Qasvc.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Qasvc.exe executable file comes from a harmful program that can accurately be defined as a coin miner trojan virus. That malware form utilizes your hardware to mine cryptocurrencies, generally – Monero or DarkCoin1. It makes your personal computer almost nonfunctional because of high CPU use.
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What is Qasvc.exe process?

Qasvc.exe is a malicious process created by coin miner virus

As I have actually pointed out before, Qasvc.exe is a coin miner virus. The names of the executive file can be diverse, however, the consequences are almost always the identical. Because coin miners focus on cryptocurrency mining, they utilize all possible hardware power of your desktop to perform this operation. This virus does not pay attention to the fact that you may want to use your PC for other tasks – it will always use over 80% of your CPU power.

Qasvc.exe Windows Process

Qasvc.exe – Extremely high CPU/GPU usage

Besides CPU consumption, some of the coin miners also make use of GPU power for their operations. In that situation, you will probably struggle even to see the mouse cursor moving – GPU is often used on 100%. It is not as important as CPU for system work, so Qasvc.exe coin miner viruses don’t waste time on trifles and use all of it. It sometimes can result in bad effects.

Shortly about cryptocurrency mining

Crypto mining is a term that means the activity of calculating the transaction block hash. That is a basic element of anything based on the blockchain technology. Since this action takes a lot of calculations, a high-end desktop is needed. Exactly, the video card is better for this purpose, because they have more cores available. Cryptomining farms usually consist of tens and hundreds of video cards to complete their task efficiently. Such systems are not usable for “general” purposes, like gaming or browsing the Web. Crooks who make profit via this coin miner use someones’ PCs instead, even if they are used for the regular activity.2

List of the typical coin miner symptoms

  • Your device overheats (system unit/laptop body is very hot)
  • You are not able to open your apps or they are opening for ages
  • Unknown process is running in the background and consumes your PC resources
  • Windows Defender does not respond
  • How dangerous is the Qasvc.exe miner?

    Coin miners does not deal damage to your files. However, they make a lot of unpleasant things with the whole system

    First, Qasvc.exe malware makes your PC overloaded. It is not able to run your applications anymore, because all CPU power is consumed by a malware. That malware does not care for your wants, all it focuses on is generating profits on you. Even if you are patient, and you waited until web browser is open, you will likely experience exceptionally slow performance. Pages will open up for years, any kind of logins will take about a minute – just a headache for a person who works online.

    Qasvc.exe Technical Summary.

    File NameQasvc.exe
    TypeTrojan Coin Miner
    Detection NameTrojan:Win32/CoinMiner
    Distribution MethodSoftware bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behaviorQaadminagent.exe, Psadminagent.exe, Gamingservicesnet.exe
    RemovalDownload and install GridinSoft Anti-Malware for automatic Qasvc.exe removal.

    “Visible” harm is not a single negative activity coin miners perform to your system. Qasvc.exe coin miner also deals damage to your OS. To perform all malicious operations correctly, it ruins the protection components of your system. You will likely see your Microsoft Defender disabled – malware halts it to avoid recognition. If you open the HOSTS file, you will likely see a load of new notes – they are added by this coin miner to connect your computer to a malicious cryptomining network. All these adjustments are about to be gone back to the original in the process of PC recovery.

    Hardware effects of coin miner activity

    Besides slowing down your computer, performing at peak power for long times can cause damage to your device as well as raise electricity costs. Hardware components are designed to easily get along with high load, but they can do so only when they are in a good shape.

    Compact and well-protected processor fan is hard to crack. Meanwhile, graphic cards have large and easy-to-access fans, which can be easily broke if touched while running, for instance, by the user much earlier before the coin-miner injection. Malfunctioning cooling system, together with the really high load caused by Qasvc.exe virus can easily lead to graphic card failure3. Graphic cards are also prone to have very fast wearing when used for crypto mining. It is surely a bad case when the performance of your GPU plunges 20-30% just after 1-2 weeks of being used in such a way.

    How did I get Qasvc.exe coin miner virus?

    Coin miners are spread through different ways, but their main sources are malicious banners and programs from dubious sources

    Coin miners are one of the most common malevolent programs among “severe” malware. Adware often serves as a carrier for Qasvc.exe malware infiltration: it shows you the banners, which include a link to malware downloading. Yes, this abstract “malware” can belong to any type – another adware, spyware, rogue or backdoor. But the statistics say that about 30% of all malware spread with the malevolent banners are coin miners – and Qasvc.exe is just with them.4

    Unwanted banners adware

    The example of malicious banners you can see in the Internet

    An additional way you could get this thing on your PC is by downloading it from the untrustworthy web page as a part of a program. Users that spread hacked variants of favored programs (which do not need the license key) have small chances to earn money. For this reason, there is a very big lure to add in malware to the final package of the hacked application and receive a coin for every setup. Prior to criticizing these people for hacking and also malware distribution, ask yourself – is it okay to avoid purchasing the program in this manner? It is much cheaper to pay $20-$30 at once than to pay a much bigger sum for antivirus software and new parts for your computer.

    How to remove the Qasvc.exe miner from my PC?

    The best way to get rid of this coin miner virus is to use anti-malware software

    Getting rid of such a virus requires using special software. Appropriate antivirus must have high efficiency at scanning and also be lightweight – in order to create no problems with utilization also on weak systems. Furthermore, it is better to have proactive protection in your security solution – to stop the virus even before it starts. Microsoft Defender does not have these features for different reasons. That’s why I’d recommend you to use a third-party anti-malware program for that reason. GridinSoft Anti-Malware is a great choice that fits all of the specified qualities.5

    Before the malware removal, it is important to boot your Windows into Safe Mode with Networking. Since Qasvc.exe miner takes a lot of CPU capacity, it is required to stop it before launching the security program. Otherwise, your scan will last for years, even though the GridinSoft program is pretty lightweight.

    Booting the PC into Safe Mode with Networking

    Press the Start button, then choose Power, and click on Reboot while holding the Shift key on the keyboard.

    Boot into Windows Safe Mode

    Windows will reboot into recovery mode. In that mode, choose Troubleshoot→ Startup Settings→ Safe Mode with Networking. Press the corresponding button on your keyboard to choose that option.

    windows safe mode boot option with command prompt

    When your computer is in Safe Mode, all third-party apps, just like the majority of non-crucial operating system components, are not started with the system start. That gives you the ability to clean the computer without dealing with high CPU usage of the coin miner.

    Remove Qasvc.exe coin miner virus with GridinSoft Anti-Malware

    Download and install GridinSoft Anti-Malware. You can use this anti-malware program for free during its 6-day trial period. In that term, all functions are available, and it takes no payments to remove malware from your system.

    GridinSoft Anti-Malware free trial

    After activating your free trial, start Full scan. It may last up to 10 minutes. You may use the PC as usual.

    Scanning in GridinSoft Anti-Malware

    When the scan is finished, press the Clean Now button to remove all detected elements from your system. This procedure takes less than a minute.

    GridinSoft Anti-Malware after the scan process

    Now, you are good to go. Reboot your PC into a normal Windows mode and use just as there was nothing malicious.

    Remove Qasvc.exe Virus ⛏️ Trojan Coin Miner

    Name: Qasvc.exe

    Description: The Qasvc.exe is a Trojan Coin Miner that uses the infected computer’s sources to mine electronic money without your authorization. This Qasvc.exe will create your CPU to go for very warm temperatures for prolonged periods of time, which could reduce the life of the CPU.

    Operating System: Windows

    Application Category: Trojan

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    References

    1. Read about why Monero and DarkCoin are so popular amongst cybercriminals.
    2. Detailed explanation of how does cryptomining work.
    3. About unwanted effects for GPUs in the process of cryptomining.
    4. Read more about various malware type on Cybersecurity Glossary.
    5. Our review on GridinSoft Anti-Malware.

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    About the author

    Robert Bailey

    I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

    As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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