How to get rid of Dupzom malware?

Also Known As: Dupzom malware downloader
Type: Trojan
Distribution: Low
Damage level: Severe

Dupzom virus removal guide

What is Dupzom?

Dupzom is the name of a Trojan which is designed to operate as a malware downloader. It is designed to cause chain infections by downloading and executing malicious files that would infect computers with additional malware. Dupzom could cause installation of some ransomware, remote administration/access Trojan (RAT), cryptocurrency miner, or other high-risk malware. Therefore, if there is any reason to believe that a computer is infected with Dupzom or any other similar malware, then such threats should be eliminated from it immediately.

Dupzom malware

It is common that Trojans like Dupzom are used as tools to distribute various ransomware. Victims of ransomware attack cannot access their files because software of this type encrypts them with some strong encryption algorithm. Typically, cyber criminals behind certain ransomware are the only ones who have a tool and/or key that can decrypt files that were encrypted by it. Another type of malware that cyber criminals often distribute through such downloaders are various RATs. Typically, when a RAT is installed on a computer, it allows a cyber criminal behind it to control victim's device remotely. Such software allows a cyber criminal to access files, acquire login credentials (and other personal information), download and execute various files (including malicious ones), take screenshots, access webcam, microphone, and/or perform other actions. Furthermore, Dupzom could be used to install some cryptocurrency miner too. Programs of this type use computer resources (such as GPU, CPU) to mine cryptocurrency by solving complex mathematical problems. Simply said, cyber criminals attempt to infect computers with such programs so they could use them to generate revenue. Infected computers begin to work slower or do not respond at all, consume more electricity. Also, installed miner could cause unexpected system crashes/shutdowns that may cause permanent loss of some unsaved data. To sum up, having a computer infected with Dupzom can be the reason behind of installation of other malware that could cause problems like data, monetary loss, loss of sensitive information, issues related to online privacy, browsing safety, identity theft and/or other serious issues.

Threat Summary:
Name Dupzom malware downloader
Threat Type Trojan, password-stealing virus, banking malware, spyware.
Detection Names Avast (Win32:Trojan-gen), BitDefender (Gen:Variant.Doris.2805), ESET-NOD32 (A Variant Of Win32/TrojanDownloader.Agent.CXA), Kaspersky (Backdoor.Win32.Farfli.brzh), Full List (VirusTotal)
Malicious Process Name(s) myBase Desktop 7.x (its name may vary)
Payload Dupzom can be used to distribute a variety of malicious programs
Symptoms Trojans are designed to stealthily infiltrate the victim's computer and remain silent, and thus no particular symptoms are clearly visible on an infected machine.
Distribution methods Infected email attachments, malicious online advertisements, social engineering, software 'cracks'.
Damage Stolen passwords and banking information, identity theft, the victim's computer added to a botnet.
Malware Removal (Windows)

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More examples of malware that operates similarly to Dupzom (is designed to spread other malware) are HimeraLoader, Ostap, and ZLoader. Cyber criminals behind programs of this type use them as tools to cause installation of some other malware that would help them to generate revenue in other or another way. Typically, users download and install software like Dupzom. Examples of how computers get infected with malicious software (including malware downloaders like Dupzom) are provided in the next paragraph.

How did Dupzom infiltrate my computer?

Typically, users install malware through spam campaigns, untrustworthy software download channels, software 'cracking' tools or and fake software updaters. Malware installations through spam campaigns (emails) happen when recipients open/execute malicious attachments or web links that download malicious files that are included in emails. Typically, cyber criminals attach malicious Microsoft Office, PDF documents, executable files (like .exe), archive files like RAR, ZIP or JavaScript files. Another way install malicious programs is through various software download channels that should not be trusted. For example, Peer-to-Peer networks like torrent clients, eMule, free file hosting websites, third party downloaders, freeware download pages, unofficial websites, and so on. Such channels are used to distribute malicious files by disguising them as harmless, legitimate. When users download and open/execute them, they install malicious software. Unofficial activation ('cracking') tools are unofficial programs that supposed to activate licensed software for free. Nevertheless, quite often these tools do not activate any programs and infect computers with high-risk malware instead. Unofficial software updating tools infect systems by installing malware instead of updates, fixes for some installed software, or by exploiting its bugs, flaws, of outdated software.

How to avoid installation of malware?

It is strongly recommended not to open files (attachments) and website links that are presented in irrelevant emails and/or emails that are received from unknown, suspicious addresses. The safest option is to ignore them (leave them unopened). All files and programs should be downloaded only from official and trustworthy webistes and through direct links. Unofficial websites, third party downloaders, installers, Peer-to-Peer networks, and other channels of this kind often are used as tools to proliferate, distribute malicious files and programs. Software and operating system has to be updated and activated via implemented functions and/or tools that are designed by official developers. Third party tools can be and often are the reason behind installation of malware. Also, software that requires activation should never be activated through third part, unofficial tools because it is not legal. And finally, it is important  to have a reputable antivirus or anti-spyware software installed on the operating system perform scans with it regularly. Also, such software should be always up to date. If you believe that your computer is already infected, we recommend running a scan with Malwarebytes for Windows to automatically eliminate infiltrated malware.

Dupzom's malicious process running in Task Manager as "myBase Desktop 7.x" (its name may vary):

dupzom trojan malicious mybase desktop 7 x process

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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How to remove malware manually?

Manual malware removal is a complicated task - usually it is best to allow antivirus or anti-malware programs to do this automatically. To remove this malware we recommend using Malwarebytes for Windows. If you wish to remove malware manually, the first step is to identify the name of the malware that you are trying to remove. Here is an example of a suspicious program running on a user's computer:

malicious process running on user's computer sample

If you checked the list of programs running on your computer, for example, using task manager, and identified a program that looks suspicious, you should continue with these steps:

manual malware removal step 1Download a program called Autoruns. This program shows auto-start applications, Registry, and file system locations:

screenshot of autoruns application

manual malware removal step 2Restart your computer into Safe Mode:

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":


manual malware removal step 3Extract the downloaded archive and run the Autoruns.exe file.

extract and run autoruns.exe

manual malware removal step 4In the Autoruns application, click "Options" at the top and uncheck "Hide Empty Locations" and "Hide Windows Entries" options. After this procedure, click the "Refresh" icon.

Click 'Options' at the top and uncheck 'Hide Empty Locations' and 'Hide Windows Entries' options

manual malware removal step 5Check the list provided by the Autoruns application and locate the malware file that you want to eliminate.

You should write down its full path and name. Note that some malware hides process names under legitimate Windows process names. At this stage, it is very important to avoid removing system files. After you locate the suspicious program you wish to remove, right click your mouse over its name and choose "Delete".

locate the malware file you want to remove

After removing the malware through the Autoruns application (this ensures that the malware will not run automatically on the next system startup), you should search for the malware name on your computer. Be sure to enable hidden files and folders before proceeding. If you find the filename of the malware, be sure to remove it.

searching for malware file on your computer

Reboot your computer in normal mode. Following these steps should remove any malware from your computer. Note that manual threat removal requires advanced computer skills. If you do not have these skills, leave malware removal to antivirus and anti-malware programs. These steps might not work with advanced malware infections. As always it is best to prevent infection than try to remove malware later. To keep your computer safe, install the latest operating system updates and use antivirus software.

To be sure your computer is free of malware infections, we recommend scanning it with Malwarebytes for Windows.

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.

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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.

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Dupzom malware downloader QR code
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