Backdoor:Win32/QuasarRAT.A — QuasarRAT Backdoor Removal Guide

Written by Wilbur Woodham
If you spectate the notification of Backdoor:Win32/QuasarRAT.A detection, it seems that your computer has a problem. All malicious programs are dangerous, with no exceptions. QuasarRAT delivers the cybercriminals access to your PC, or even connects it to the botnet.
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Any malware exists with the only target – make money on you1. And the developers of these things are not thinking of morality – they utilize all possible ways. Grabbing your private data, receiving the payments for the ads you watch for them, utilizing your PC 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 notification with Backdoor:Win32/QuasarRAT.A detection mean?

The Backdoor:Win32/QuasarRAT.A detection you can see in the lower right side is shown to you by Microsoft Defender. That anti-malware application is good at scanning, but prone to be basically unreliable. It is vulnerable to malware attacks, it has a glitchy interface and bugged malware clearing features. For this reason, the pop-up which states concerning the QuasarRAT is rather just an alert that Defender has spotted it. To remove it, you will likely need to make use of another anti-malware program.

Backdoor:Win32/QuasarRAT.A found

Microsoft Defender: “Backdoor:Win32/QuasarRAT.A”

The exact Backdoor:Win32/QuasarRAT.A virus is a really unpleasant thing. This malware is developed to be a sneaky burglar, which serves as a remote-access tool. When you provide someone else remote access willingly, it is okay, but QuasarRAT will not ask you if you want to provide it. After connecting to your system, crooks are free to do whatever they want – grabbing your files, browsing your messages, gathering personal information, et cetera. Backdoors commonly carry a supplementary stealer – the virus that is developed to collect all possible data about you. However, a lot more prevalent use of the backdoors is creating the botnet. After that, the network of infected PCs can be put to use to conduct DDoS attacks or to inflate the survey results on various websites.

Backdoor Summary:

NameQuasarRAT Backdoor
DetectionBackdoor:Win32/QuasarRAT.A
DamageGain access to the operating system to perform various malicious actions.
SimilarSmokeloader, Msil Dcrat, Rewritehttp, Msil Darkcommet, Msbuildbypass, Dcrat, Msil Simda, Manuscrypt
Fix ToolSee If Your System Has Been Affected by QuasarRAT backdoor
Shortly about backdoors

Backdoors are viruses that can acquire both separated and integrated shapes. Once you can find that a legitimate program from a famous developer has a functionality that allows someone to connect to your system. Will it be someone from the developers or a third party – nobody knows. However, the scandal when this feature is identified in a legitimate program is nearly impossible to miss. There is also chatter that there is a hardware-based backdoor in Intel CPUs2.

Is Backdoor:Win32/QuasarRAT.A dangerous?

As I have actually stated previously, non-harmful malware does not exist. And Backdoor:Win32/QuasarRAT.A is not an exception. This backdoor does not deal a lot of harm just after it releases. Nevertheless, it will be a really unpleasant surprise when an occasional forum or page in the Web will not let you in, because your IP-address is banned after the DDoS attack. But even if it is not vital for you – is it enjoyable in any way to realize that someone else can easily access your PC, read your conversations, open your documents, and spectate what you do?

The spyware that is frequently present as a supplement to the Backdoor:Win32/QuasarRAT.A malware will be just one more reason to remove it as fast as you can. Nowadays, when users’ information is valued remarkably high, it is too silly to give the burglars such a chance. Even worse if the spyware will in some way manage to take your financial info. Seeing zeros on your bank account is the worst headache, in my point of view.

How did I get this virus?

It is not easy to trace the origins of malware on your computer. Nowadays, things are mixed up, and distribution methods used by adware 5 years ago can be used by spyware these days. However, if we abstract from the exact spreading tactic and will think about why it has success, the explanation will be really uncomplicated – low level of cybersecurity understanding. People click on promotions on odd websites, open the pop-ups they receive in their web browsers, call the “Microsoft tech support” believing that the odd banner that states about malware is true. It is important to recognize what is legit – to prevent misconceptions when attempting to figure out a virus.

Microsoft tech support scam

Microsoft tech support scam page

Nowadays, there are two of the most widespread ways of malware distribution – bait e-mails and injection into a hacked program. While the first one is not so easy to stay away from – you must know a lot to understand a fake – the second one is easy to address: just don’t utilize hacked apps. Torrent-trackers and various other sources of “totally free” applications (which are, exactly, paid, but with a disabled license checking) are just a giveaway place of malware. And Backdoor:Win32/QuasarRAT.A is just amongst them.

How to remove the Backdoor:Win32/QuasarRAT.A from my PC?

Backdoor:Win32/QuasarRAT.A malware is extremely difficult to erase by hand. It stores its documents in numerous locations throughout the disk, and can recover itself from one of the elements. In addition, a range of modifications in the registry, networking settings and also Group Policies are quite hard to discover and revert to the initial. It is better to utilize a specific app – exactly, an anti-malware app. GridinSoft Anti-Malware will fit the most ideal for malware elimination reasons.

Why GridinSoft Anti-Malware? It is pretty lightweight and has its detection databases updated nearly every hour. Additionally, it does not have such bugs and exposures as Microsoft Defender does. The combination of these aspects makes GridinSoft Anti-Malware suitable for removing 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 QuasarRAT the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - After Cleaning
How to Remove Backdoor:Win32/QuasarRAT.A Malware

Name: Backdoor:Win32/QuasarRAT.A

Description: If you have seen a message showing the “Backdoor:Win32/QuasarRAT.A found”, it seems that your system is in trouble. The QuasarRAT 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 Backdoor:Win32/QuasarRAT.A 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: Backdoor

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References

  1. Read about malware types on GridinSoft Threat encyclopedia.
  2. Gossip about the backdoor in Intel processors on Reddit.

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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