Tefosteal Malware

Also Known As: Tefosteal virus
Type: Trojan
Distribution: Low
Damage level: Severe

Tefosteal virus removal guide

What is Tefosteal?

Tefosteal, as its name suggests, is a malicious program that is designed to track/steal various information. It targets data such as cookies and various other credentials from browsers, data from Discord chats, information about basic service set identifiers (BSSIDs), and other system information. It is also capable of take screenshots. Having a program of this type installed might cause serious problems, it should be uninstalled as soon as possible.

Tefosteal malware

Malware-type programs often are designed to make money. However, not for regular users but for cyber criminals who attempt to infect people's computers with it. In this particular case, Tefosteal is designed to record various information that cyber criminals who spread it could use to generate revenue. It is known that one of the ways this program communicates with its distributors is via Telegram (messaging service). It puts all stolen information/data into ZIP archive files and then sends them to various malicious domains. Besides, Tefosteal is capable of deleting/uninstalling itself (together with files it writes stolen data to) without users noticing it. At the time of the research this malicious program was disguising itself as a "vk 3.9.exe" process in Task Manager. Programs of this type often are designed to be running as processes with as less suspicious names as possible. Having Tefosteal (or any other program that is capable of taking screenshots, recording credentials from browsers etc.) installed might cause problems related to privacy, browsing safety or even financial loss. It is a high-risk program that should be uninstalled as soon as possible.

There are hundreds malicious programs that, if installed, often cause serious problems. As a rule, these programs steal personal data and then cyber criminals use it to generate revenue in one or another way. Some of these high-risk infections could be capable of spreading other malicious programs, misusing system's resources and so on. Basically, these programs cause people financial and/or data loss, problems with privacy, further system damage etc. If there is a reason to believe that a computer is infected with a malicious program, it should be removed immediately. Here are some examples of other high-risk malicious programs: PhropiexMore_eggs, IcedID, Brushaloader, Beta Bot and KadrBot.

How did Tefosteal infiltrate my computer?

One of the ways Tefosteal can get installed is through spam campaigns. Cyber criminals send emails that contain some malicious attachments (Microsoft Office documents, JavaScript files, archives like ZIP, RAR, PDF documents, executables and so on) or web links. Once opened, they cause downloads and installations of a particular malicious program. Another way to spread viruses is through Trojans - malicious programs that are designed to cause chain infections. When installed, they download and install various malware. Fake software updaters are used to spread computer infections too. They, unlike official tools, download and install malware instead of expected/promised updates or software fixes. These tools can be used to exploit bugs, flaws of some outdated software as well. Software "cracking" tools can operate quite similarly: instead of activating some paid software for free, they install malicious programs. This is a quite common way to spread computer infections.

How to avoid installation of malware?

Emails received from unknown, suspicious addresses should be handled with care, especially if they contain web links or attachments. Presented attachments/links should not be opened without analyzing them first. If a received email is irrelevant, then it should be ignored. Furthermore, software should be activated properly. Various "cracking" tools cannot be trusted, besides, their usage is a cyber crime (it is not legal to use them to activate paid software/operating systems). Software should be updated using tools or implemented functions that are provided by official software developers only. We strongly recommend to use any other tools for that (fake/questionable third party updaters). Another important thing is to have a reputable anti-virus or anti-spyware software installed (and enabled). These programs usually are designed to be trustworthy at protecting operating systems from various threats. If you believe that your computer is already infected, we recommend running a scan with Spyhunter for Windows to automatically eliminate infiltrated malware.

Instant automatic removal of Tefosteal virus: 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 Tefosteal virus. 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.

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How to remove malware manually?

Manual malware removal is a complicated task, usually it's better to let antivirus or anti-malware programs do it automatically. To remove this malware we recommend using  Spyhunter 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's an example of a suspicious program running on 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 1 Download 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 Autoruns.exe file.

extract autoruns.zip 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 Autoruns application and locate the malware file that you want to eliminate.

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

locate the malware file you want to remove

After removing the malware through Autoruns application (this ensures that the malware won't 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 file 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 help remove any malware from your computer. Note that manual threat removal requires advanced computer skills, it's recommended to leave malware removal to antivirus and anti-malware programs. These steps might not work with advanced malware infections. As always it's better to avoid getting infected that try to remove malware afterwards. To keep your computer safe be sure to install latest operating system updates and use antivirus software.

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