What is Grandoreiro? How to remove Grandoreiro Trojan from your PC or Mac?
The Grandoreiro Trojan is a malware threat categorized as a banking Trojan. Usually viruses of this category are delivered to the target users via complex attack campaigns. This particular threat is known for being spread using phishing strategies. The attacks are set against users worldwide. After the infection has been made the Grandoreiro Trojan can download other threats, launch multiple dangerous modules and steal files. The virus will hijack online banking and web service sessions.
Threat Summary
| Name | Grandoreiro Trojan |
| Type | Malware, Trojan |
| Short Description | A dangerous malware which can launch different components and start a Trojan module. |
| Symptoms | The victims may notice performance issues and can get infected with other malware. |
| Distribution Method | Common distribution tactics and direct web attacks. |
| Detection Tool |
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User Experience | Join Our Forum to Discuss Grandoreiro Trojan. |
Grandoreiro Trojan — Overview
The Grandoreiro Trojan is an advanced banking Trojan which leverages counterfeit plugins made for the Google Chrome web browser. This is a popular strategy which uses the so-called payload carrier method in order to send out the samples to the intended victims. At the moment the campaign is set against end users in Spain. Viruses like this one are spread as browser hijackers which are designed to spread as impersonating legitimate plugins made for commonly used web browsers. They are often uploaded to the relevant repositories, download portals or sent via SPAM email messages. In some cases the hackers responsible for the attacks may also link the files in social networks as well.
The Grandoreiro Trojan has been detected in an attack campaign which started in February 2020 using video messages sent via emails. It uses different elements and contents that are related to the Coronavirus pandemic to entice the recipients into clicking on an URL which will redirect to a website containing an infected .MSI file. This is a Microsoft Windows software installer which when run will lead to the Trojan infection.
Like other viruses of this category the Trojan will establish a secure connection to a hacker-controlled server allowing the criminals to take over control of the infected computers and steal data. The extension is named Google Plugin Version 1.5.0. is added to the browsers of the victims. The virus-infected extension will be programmed to read the data stored in the web browsers: history, notifications, bookmarks, cookies, preferences and any stored passwords. The mechanism of attack is to hijack browser cookies related to online services and banking in order hijack login sessions. The default behavior of the Grandoreiro Trojan is to wait until the users browse to one of the target services. When this is done the remote control functionality will be activated and the criminals will be able to view the user interactions and take over control of the sessions. At any time the Grandoreiro Trojan can shift its behavior in order to deploy other malware or institute other malicious actions.
How to Remove Grandoreiro Trojan
In order to fully remove Grandoreiro from your computer system, we recommend that you follow the removal instructions underneath this article. If the first two manual removal steps do not seem to work and you still see Grandoreiro or programs, related to it, we suggest what most security experts advise – to download and run a scan of your computer with a reputable anti-malware program. Downloading this software will not only save you some time, but will remove all of Grandoreiro files and programs related to it and will protect your computer against such intrusive apps and malware in the future.
Martin Beltov
Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.
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Preparation before removing Grandoreiro Trojan.
Before starting the actual removal process, we recommend that you do the following preparation steps.
- Make sure you have these instructions always open and in front of your eyes.
- Do a backup of all of your files, even if they could be damaged. You should back up your data with a cloud backup solution and insure your files against any type of loss, even from the most severe threats.
- Be patient as this could take a while.
- Scan for Malware
- Fix Registries
- Remove Virus Files
Step 1: Scan for Grandoreiro Trojan with SpyHunter Anti-Malware Tool
Step 2: Clean any registries, created by Grandoreiro Trojan on your computer.
The usually targeted registries of Windows machines are the following:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
You can access them by opening the Windows registry editor and deleting any values, created by Grandoreiro Trojan there. This can happen by following the steps underneath:
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.Step 3: Find virus files created by Grandoreiro Trojan on your PC.
1.For Windows 8, 8.1 and 10.
For Newer Windows Operating Systems
1: On your keyboard press + R and write explorer.exe in the Run text box and then click on the Ok button.
2: Click on your PC from the quick access bar. This is usually an icon with a monitor and its name is either “My Computer”, “My PC” or “This PC” or whatever you have named it.
3: Navigate to the search box in the top-right of your PC's screen and type “fileextension:” and after which type the file extension. If you are looking for malicious executables, an example may be "fileextension:exe". After doing that, leave a space and type the file name you believe the malware has created. Here is how it may appear if your file has been found:
N.B. We recommend to wait for the green loading bar in the navigation box to fill up in case the PC is looking for the file and hasn't found it yet.
2.For Windows XP, Vista, and 7.
For Older Windows Operating Systems
In older Windows OS's the conventional approach should be the effective one:
1: Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.
2: After the search window appears, choose More Advanced Options from the search assistant box. Another way is by clicking on All Files and Folders.
3: After that type the name of the file you are looking for and click on the Search button. This might take some time after which results will appear. If you have found the malicious file, you may copy or open its location by right-clicking on it.
Now you should be able to discover any file on Windows as long as it is on your hard drive and is not concealed via special software.
Grandoreiro Trojan FAQ
What Does Grandoreiro Trojan Trojan Do?
The Grandoreiro Trojan Trojan is a malicious computer program designed to disrupt, damage, or gain unauthorized access to a computer system. It can be used to steal sensitive data, gain control over a system, or launch other malicious activities.
Can Trojans Steal Passwords?
Yes, Trojans, like Grandoreiro Trojan, can steal passwords. These malicious programs are designed to gain access to a user's computer, spy on victims and steal sensitive information such as banking details and passwords.
Can Grandoreiro Trojan Trojan Hide Itself?
Yes, it can. A Trojan can use various techniques to mask itself, including rootkits, encryption, and obfuscation, to hide from security scanners and evade detection.
Can a Trojan be Removed by Factory Reset?
Yes, a Trojan can be removed by factory resetting your device. This is because it will restore the device to its original state, eliminating any malicious software that may have been installed. Bear in mind that there are more sophisticated Trojans that leave backdoors and reinfect even after a factory reset.
Can Grandoreiro Trojan Trojan Infect WiFi?
Yes, it is possible for a Trojan to infect WiFi networks. When a user connects to the infected network, the Trojan can spread to other connected devices and can access sensitive information on the network.
Can Trojans Be Deleted?
Yes, Trojans can be deleted. This is typically done by running a powerful anti-virus or anti-malware program that is designed to detect and remove malicious files. In some cases, manual deletion of the Trojan may also be necessary.
Can Trojans Steal Files?
Yes, Trojans can steal files if they are installed on a computer. This is done by allowing the malware author or user to gain access to the computer and then steal the files stored on it.
Which Anti-Malware Can Remove Trojans?
Anti-malware programs such as SpyHunter are capable of scanning for and removing Trojans from your computer. It is important to keep your anti-malware up to date and regularly scan your system for any malicious software.
Can Trojans Infect USB?
Yes, Trojans can infect USB devices. USB Trojans typically spread through malicious files downloaded from the internet or shared via email, allowing the hacker to gain access to a user's confidential data.
About the Grandoreiro Trojan Research
The content we publish on SensorsTechForum.com, this Grandoreiro Trojan how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific trojan problem.
How did we conduct the research on Grandoreiro Trojan?
Please note that our research is based on an independent investigation. We are in contact with independent security researchers, thanks to which we receive daily updates on the latest malware definitions, including the various types of trojans (backdoor, downloader, infostealer, ransom, etc.)
Furthermore, the research behind the Grandoreiro Trojan threat is backed with VirusTotal.
To better understand the threat posed by trojans, please refer to the following articles which provide knowledgeable details.