Trojan:Win32/Staser.BB!MTB — Staser Trojan Removal Guide

The Trojan:Win32/Staser.BB!MTB alert is detected by Microsoft Defender’s machine learning system. It identifies a malicious program that aims at various unwanted operations within your computer.

Trojan:Win32/Staser.BB!MTB is a dangerous malware that typically spreads through deceptive disguises in seemingly benign software or downloads from untrustworthy sources. Once it infiltrates a system, it acts as a multi-purpose threat, serving as spyware, stealer, downloader, and backdoor.

Threat Summary:

How to remove the Trojan:Win32/Staser.BB!MTB from my PC?

While manual removal of the threat is technically possible, I strongly discourage this method. In its pursuit of establishing persistence, Malware generates numerous instances of itself, making it exceedingly difficult to trace all its components manually. Consequently, manual removal can be time-consuming and often yield minimal to no results. Below, I have assembled a guide outlining the most effective removal practices for Trojan:Win32/Staser.BB!MTB.

Manual Trojan:Win32/Staser.BB!MTB Removal

You can remove Trojan:Win32/Staser.BB!MTB manually, through the system Settings app. Click the Windows button with the right mouse button and find Settings in the appeared list. In Settings, go to Apps → Installed Apps menu.

There, find the apps you do not remember installing. If you know a specific one that Avast/AVG is complaining on with the Win32/Uwamson detection, seek for them. Click the three-dot symbol to the right, and then choose “Uninstall”.

Reset your browser settings

You may see the list of options for each browser. By default, they are set up in a manner that fits the majority of users. Press the “Reset” button (lower right corner). In a minute your browser will be as good as new.

Reset your browsers manually

To reset Edge, do the following steps:

1. Open “Settings and more” tab in upper right corner, then find here “Settings” button. In the appeared menu, choose “Reset settings” option:

2. After picking the Reset Settings option, you will see the following menu, stating about the settings which will be reverted to original:

For Mozilla Firefox, do the next actions:

1. Open Menu tab (three strips in upper right corner) and click the “Help” button. In the appeared menu choose “troubleshooting information”:

2. In the next screen, find the “Refresh Firefox” option:

After choosing this option, you will see the next message:

If you use Google Chrome

1. Open Settings tab, find the “Advanced” button. In the extended tab choose the “Reset and clean up” button:

2. In the appeared list, click on the “Restore settings to their original defaults”:

3. Finally, you will see the window, where you can see all the settings which will be reset to default:

Opera can be reset in the next way

1. Open Settings menu by pressing the gear icon in the toolbar (left side of the browser window), then click “Advanced” option, and choose “Browser” button in the drop-down list. Scroll down, to the bottom of the settings menu. Find there “Restore settings to their original defaults” option:


2. After clicking the “Restore settings…” button, you will see the window, where all settings, which will be reset, are shown:

When the browsers are reset, you need to ensure that your browser will connect the right DNS while connecting to the web page you need. Create a text file titled “hosts” on your pc’s desktop, then open it and fill it with the following lines¹:

1. Official Microsoft guide for hosts file reset.