Btwrsupportservice.exe Virus (Coin Miner Trojan) Removal

Btwrsupportservice.exe executable file is a benevolent executable file that belongs to Broadcom Bluetooth by Broadcom. It should not create any problems while running.

In the vast majority of cases, Btwrsupportservice.exe is a legitimate process. However, there’s always a possibility that malware hijaked its name to hide itself in the Task Manager. In such a situation, you will also see a high CPU load coming from the Btwrsupportservice.exe process.

What is Btwrsupportservice.exe process?

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

As I have actually pointed out in the previous paragraph, Btwrsupportservice.exe is a legit process. Nonetheless, its name may be hijacked by malware, in order to conceal itself in a system. The main visible sign of malignant origins of the process is high CPU load – up to 80%. For some systems it may be choking, especially when you’re trying to perform CPU-intensive tasks.

Btwrsupportservice.exe Windows Process

Btwrsupportservice.exe – Very high CPU/GPU use

Another way to recognize a malicious copy is to check a file location. Originally, the Btwrsupportservice.exe is located in C:\Windows\System32 folder. You can check the file location by clicking it in the Task Manager with right mouse button, and choosing “Open file location” in the dialogue box. Seeing locations other than mentioned mean that you are dealing with malware.

Shortly about cryptocurrency mining

Cryptocurrency mining is a term that means the action 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 strong PC is needed. Exactly, the video card is better for this purpose, because they have more cores available. Cryptomining farms are usually constructed of dozens of GPUs to conduct their activity effectively. Such systems are not usable for “usual” purposes, like gaming or browsing the Web. Fraudsters who gain money via this coin miner use someones’ PCs instead, even if they are used for the regular activity.

List of the typical coin miner symptoms

  • Extremely bad performance
  • CPU/GPU cooler fan creates a lot of noise
  • High temperature of the device (for laptops)
  • 80-90% consumption of CPU/GPU resources by an unknown process
  • Microsoft Defender is not working
  • |

  • 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
  • |

  • 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 Btwrsupportservice.exe miner?

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

    Initially, Btwrsupportservice.exe malware makes your system overloaded. It is not able to run your applications anymore, because all CPU power is used by a virus. That malware does not care for your necessities, all it pays attention to is making money on you. Even if you are patient, and you waited until browser is open, you will likely struggle with extremely sluggish performance. Pages will open for years, any sort of logins will take about a minute – just a nightmare for a person who works online.

    Btwrsupportservice.exe Technical Summary.

    File Name Btwrsupportservice.exe
    Type Trojan Coin Miner
    Detection Name Trojan:Win32/CoinMiner
    Distribution Method Software bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behavior Synrpcserver.exe, Litssvc.exe, Ibmpmsvc.exe
    Removal Download and install GridinSoft Anti-Malware for automatic Btwrsupportservice.exe removal.

    “Visible” damage is not a single bad thing coin miners perform to your system. Btwrsupportservice.exe coin miner also deals damage to your OS. To execute all malevolent functions correctly, it ruins the protection features of your system. You will likely see your Microsoft Defender disabled – malware stops it to prevent recognition. If you open the HOSTS file, you will likely see a lot of new notes – they are added by this trojan miner to connect your computer to a malicious mining network. All these changes shall be reverted to the initial state in the process of PC recovery.

    Hardware effects of coin miner activity

    Besides decreasing your computer’s performance, running at peak level for long times can trigger damage to your machine and increase electricity costs. PC elements are created to easily get along with high load, but they are good with it only when they are in a good shape.

    Little and covered CPU fan is hard to crack. Meanwhile, graphic cards have big and easy-to-access fans, which can be easily cracked if touched while spinning, for instance, by the user much earlier before the malware injection. Malfunctioning cooling system, together with the unusually high load caused by Btwrsupportservice.exe malware can easily lead to GPU failure1. Video cards are also tend to have increased wearing when utilized for crypto mining. It is likely a bad situation when the performance of your graphic card plunges 20-30% just after several weeks of being used in such a way.

    How did I get Btwrsupportservice.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 widespread malevolent programs among “serious” viruses. Adware often functions as a carrier for Btwrsupportservice.exe malware injection: 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. But the statistics say that around 30% of all malware spread with the malicious banners are coin miners – and Btwrsupportservice.exe is just among them.

    Unwanted banners adware

    The example of malicious banners you can see in the Internet

    One more way you could get this item on your PC is by downloading it from the dubious website as a part of a program. People who spread hacked versions of favored programs (which do not require the license key) have small chances to get paid. Hence, there is a very big temptation to add malware to the final package of the hacked application and get a coin for each setup. Before blaming these individuals for hacking and also malware spreading, ask yourself – is it alright to avoid paying for the program in this manner? It is more affordable to pay $20-$30 one time than to pay a much greater sum for antivirus program and new parts for your PC.

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

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

    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 system is in Safe Mode, all third-party applications, just like the majority of non-critical system components, are not launched with the system start. That gives you the ability to clean the PC without dealing with high processor usage of the coin miner.

    References

    1. About unwanted effects for GPUs in the process of cryptomining.

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    About the author

    Robert Bailey

    Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

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