Trojan:MSIL/Downloader.BL!MTB — Downloader Trojan Removal Guide

Written by Wilbur Woodham
If you spectate the alert of Trojan:MSIL/Downloader.BL!MTB detection, it seems that your computer has a problem. All viruses are dangerous, with no exceptions. Downloader is a malicious application that aims at opening your computer to further malware injection. The majority of the modern virus examples are complex, and can download various other viruses. Being infected with the Trojan:MSIL/Downloader.BL!MTB malware often equals to getting a thing which is able act like spyware or stealer, downloader, and a backdoor. Seeing this detection means that you need to perform the removal as fast as you can.
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Any kind of malware exists with the only target – generate profits on you1. And the programmers of these things are not thinking about morality – they use all available methods. Grabbing your private data, receiving the comission for the banners you watch for them, exploiting your PC to mine cryptocurrencies – that is not the full list of what they do. Do you like to be a riding equine? That is a rhetorical question.

What does the pop-up with Trojan:MSIL/Downloader.BL!MTB detection mean?

The Trojan:MSIL/Downloader.BL!MTB detection you can see in the lower right side is displayed to you by Microsoft Defender. That anti-malware software is quite OK at scanning, but prone to be mainly unstable. It is prone to malware invasions, it has a glitchy user interface and problematic malware clearing features. For this reason, the pop-up which states about the Downloader is just an alert that Defender has found it. To remove it, you will likely need to make use of a separate anti-malware program.

Trojan:MSIL/Downloader.BL!MTB found

Microsoft Defender: “Trojan:MSIL/Downloader.BL!MTB”

The exact Trojan:MSIL/Downloader.BL!MTB infection is a really undesirable thing. It sits inside of your system under the guise of something benevolent, or as a piece of the program you downloaded at a forum. After that, it makes all possible steps to make your system weaker. At the end of this “party”, it injects other viruses – ones which are wanted by cybercriminals who control this malware. Hence, it is almost impossible to predict the effects from Downloader actions. And the unpredictability is one of the baddest things when it comes to malware. That’s why it is better not to choose at all, and don’t let the malware to complete its task.

Threat Summary:

NameDownloader Trojan
DetailsDownloader tool that looks legitimate but can take control of your computer.
Fix ToolSee If Your System Has Been Affected by Downloader Trojan

Is Trojan:MSIL/Downloader.BL!MTB dangerous?

As I have pointed out before, non-harmful malware does not exist. And Trojan:MSIL/Downloader.BL!MTB is not an exclusion. This malware modifies the system setups, edits the Group Policies and registry. All of these elements are crucial for proper system functioning, even when we are not talking about PC security. Therefore, the malware which Downloader contains, or which it will download later, will try to get maximum profit from you. Crooks can steal your personal data, and then push it at the black market. Using adware and browser hijacker functions, embedded in Trojan:MSIL/Downloader.BL!MTB malware, they can make money by showing you the banners. Each view gives them a penny, but 100 views per day = $1. 1000 victims who watch 100 banners per day – $1000. Easy math, but sad conclusions. It is a bad choice to be a donkey for crooks.

How did I get this virus?

It is difficult to line the origins of malware on your computer. Nowadays, things are mixed up, and spreading methods utilized by adware 5 years ago can be used by spyware these days. However, if we abstract from the exact distribution method and will think of why it works, the reply will be quite simple – low level of cybersecurity awareness. Individuals press on advertisements on strange sites, open the pop-ups they receive in their web browsers, call the “Microsoft tech support” assuming that the odd banner that states about malware is true. It is essential to understand what is legitimate – to stay away from misconceptions when attempting to figure out a virus.

Microsoft Tech Support Scam

Microsoft Tech Support Scam

Nowadays, there are two of the most extensive ways of malware distribution – bait emails and injection into a hacked program. While the first one is not so easy to stay away from – you must know a lot to recognize a fake – the 2nd one is very easy to handle: just don’t use cracked apps. Torrent-trackers and various other sources of “free” applications (which are, in fact, paid, but with a disabled license checking) are just a giveaway place of malware. And Trojan:MSIL/Downloader.BL!MTB is just one of them.

How to remove the Trojan:MSIL/Downloader.BL!MTB from my PC?

Trojan:MSIL/Downloader.BL!MTB malware is extremely difficult to remove manually. It puts its documents in several locations throughout the disk, and can restore itself from one of the parts. Furthermore, countless modifications in the windows registry, networking settings and also Group Policies are pretty hard to find and change to the initial. It is better to utilize a specific tool – exactly, an anti-malware tool. GridinSoft Anti-Malware will fit the most ideal for virus removal reasons.

Why GridinSoft Anti-Malware? It is very light-weight and has its databases updated just about every hour. Moreover, it does not have such bugs and weakness as Microsoft Defender does. The combination of these details makes GridinSoft Anti-Malware suitable for clearing away malware of any form.

Remove the viruses with GridinSoft Anti-Malware

  • Download and install GridinSoft Anti-Malware. After the installation, you will be offered to perform the Standard Scan. Approve this action.
  • Gridinsoft Anti-Malware during the scan process

  • Standard scan checks the logical disk where the system files are stored, together with the files of programs you have already installed. The scan lasts up to 6 minutes.
  • GridinSoft Anti-Malware scan results

  • When the scan is over, you may choose the action for each detected virus. For all files of Downloader the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - After Cleaning
How to Remove Trojan:MSIL/Downloader.BL!MTB Malware

Name: Trojan:MSIL/Downloader.BL!MTB

Description: If you have seen a message showing the “Trojan:MSIL/Downloader.BL!MTB found”, it seems that your system is in trouble. The Downloader virus was detected, but to remove it, you need to use a security tool. Windows Defender, which has shown you this message, has detected the malware. However, Defender is not a reliable thing - it is prone to malfunction when it comes to malware removal. Getting the Trojan:MSIL/Downloader.BL!MTB malware on your PC is an unpleasant thing, and removing it as soon as possible must be your primary task.

Operating System: Windows

Application Category: Trojan

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  1. Read about malware types on GridinSoft Threat encyclopedia.

About the author

Wilbur Woodham

I was a technical writer from early in my career, and consider IT Security one of my foundational skills. I’m sharing my experience here, and I hope you find it useful.

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