How to remove MassLogger malware from your operating system?

Also Known As: Mass Logger malware
Type: Trojan
Distribution: Low
Damage level: Severe

MassLogger virus removal guide

What is MassLogger?

MassLogger (also known as Mass Logger) is the name of a malicious program, classified as a keylogger and stealer malware. The primary purpose of MassLogger is data extraction; in other words, it is designed to steal information. What data this malware targets depends on the cyber criminals using it. Since this keylogger/stealer is available for purchase, the threat actors operating it can be varied, unconnected to one another and with varied goals. This program is a piece of highly dangerous software and is it crucial to remove MassLogger infections immediately.

MassLogger malware detection on VirusTotal

As a keylogger, MassLogger can record key strokes. This puts the privacy and security of typed information - at risk. Keylogging functionalities are typically used to steal log-in credentials (i.e. usernames and passwords) of various accounts - in order to hijack the accounts themselves. Financial information, such as banking account and/or credit card details are of interest as well. In its capacity as a stealer, MassLogger targets an extensive list of applications with the intent of extracting log-in credentials and other sensitive information stored in them. The targeted apps include (but are not limited to): browsers - Google Chrome, Mozilla Firefox, Opera, Yandex, Microsoft Edge (Chromium), Orbitum, Vivaldi, Brave; email clients - Outlook, Thunderbird, Foxmail; communication/messaging software - Discord, Pidgin, Telegram, QQ; VPN (Virtual Private Network) clients - NordVPN; FTP (File Transfer Protocol) clients - FileZilla. Through stolen email accounts, cyber criminals can gain access and control over other accounts associated to them, likewise with browsers that store log-in information. Communication accounts (e.g. emails, messengers, social networking, social media, etc.) can be misused to ask for loans from contacts/friends and/or to proliferate malware by sharing infectious files - under the guise of the genuine owner. Should sensitive and/or compromising content be found in data storage accounts - it can be used for blackmail. Accounts in some way connected to financial information (e.g. e-commerce, online money transfer, etc.) - often store said details, which can then be used by criminals to make fraudulent transactions, online purchases, and so on. To summarize, MassLogger infections can lead to financial losses, severe privacy issues and identity theft. Therefore, if it is suspected/known that this or other malware has already infected the system, it is crucial to use an anti-virus to remove it immediately.

Threat Summary:
Name Mass Logger malware
Threat Type Trojan, password-stealing virus, banking malware, spyware.
Detection Names AVG (Win32:RATX-gen [Trj]), BitDefender (Trojan.GenericKD.43104933), ESET-NOD32 (A Variant Of MSIL/Kryptik.VSQ), Kaspersky (HEUR:Backdoor.MSIL.Remcos.gen), Full List (VirusTotal)
Malicious Process Name(s) NwjHbAE (process name mat vary)
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)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Malwarebytes.
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SonbokliAria-body404 Keylogger and ProstoStealer are a few examples of other malicious programs, designed to steal information. While the exact functionalities/features of these programs differ, as does the modus operandi of the individuals using them - the end-goal is the same, to generate revenue to the cyber criminals behind them. Regardless of how malware operates or what it targets, such infections necessitate immediate removal - to ensure device and user safety.

How did MassLogger infiltrate my computer?

Malware is distributed in a variety of methods, most commonly via trojans, spam campaigns, illegal activation ("cracking") tools, fake updaters and untrustworthy download sources. Trojans are malicious programs with a wide range of functionalities, which can include the ability to cause chain infections (i.e. download/installation of additional malware). The term "spam campaign" describes a large scale operation, during which deceptive/scam emails are sent by the thousand. This mail contains download links of infectious files or has them attached to it. Virulent files can be in various formats (e.g. PDF and Microsoft Office documents, archive and executable files, JavaScript, etc.); when they are executed, run or otherwise opened - it initiates the infection process. Illegal activation tools ("cracks") can download/install malicious software, instead of activating the desired product. Illegitimate updaters cause infections by exploiting weaknesses of outdated products and/or by simply installing malware, rather than the promised updates. Dubious download channels, like: unofficial and free file-hosting sites, Peer-to-Peer sharing networks (BitTorrent, Gnutella, eMule, etc.) and other third party downloaders - can offer malicious programs, disguised as or bundled with ordinary content.

How to avoid installation of malware?

It is strongly advised against opening suspicious and/or irrelevant emails, especially any attachments or links found in them - as that can result in a high-risk infection. All downloads must be done from official and verified sources. It is just as important to activate and update products with tools/functions provided by genuine developers, as opposed to with malware-proliferating illegal activation ("cracking") tools and third party updaters. To protect device and user safety, it is paramount to have a dependable anti-virus/anti-spyware suite installed. Furthermore, this software must be kept updated, used to run regular system scans and to remove detected threats and issues. If you believe that your computer is already infected, we recommend running a scan with Malwarebytes for Windows to automatically eliminate infiltrated malware.

Screenshot of MassLogger's process on Windows Task Manager ("NwjHbAE"):

MassLogger malware process on task manager (NwjHbAE)

Screenshot of MassLogger's administration panel:

MassLogger admin panel

Screenshot of the website promoting MassLogger, from which it can be purchased:

Website used to sell MassLogger

Example of a spam email spreading MassLogger virus:

Spam email spreading MassLogger virus

Text presented within:

Subject: Cyber Security service offerings for Manufacturing Industries and RMG

Dear Sir

Greeting from PwC Bangladesh!!

I am Kazi Nazrul Islam on behalf of PwC in Bangladesh sending this letter to offer our Cybersecurity services to you. We are glad to offer you the cybersecurity services and hope to get an optimistic response from your side.

I am requesting you to kindly provide us with time for a short meeting through Webex/zoom or In-person for details discusses as per your convenient.

I am sure you would love to work with us and hence would love to render the necessary services.

Yours Truly.

Kazi Nazrul Islam

PwC | Sr.Consultant|One Cyber
Office: +8809612004000, Ext:4023 | Mobile: +8801817441511 | Fax: +88096120041000
PricewaterhouseCoopers Bangladesh Pvt Ltd
Laila Tower | 11th Floor | 8 Gulshan South Avenue | Gulshan 1 | Dhaka 1212 Bangladesh


The information transmitted, including any attachments, is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, re-transmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited, and all liability arising therefrom is disclaimed. If you received this in error, please contact the sender and delete the material from any computer.

Cyber criminals promoting MassLogger in a hacking forum:

Hacking forum used to promote Mass Logger (MassLogger) malware

Screenshot of yet another spam email used to spread MassLogger. The attachment is a .gz archive which contains a malicious executable:

MassLogger malware-spreading spam email

Text presented within:

Subject: Payment Schedule

The payment for the attached invoice will be made today 3/08/2020
please reconfirm the banking details to enable me proceed

Accounts Department
mm ray

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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.

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Removal Instructions in other languages
Malware activity

Global malware activity level today:

Medium threat activity

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

QR Code
Mass Logger malware 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 Mass Logger malware on your mobile device.
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