Trojan:MSIL/CobaltWebshell.AA — CobaltWebshell Trojan Removal Guide

Written by Wilbur Woodham
If you spectate the alert of Trojan:MSIL/CobaltWebshell.AA detection, it appears that your PC has a problem. All malicious programs are dangerous, with no deviations. CobaltWebshell is a malware that aims at opening your system to further threats. The majority of the modern virus examples are complex, and can inject various other viruses. Getting the Trojan:MSIL/CobaltWebshell.AA 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 must to perform the removal as fast as you can.
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Any kind of malware exists with the only target – make money on you1. And the programmers of these things are not thinking of morality – they utilize all possible tactics. Taking your private data, receiving the comission for the ads you watch for them, utilizing your hardware to mine cryptocurrencies – that is not the complete list of what they do. Do you want to be a riding steed? That is a rhetorical question.

What does the notification with Trojan:MSIL/CobaltWebshell.AA detection mean?

The Trojan:MSIL/CobaltWebshell.AA detection you can see in the lower right corner is demonstrated to you by Microsoft Defender. That anti-malware software is good at scanning, but prone to be generally unreliable. It is prone to malware invasions, it has a glitchy interface and bugged malware removal features. Thus, the pop-up which states concerning the CobaltWebshell is simply an alert that Defender has identified it. To remove it, you will likely need to use another anti-malware program.

Trojan:MSIL/CobaltWebshell.AA found

Microsoft Defender: “Trojan:MSIL/CobaltWebshell.AA”

The exact Trojan:MSIL/CobaltWebshell.AA infection is a really nasty thing. It is present into your Windows under the guise of something legitimate, or as a part of the app you downloaded from 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 crooks who control this virus. Hence, it is almost impossible to predict the effects from CobaltWebshell actions. And the unpredictability is one of the most upleasant things when it comes to malware. That’s why it is better not to choose at all, and don’t give it even a single chance to complete its task.

Threat Summary:

Name CobaltWebshell Trojan
Detection Trojan:MSIL/CobaltWebshell.AA
Details CobaltWebshell tool that looks legitimate but can take control of your computer.
Fix Tool See If Your System Has Been Affected by CobaltWebshell Trojan

Is Trojan:MSIL/CobaltWebshell.AA dangerous?

As I have mentioned , non-harmful malware does not exist. And Trojan:MSIL/CobaltWebshell.AA is not an exception. This malware changes the system setups, alters the Group Policies and Windows registry. All of these components are critical for proper system functioning, even in case when we are not talking about Windows safety. Therefore, the malware which CobaltWebshell carries, or which it will inject later, will try to get maximum profit from you. Crooks can grab your data, and then push it at the black market. Using adware and browser hijacker functions, embedded in Trojan:MSIL/CobaltWebshell.AA malware, they can make revenue by showing you the advertisements. 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 line the origins of malware on your computer. Nowadays, things are mixed up, and spreading ways chosen by adware 5 years ago may be used by spyware these days. But if we abstract from the exact distribution tactic and will think about why it works, the explanation will be pretty simple – low level of cybersecurity awareness. Individuals press on ads on strange websites, click the pop-ups they receive in their web browsers, call the “Microsoft tech support” believing that the scary banner that states about malware is true. It is very important to understand what is legitimate – to prevent misunderstandings when attempting to determine a virus.

Microsoft Tech Support Scam

Microsoft Tech Support Scam

Nowadays, there are two of the most widespread tactics of malware spreading – bait e-mails and also injection into a hacked program. While the first one is not so easy to avoid – you should know a lot to recognize a counterfeit – the 2nd one is simple to handle: just don’t use cracked applications. Torrent-trackers and various other providers of “free” applications (which are, exactly, paid, but with a disabled license checking) are really a giveaway place of malware. And Trojan:MSIL/CobaltWebshell.AA is simply among them.

How to remove the Trojan:MSIL/CobaltWebshell.AA from my PC?

Trojan:MSIL/CobaltWebshell.AA malware is very hard to remove manually. It puts its data in several places throughout the disk, and can recover itself from one of the parts. In addition, numerous modifications in the registry, networking setups and also Group Policies are really hard to locate and change to the initial. It is much better to use a specific tool – exactly, an anti-malware program. GridinSoft Anti-Malware will definitely fit the best for malware removal reasons.

Why GridinSoft Anti-Malware? It is really lightweight and has its detection databases updated nearly every hour. Moreover, it does not have such bugs and weakness as Microsoft Defender does. The combination of these aspects 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 CobaltWebshell the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - After Cleaning
How to Remove Trojan:MSIL/CobaltWebshell.AA Malware

Name: Trojan:MSIL/CobaltWebshell.AA

Description: If you have seen a message showing the “Trojan:MSIL/CobaltWebshell.AA found”, it seems that your system is in trouble. The CobaltWebshell 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/CobaltWebshell.AA 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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