GuLoader virus removal guide
What is GuLoader?
GuLoader is a malware downloader that cyber criminals use to spread various Remote Access Trojans (RATs) and other trojan-type programs. They use GuLoader with a purpose to infect computers with malicious programs that can be used as tools to steal sensitive information, infect computers with other malware, and perform other actions that would help cyber criminals to generate revenue.
Research show that GuLoader is used to proliferate various RATs and stealers (malicious programs that are designed to collect sensitive data). RATs are programs that give cyber criminals control over infected computers/operating systems and allows them to log keystrokes, download and execute various files, access webcam, microphone, make screenshots, monitor computing activity, manage (copy, rename, delete) files, and perform other actions. In most cases cyber criminals attempt to steal credit card details, credentials (passwords, logins) of accounts that could be used to make fraudulent purchases, transactions and/or generate revenue in other ways. It is common that they use RATs as tools to infect computers with other malware like ransomware. Furthermore, GuLoader is commonly used to infect computers with malicious programs that are designed to steal sensitive information. Cyber criminals behind information stealers usually target banking-related details, passwords, logins, data saved on clipboard, and other sensitive information too. Basically, cyber criminals attempt to infect operating systems with GuLoader so they could cause chain infections. In other words, to infect computers wit some other malware that would help them to generate revenue. Victims of malware that is proliferated through GuLoader risk to suffer monetary and/or data loss, become victims of identity theft, experience problems related to online privacy, and other serious issues. Therefore, GuLoader or its payload is already installed on the operating system, then it should be eliminated from it immediately.
|Threat Type||Malware downloader|
|Detection Names||Avast (Win32:Trojan-gen), BitDefender (Trojan.GenericKD.33531900), ESET-NOD32 (A Variant Of Win32/Injector.EKYU), Kaspersky (Backdoor.MSIL.NanoBot.bbks), Full List (VirusTotal)|
|Payload||GuLoader can be used to infect systems with Agent Tesla, FormBook, LokiBot, NetWire, Remcos, Vidar and other malicious programs|
|Symptoms||Programs like GuLoader 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, data and/or monetary loss, problems with online privacy|
To eliminate malware infections our security researchers recommend scanning your computer with Spyhunter.
Some examples of malicious programs that cyber criminals can spread via GuLoader are Agent Tesla, FormBook, LokiBot, NetWire, Remcos and Vidar. However, they may use this downloader as a tool to infect systems with other malicious programs as well. In one way or another, their main goal is to get access to personal information, accounts or perform other actions that would give them an ability to generate revenue in fraudulent ways.
How did GuLoader infiltrate my computer?
How to avoid installation of malware?
Website links and attachments that are presented in irrelevant emails should not be trusted, especially if such emails are sent from unknown, suspicious addresses. If there is a reason to think that an email is untrustworthy, then the best option is to simply ignore it and leave its contents unopened. Software should be downloaded from official websites and via direct download links. Third party downloaders, installers, unofficial pages and other channels, tools should not be used. Furthermore, installed software must be updated and/or activated only with tools and/or functions that are designed (provided) by official developers. Third party updaters and activators can be (and often are) designed to install malware. Besides, it is not legal to bypass activation of licensed software with third party tools. One more way to keep operating systems safe is to scan them for viruses and other threats regularly. These scans should be performed with a reputable antivirus or anti-spyware software. If you believe that your computer is already infected, we recommend running a scan with Spyhunter for Windows to automatically eliminate infiltrated malware.
Text presented within this email:
Subject: URGENT NEED: U.S. Department of Health & Human Services/COVID-19 Face Mask/ Forehead thermometers
Due to the wild spread of COVID-19 all over the United States, the U.S. Department of Health & Human Services is in urgent demand of Face mask and forehead thermometers for it's citizens.
I will like if your company can supply us with the attached products list.
Awaiting your urgent reply.
U.S. Department of Health & Human Services
200 Independence Avenue, S.W.
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:
- What is GuLoader?
- STEP 1. Manual removal of GuLoader malware.
- STEP 2. Check if your computer is clean.
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 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 is an example of a suspicious program running on a user's computer:
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:
Download a program called Autoruns. This program shows auto-start applications, Registry, and file system locations:
Restart 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.
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.
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.
Video showing how to start Windows 10 in "Safe Mode with Networking":
Extract the downloaded archive and run the Autoruns.exe file.
In 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.
Check 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".
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.
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 Spyhunter for Windows.