Quickassist.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Quickassist.exe process is related to a harmful program that can properly be recognized as a coin miner virus. That malware type uses your hardware to mine cryptocurrencies, basically – Monero or DarkCoin1. It makes your system almost unfunctional as a result of high CPU utilization.
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What is Quickassist.exe process?

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

As I have actually specified in the introduction, Quickassist.exe is a coin miner trojan. The names of the executive file may be diverse, however, the effects are almost always the identical. Considering that coin miners aim at cryptocurrency mining, they use all possible hardware power of your PC to perform this procedure. This virus does not care about the fact that you may need to use your PC for other tasks – it will constantly use over 80% of your CPU power.

Quickassist.exe Windows Process

Quickassist.exe – Extremely high CPU/GPU usage

Besides CPU utilization, some of the coin miners additionally use GPU power for their tasks. In that situation, you will struggle also to see the mouse arrow moving – GPU is usually utilized on 100%. It is not as vital as CPU for system work, so Quickassist.exe coin miner viruses do not waste time on trifles and utilize it all. It sometimes may result in sad consequences.

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 very powerful PC is required. Exactly, the GPU is better for this task, because they have more cores available. Cryptocurrency mining farms are usually constructed of dozens of video cards to complete their task efficiently. Such computer systems are not usable for “classic” purposes, like gaming or browsing the Web. Fraudsters who gain money via this coin miner use someones’ hardware instead, even if they are used for the regular activity.2

List of the typical coin miner symptoms

  • Microsoft Defender is stopped;
  • CPU and GPU is loaded at 80-90% exactly after the system start
  • Cooling fans are running at high speed and create a lot of noise
  • A single process in Task Manager consumes all CPU and GPU power
  • How dangerous is the Quickassist.exe miner?

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

    First off, Quickassist.exe virus makes your system overloaded. It is not able to run your applications anymore, because all processor power is consumed by a malware. That malware does not care for your necessities, all it pays attention to is generating profits on you. Even if you are patient, and you waited until web browser is open, you will likely experience exceptionally sluggish efficiency. Pages will open for years, any kind of logins will take about a minute – just a nightmare for a person that does a job online.

    Quickassist.exe Technical Summary.

    File NameQuickassist.exe
    TypeTrojan Coin Miner
    Detection NameTrojan:Win32/CoinMiner
    Distribution MethodSoftware bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behaviorUploader.exe, Fcpaws.exe, Nwjs.exe
    RemovalDownload and install GridinSoft Anti-Malware for automatic Quickassist.exe removal.

    “Visible” damage is not a single bad thing coin miners do to your PC. Quickassist.exe coin miner likewise deals damage to your OS. To conduct all malicious functions properly, it wrecks the protection mechanisms 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 number of new notes – they are brought in by this coin miner to connect your PC to a malicious mining network. All these changes are about to be thrown back to the initial state in the process of computer recovery.

    Hardware effects of coin miner activity

    Besides slowing down your PC, running at peak level for long times may trigger damage to your machine as well as raise electricity expenses. PC components are created to easily deal with high load, but they can do so only when they are in a good shape.

    Tiny and well-protected CPU fan is hard to damage. Meanwhile, graphic cards have big and easy-to-access fans, which can be easily broke if affected while running, for example, by the user much earlier before the malware injection. Malfunctioning cooling system, together with the really high load caused by Quickassist.exe malware can easily lead to graphic card failure3. Graphic cards are also prone to have very fast wearing when used for cryptocurrency mining. It is surely a bad case when the performance of your GPU decreases on 20-30% only after several weeks of being used in such a way.

    How did I get Quickassist.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 “major” viruses. Adware frequently acts as a carrier for Quickassist.exe malware infiltration: it demonstrates you the banners, which contain a link to malware downloading. Yes, this abstract “malware” can belong to any kind – another adware, spyware, rogue or backdoor. However, the statistics say that around 30% of all malware spread with the malevolent banners are coin miners – and Quickassist.exe is just among them.4

    Unwanted banners adware

    The example of malicious banners you can see in the Internet

    One more way you could get this thing on your PC is by downloading it from the suspicious web page as a part of a program. People that spread hacked variants of well-known programs (which do not demand the license key) have small chances to get paid. Hence, there is a very big lure to include malware to the final package of the hacked application and acquire a coin for every setup. Before blaming these guys for hacking and also malware spreading, ask yourself – is it alright to avoid paying for the program in this manner? It is much cheaper to pay $20-$30 at once than to pay a much bigger figure for antivirus program as well as new parts for your PC.

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

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

    Eliminating such a virus involves using special app. Effective anti-malware program should have high performance at scanning and also be lightweight – in order to create no problems with usage even on weak PCs. In addition, it is better to have proactive security in your protection tool – to stop the virus even before it launches. Microsoft Defender does not have these features for various factors. That’s why I’d recommend you to use a third-party anti-malware program for that goal. GridinSoft Anti-Malware is a great choice that fits all of the specified features.5

    Before the malware removal, it is important to boot your system into Safe Mode with Networking. Since Quickassist.exe miner consumes a lot of CPU power, it is required to halt 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 programs, just like the majority of non-critical Windows components, are not started with the system start. That gives you the ability to clean the system without dealing with high CPU usage of the coin miner.

    Remove Quickassist.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 Quickassist.exe Virus ⛏️ Trojan Coin Miner

    Name: Quickassist.exe

    Description: The Quickassist.exe is a Trojan Coin Miner that uses the infected computer’s sources to mine electronic money without your authorization. This Quickassist.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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