-to-date, used to run regular system scans and to remove detected threats/issues. If your computer is already infected with UPPER, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Text presented in UPPER ransomware's text file ("infoUPPER.txt"):

You have your data been crypted
Contact us with key 72c5fc9250
1 -
2 -
There is no other way to get you files back, only we have key for dceryption
Free decryption as guarantee!
Before paying you send us up to 2 files for free decryption.
Send pictures, text files. (files no more than 1mb)
If you upload the database, your price will be doubled

Screenshot of files encrypted by UPPER (".UPPER" extension):

Files encrypted by UPPER ransomware (.UPPER extension)

UPPER ransomware removal:

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Quick menu:

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 start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and 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: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

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 UPPER 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 ransomware virus using "Safe Mode with Command Prompt" and "System Restore":

1. During your computer start 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 UPPER ransomware 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 remaining UPPER ransomware files.

To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of UPPER are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.

To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.

Restoring files encrypted by CryptoDefense

If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.

To regain control of the files encrypted by UPPER, you can also try using a program called Shadow Explorer. More information on how to use this program is available here.

shadow explorer screenshot

To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as UPPER ransomware.

Note that Windows 10 Fall Creators Update includes a "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default, this feature automatically protects files stored in the Documents, Pictures, Videos, Music, Favorites, and Desktop folders.

Controll Folder Access

Windows 10 users should install this update to protect their data from ransomware attacks. Here is more information on how to get this update and add an additional protection layer from ransomware infections.

HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:

hitmanproalert ransomware prevention application

Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:

malwarebytes anti-ransomware

  • The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.

Other tools known to remove UPPER ransomware:

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.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

Our malware removal guides are free. However, if you want to support us you can send us a donation.

Malware activity

Global malware activity level today:

Medium threat activity

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

QR Code
UPPER virus QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of UPPER virus on your mobile device.
We Recommend:

Get rid of Windows malware infections today:

Download Spyhunter

Platform: Windows

Editors' Rating for Spyhunter:
Editors ratingOutstanding!

[Back to Top]

Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.