Bfsvc.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Bfsvc.exe process belongs to a malevolent program that can properly be defined as a coin miner virus. That malware type utilizes your PC components to mine cryptocurrencies, primarily – Monero or DarkCoin1. It makes your system pretty much unusable as a result of high CPU utilization.
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What is Bfsvc.exe process?

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

As I have pointed out earlier, Bfsvc.exe is a coin miner virus. The names of the executive file can be different, however, the impacts are usually the identical. Since coin miners aim at cryptocurrency mining, they use all possible hardware capacity of your PC to run this operation. This malware does not take note of the fact that you may want to use your device for other activities – it will always consume over 80% of your processor power.

Bfsvc.exe Windows Process

Bfsvc.exe – Really high CPU/GPU use

Besides CPU utilization, some of the coin miners also make use of GPU power for their operations. In that situation, you will probably struggle also to see the mouse arrow moving – GPU is usually used on 100%. It is not as essential as CPU for system work, so Bfsvc.exe coin miner viruses don’t waste time on trifles and utilize it all. It often may cause sad effects.

Shortly about cryptocurrency mining

Cryptocurrency mining is a term that means the activity of calculating the transaction block hash. That is a integral element of anything based on the blockchain technology. Since this action takes a lot of calculations, a very powerful PC is needed. Exactly, the GPU is better for this task, because they have more cores available. Cryptomining farms usually consist of dozens of GPUs to complete their task efficiently. Such computer systems are not usable for “general” purposes, like gaming or web browsing. 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

  • 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 Bfsvc.exe miner?

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

    Initially, Bfsvc.exe malware makes your system overloaded. It is unable to run your applications now, since all CPU power is consumed by a virus. That malware does not care for your needs, 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 extremely sluggish efficiency. Pages can open for years, any sort of logins will likely take about a minute – just a nightmare for a person who works online.

    Bfsvc.exe Technical Summary.

    File NameBfsvc.exe
    TypeTrojan Coin Miner
    Detection NameTrojan:Win32/CoinMiner
    Distribution MethodSoftware bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behaviorPowershell_ise.exe, Securityhealthhost.exe, Sechealthui.exe
    RemovalDownload and install GridinSoft Anti-Malware for automatic Bfsvc.exe removal.

    “Visible” damage is not a solitary unpleasant thing coin miners do to your system. Bfsvc.exe coin miner additionally deals damage to your OS. To conduct all malicious functions correctly, it wrecks the protection features of your system. You will likely see your Microsoft Defender disabled – malware stops it to avoid detection. If you check the HOSTS file, you will likely see a number of new entries – they are brought in by this coin miner to connect your PC to a malicious cryptomining network. All these changes shall be thrown back to the original in the process of computer recovery.

    Hardware effects of coin miner activity

    Besides decreasing your PC’s performance, performing at peak power for long times may trigger damage to your machine as well as increase power bills. Hardware elements are created to easily deal with high load, but they are good with it only when they are in a good shape.

    Little and well-protected CPU cooling system is hard to broke. Meanwhile, graphic cards have big and easy-to-access rotors, which can be easily cracked if affected while running, for instance, by the user much earlier before the malware injection. Malfunctioning cooling system, together with the unusually high load caused by Bfsvc.exe malware can easily lead to graphic card failure3. Graphic cards are also prone to have fast wearing when used for cryptocurrency mining. It is likely an undesirable case when the performance of your video card decreases on 20-30% only after 1-2 weeks of being used in such a way.

    How did I get Bfsvc.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 the most common malicious programs among “severe” malware. Adware frequently works as a carrier for Bfsvc.exe malware infiltration: it demonstrates you the banners, which contain a link to malware downloading. Sure, this abstract “malware” can belong to any kind – another adware, spyware, rogue or backdoor. But the statistics say that about 30% of all malware spread through the malevolent banners are coin miners – and Bfsvc.exe is right among them.4

    Unwanted banners adware

    The example of malicious banners you can see in the Internet

    An additional way you could get this item on your PC is by downloading it from the unreliable website as a part of a program. Users who spread hacked versions of popular programs (which do not demand the license key) have small chances to get paid. Therefore, there is a very big lure to add in malware to the final package of the hacked app and acquire a coin for each setup. Prior to blaming these individuals for hacking and also malware spreading, ask yourself – is it alright 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 as well as new parts for your desktop.

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

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

    Removing such a virus involves the use of specific app. Effective antivirus must have high performance at scanning and be lightweight – in order to make no problems with usage even on weak PCs. In addition, it is recommended to have proactive protection in your protection tool – to prevent the virus even before it launches. Microsoft Defender lacks these elements for different factors. That’s why I’d suggest you to use a third-party anti-malware program for that goal. GridinSoft Anti-Malware is a superb choice that fits all of the discussed characteristics.5

    Before the malware removal, it is important to boot your operating system into Safe Mode with Networking. Since Bfsvc.exe miner consumes a lot of CPU capacity, it is needed 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, along with the majority of non-critical Windows components, are not started with the system start. That gives you the ability to clean the PC without dealing with high CPU usage of the coin miner.

    Remove Bfsvc.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 Bfsvc.exe Virus ⛏️ Trojan Coin Miner

    Name: Bfsvc.exe

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