Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB — Crysan Trojan Removal Guide

Written by Wilbur Woodham
If you spectate the alert of Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB detection, it seems that your system has a problem. All malicious programs are dangerous, with no deviations. Crysan is a malicious application that aims at exposing your computer to further malware injection.

The majority of the modern malware variants are complex, and can inject various other viruses. Getting the Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB virus often equals to getting a malicious thing which is able to act like spyware or stealer, downloader, and a backdoor. Spectating this detection means that you must perform the removal as fast as you can.

Any type of malware exists with the only target – gain money on you1. And the developers of these things are not thinking about ethicality – they utilize all available methods. Grabbing your private data, receiving the payments for the promotions you watch for them, exploiting your hardware to mine cryptocurrencies – that is not the full list of what they do. Do you want to be a riding steed? That is a rhetorical question.

What does the pop-up with Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB detection mean?

The Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB detection you can see in the lower right corner is shown to you by Microsoft Defender. That anti-malware software is quite OK at scanning, however, prone to be mainly unreliable. It is prone to malware attacks, it has a glitchy user interface and bugged malware removal features. Therefore, the pop-up which says about the Crysan is simply an alert that Defender has recognized it. To remove it, you will likely need to use another anti-malware program.

Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB found

Microsoft Defender: “Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB”

The exact Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB infection is a really unpleasant thing. It sits inside of your Windows under the guise of something legitimate, or as a part of the application you downloaded at a forum. Then, it makes all possible steps to make your system weaker. At the end of this “party”, it injects other malicious things – ones which are wanted by cybercriminals who control this virus. Hence, it is impossible to predict the effects from Crysan actions. And the unpredictability is one of the baddest things when we are talking about malware. That’s why it is better not to choose at all, and don’t let the malware to complete its task.

Threat Summary:

NameCrysan Trojan
DetectionTrojan:MSIL/TrojanDownloader.Crysan.OE!MTB
DetailsCrysan tool that looks legitimate but can take control of your computer.
Fix ToolSee If Your System Has Been Affected by Crysan Trojan

Is Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB dangerous?

As I have actually pointed out before, non-harmful malware does not exist. And Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB is not an exclusion. This virus alters the system setups, edits the Group Policies and registry. All of these things are vital for proper system operating, even when we are not talking about Windows security. Therefore, the virus which Crysan contains, or which it will inject after some time, will try to get maximum profit from you. Crooks can grab your personal information, and then push it at the black market. Using adware and browser hijacker functionality, built in Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB malware, they can make profit by showing you the ads. 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 not easy to trace the sources of malware on your computer. Nowadays, things are mixed up, and spreading methods chosen by adware 5 years ago can be utilized by spyware nowadays. But if we abstract from the exact spreading method and will think about why it works, the reply will be really simple – low level of cybersecurity knowledge. People press on promotions on weird sites, click the pop-ups they get in their browsers, call the “Microsoft tech support” assuming that the strange banner that states about malware is true. It is very important to understand what is legitimate – to prevent misconceptions when attempting to find out a virus.

Microsoft Tech Support Scam

Microsoft Tech Support Scam

Nowadays, there are two of the most common tactics of malware spreading – bait e-mails and injection into a hacked program. While the first one is not so easy to stay away from – you should know a lot to recognize a fake – the 2nd one is simple to address: just don’t use cracked programs. Torrent-trackers and other providers of “free” applications (which are, exactly, paid, but with a disabled license checking) are just a giveaway place of malware. And Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB is simply among them.

How to remove the Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB from my PC?

Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB malware is incredibly difficult to erase by hand. It stores its data in several places throughout the disk, and can recover itself from one of the elements. Furthermore, countless changes in the windows registry, networking configurations and also Group Policies are really hard to identify and revert to the initial. It is better to use a special app – exactly, an anti-malware tool. GridinSoft Anti-Malware will definitely fit the best for virus elimination objectives.

Why GridinSoft Anti-Malware? It is pretty lightweight and has its detection databases updated almost every hour. In addition, it does not have such problems and exploits as Microsoft Defender does. The combination of these details makes GridinSoft Anti-Malware ideal for removing malware of any type.

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 Crysan the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - After Cleaning
How to Remove Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB Malware

Name: Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB

Description: If you have seen a message showing the “Trojan:MSIL/TrojanDownloader.Crysan.OE!MTB found”, it seems that your system is in trouble. The Crysan 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/TrojanDownloader.Crysan.OE!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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References

  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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