Win32:Trojan-gen

Win32:Trojan-gen is a generic detection for a computer Trojan. Avast and other antivirus programs uses this detection method to identify an unclassified threat. It was also used to detect several variants of Trojan that has similar characteristics and payload. Due to the nature of this Trojan, it is still not confirmed as to what variants it belongs. The term Win32:Trojan-gen aims to detect a threat that has backdoor capability allowing a remote attacker to take control of the infected computer. Furthermore, this threat tries to steal sensitive data from the PC like user name and password. It can also mean security risks that can contact a remote server and download other malware onto the compromised system.

With the existence of Win32:Trojan-gen, computer is not the only one in danger. Confidential information of computer users is also at risk. It can cause identity theft for the victim. Win32:Trojan-gen may allow an attacker to manipulate the system, download and upload files, execute a program, and update the Trojan. It can also install another malware from a distant server.

It may take several database update before your installed antivirus program can classify Win32:Trojan-gen and give it a unique detection. One thing is for sure, when your antivirus software pop-up an alert about this threat, your PC is in great danger. Thus, start running a scan using your installed security program. As much as possible, clean the infection files first. If cannot be cleaned, better keep it into quarantine area so that it may not spread the infection to other files.

TypeTrojan
Sub-TypeBackdoor
OS AffectedWindows XP, Windows Vista, Windows 7

What are the Symptoms of Win32:Trojan-gen Infection?

Win32:Trojan-gen Avast

Win32:Trojan-gen is a common detection method to identify a type of threat with similar characteristics. There is no typical symptom for this threat except for constant alert shown by installed antivirus software. See sample screenshot above.

Follow these Procedures to Remove Win32:Trojan-gen

Procedure 1: Start Computer in Safe Mode

Restart your computer in Safe Mode with Networking

- After turning On the power of the computer, just before Windows start, press F8. This is a quick process, so you must press F8 button very timely. Failure to enter this mode will start Windows normally. In that case, you need to turn off the PC again and repeat the process.

- From the selections, choose Safe Mode with Networking. Please use keyboard's arrow up/down to navigate between selections and press Enter to proceed. Safe Mode boots slower than normal and your screen will be in low-resolution format. If it prompts you at boot-up, please proceed to Safe Mode. Loaded driver and processes are minimal so expect that other devices on the computer will not be available during this mode.

SafeMode Networking

Procedure 2: Scan and remove Win32:Trojan-gen files with MalwareBytes Anti-Malware

To remove Win32:Trojan-gen, download Malwarebytes Anti-Malware by clicking on the button below. This tool is effective in getting rid of Trojans, viruses and malware.

Download Win32:Trojan-gen Removel Tool

1. After downloading, please install the program using the default settings.
2. At the end of the installation, please make sure that it will download necessary updates.
3. Once update has completed. The tool will launch.
4. Thoroughly scan the computer and remove all threats detected by this anti-malware program.

Procedure 3: Run TrendMicro's Fake Antivirus Remover (ATTK) to check and delete any remnants of Win32:Trojan-gen.

As an added help to remove Win32:Trojan-gen, you can scan the computer with Fake Antivirus Removal Tool. This software is provided and distributed by TrendMicro. Follow this procedure to run a scan with this tool.

1. Download the package by clicking on the button below. This will launch a new browser window that contains further details about the tool.

FakeAVRemover Download Link

2. Save the file to a location on your hard drive.
3. Browse for the location of the file and double-click to run. If you are using Windows Vista or Windows 7, right-click on extracted file attk_far_gui.exe and click on Run as Administrator.

Run FakeAVRemover

4. When program launch, it will run a command prompt to initialize, prepare components, and update the program.
5. Next it will open the graphical user interface (GUI) of Anti-Threat Toolkit.

FakeAVRemover GUI

6. Click on Scan Now. This operation will scan all Win32:Trojan-gen files and processes in your computer and display a list of result for possible Fake Antivirus program and malware that needs to be removed.

FakeAVRemover Scan

7. Tick all items that are detected by the program, and then click Clean. The tool will start removing Win32:Trojan-gen components from the computer.
8. If it asked you to restart Windows, please do so.

Procedure 4: Remove Rootkit Trojan with Avast aswMBR

A Trojan often drops malware using an advance technology known as rootkit. It hides the installation of Win32:Trojan-gen from your anti-virus program and injects malicious code to running Windows processes. To complete the clean-up process, you also need to scan and remove rootkit Trojan.

1. Download aswMBR from Avast server. Save it to your computer.

Avast Rootkit Scanner

2. Double-click on the file aswMBR.exe to run the program.
3. If it prompts you to download the latest Avast! virus definition, please click Yes. This is necessary to identify most recent version of the Trojan as well as hidden files of Win32:Trojan-gen.

Updating aswMBR

4. Click on Scan button to start checking your computer for presence of rootkit Trojan and other viruses. It will display a message "Scan finished successfully" when done.

aswMBR Scan

5. Click Fix or FixMBR to start removing infection. If aswMBR contains the latest Avast! virus definition file, it will automatically clean infected files on your PC.

Protect your PC from Win32:Trojan-gen or Similar Attack

Turn On Security Features of your Internet Browser

Internet Explorer - Activate SmartScreen Filter

Internet Explorer versions 8 and 9 has this feature called SmartScreen Filter. It helps detect phishing web sites and protect you from downloading malicious files online. You may have avoided Win32:Trojan-gen virus if this has been active on your PC.To turn on SmartScreen Filter, follow these steps:

1. Please open Internet Explorer.
2. On top menu, select Tools (IE 9). For IE 8, please look for Safety menu.
3. Select SmartScreen Filter from the drop-down list and click on Turn on SmartScreen Filter.

IE SmartScreen Filter

4. Please restart Internet Explorer.

Google Chrome's Enable Phishing and Malware Protection

With Google Chrome's Phishing and Malware Detection feature, you will have lesser risks browsing the web. It will display a warning when the site you are trying to visit is suspicious. To enable Phishing and Malware Protection, please do these steps:

1. Open Google Chrome.
2. Click on the Customize and control Google Chrome (3-Bars Icon) located on top right corner of the browser.
3. Select Settings from the drop-down list.
4. Once on the settings page, click on Show advanced settings... at the bottom of the page to see the rest of the Chrome setup.
5. Locate Privacy section and mark 'Enable phishing and malware protection'.

Chrome Security Settings

6. Please restart Google Chrome. New settings keep your browser safe while surfing the web.

Mozilla Firefox - Block Attack Sites and Web Forgeries

Phishing and Malware Protection is a built-in feature on Firefox version 3 or later. It warns you when a page you are trying to visit contains phishing content or an attack site designed to drop threats on the computer. To help you keep safe while browsing the Internet using Firefox, please follow this guide:

1. Open Mozilla Firefox browser.
2. On top menu, click on Tools. Then select Options from the list.
3. Select Security and put a check mark on the following items:

  • Warn me when sites try to install add-ons
  • Block reported attack sites
  • Block reported web forgeries

Firefox Security Settings

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