What is Guildma? How to remove Guildma Trojan from your PC or Mac?
The Guildma Trojan is a malware threat which is rated as advanced when compared with other viruses of this type. Usually Trojan infections like this one are made by launching automated hacking toolkits or creating infected files. They are often made by taking the legitimate files from their official sources and modifying them with the necessary virus code. Other data can also be affected. All kinds of other data may be used as well — this includes malicious plugins for web browsers and etc. If any are found then the Guildma Trojan will be installed.
This particular threat is known for being spread using a multitude of weaknesses. The attacks are set against users worldwide. After the infection has been made the Guildma Trojan can download other threats, launch multiple dangerous modules and steal files.
Threat Summary
| Name | Guildma Trojan |
| Type | Malware, Trojan, Miner |
| 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 |
See If Your System Has Been Affected by malware
Download
Malware Removal Tool
|
User Experience | Join Our Forum to Discuss Guildma Trojan. |
Guildma Trojan — Overview
Guildma Trojan is an alternative name for a sample associated with Astaroth, another popular family of threats. It originates from Brazil and includes advanced functionality. Over the years several attacks carrying similar threats have been used by many hacking groups. Almost all of the attacks are carrid out against Brazilian networks. The distinct characteristic of the Trojan is that it is designed to act not so much as an ordinary remote control malware, but as a complex banking Trojan. However unlike most threats of its type it not only targets banks and financial organizations, but also online shops and streaming services.
It is spread mainly by phishing email messages which are sent out to the intended victims by using a SPAM-like strategy. These messages include attached files which are HTML web pages. When they are clicked on the web browsers will launch them. Usually they will contain download scripts that wil be run automatically and will lead to the initial payload delivery of the Guildma Trojan. An alternative is to attach archives which can be password-protected or self extracting. In the case of passwords they can be inserted in the contents of the emails.
The initial payload mechanism will be run via the Windows Explorer system process which means that many security software and services may not detect the infection. This is especially true when other related mechanisms are also used. The newer versions of the Trojan have been found to interact with a browser DLL function that is normally used to export bookmarks by the users. This simulates user interaction and will not raise awareness by the system and any anti-virus programs.
The main module is designed to carry out several malware actions as built into its behavior sequence:
- Security Bypass – The malware will scan the host computer for the presence of any installed security applications and services. If they are found the Trojan may either stop itself from running or attempt to bypass them.
- Information Gathering – Like other complex banking Trojans the Guildma one will create a report containing sensitive information about system. Generally this will include personal information about the users and machine details.
The malware is also programmed to gather email addresses and form data from the installed web browsers and email clients. This can be cross-referenced from other hijacked data in order to reveal banking service credentials. The Trojan functions of the malware contain a lot of capabilities that can be run on the victim systems. In comparison with other threats this version can take screenshots, capture user input (keyboard and mouse movement) and also deliver files from the hacker-controlled servers. The established secure connection allows the remote attackers to also carry out power actions (such as shutting down the computer) and also to retrieve other malware.
Its important to know that at any time the behavior and the installation sequence can change at any time. This is why the Guildma Trojan infections need to be removed as early as possible.
How to Remove Guildma Trojan
In order to fully remove Guildma 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 Guildma 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 Guildma 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.
Follow Me:
Preparation before removing Guildma 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 Guildma Trojan with SpyHunter Anti-Malware Tool
Step 2: Clean any registries, created by Guildma 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 Guildma 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 Guildma 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.
Guildma Trojan FAQ
What Does Guildma Trojan Trojan Do?
The Guildma 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 Guildma 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 Guildma 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 Guildma 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 Guildma Trojan Research
The content we publish on SensorsTechForum.com, this Guildma 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 Guildma 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 Guildma Trojan threat is backed with VirusTotal.
To better understand the threat posed by trojans, please refer to the following articles which provide knowledgeable details.