Decrypt_bit.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Decrypt_bit.exe executable file belongs to a malevolent program that can correctly be recognized as a coin miner virus. That malware type utilizes your hardware to mine cryptocurrencies, primarily – Monero or DarkCoin1. It makes your computer pretty much unusable due to high CPU utilization.
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What is Decrypt_bit.exe process?

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

As I have mentioned in the introduction, Decrypt_bit.exe is a coin miner virus. The names of the .exe file can be different, however, the consequences are almost always the same. Considering that coin miners focus on cryptocurrency mining, they use all available hardware power of your PC to run this process. This virus does not pay attention to the fact that you may want to use your computer for other activities – it will always use over 80% of your CPU power.

Decrypt_bit.exe Windows Process

Decrypt_bit.exe – Extremely high CPU and GPU usage

Besides CPU usage, some of the coin miners also make use of GPU power for their operations. In that case, you will likely struggle even to see the mouse cursor moving – GPU is usually used on 100%. It is not as important as processor for system work, so Decrypt_bit.exe coin miner viruses do not waste time on trifles and use it all. It sometimes can cause unhappy consequences.

Shortly about cryptocurrency mining

Crypto mining term means the action of calculating the transaction block hash. That is a integral part of anything based on the blockchain technology. Since this action takes a lot of calculations, a strong computer is required. Exactly, the video card is better for this task, because they have more cores available. Cryptocurrency mining farms are usually constructed of tens and hundreds of GPUs to conduct their activity effectively. Such computer systems are not usable for “classic” purposes, like gaming or browsing the Web. Crooks 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 Decrypt_bit.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, Decrypt_bit.exe virus makes your PC overloaded. It is not able to run your applications now, since all CPU power is consumed by a virus. That malware does not care for your wants, all it focuses on is generating income on you. Even if you are patient, and you waited until browser is open, you will likely experience extremely slow performance. Pages can open for years, any kind of logins will likely take about a minute – just a horror story for a person who does a job online.

    Decrypt_bit.exe Technical Summary.

    File NameDecrypt_bit.exe
    TypeTrojan Coin Miner
    Detection NameTrojan:Win32/CoinMiner
    Distribution MethodSoftware bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behaviorNewx.exe, Coin.miner, Csrsc.exe
    RemovalDownload and install GridinSoft Anti-Malware for automatic Decrypt_bit.exe removal.

    “Visible” damage is not a solitary unpleasant activity coin miners do to your personal computer. Decrypt_bit.exe coin miner additionally deals damage to your OS. To complete all malicious operations successfully, it ruins the security features of your system. You will likely see your Microsoft Defender disabled – malware halts it to prevent recognition. If you open the HOSTS file, you will likely see a load of new entries – they are added by this trojan miner to connect your system to a malicious mining network. All these changes are about to be gone back to the initial state in the process of computer recovery.

    Hardware effects of coin miner activity

    Besides slowing down your computer, performing at peak power for long times may trigger damage to your device and raise electricity bills. PC elements are created to easily deal with high load, but they can do so only in case when they are in a good shape.

    Compact and covered CPU fan is hard to crack. Meanwhile, graphic cards have big and easy-to-access fans, which can be easily cracked if affected while spinning, for instance, by the user much earlier before the coin-miner injection. Malfunctioning cooling system, together with the really high load caused by Decrypt_bit.exe virus can easily lead to graphic card failure3. Video cards are also tend to have very fast wearing when utilized for cryptocurrency mining. It is surely a bad situation when the performance of your video card decreases on 20-30% only after 1-2 weeks of being exploited in such a way.

    How did I get Decrypt_bit.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 prevalent malicious programs among “major” viruses. Adware often functions as a carrier for Decrypt_bit.exe malware injection: it demonstrates you the banners, which have a link to malware downloading. Yes, this abstract “malware” can belong to any kind – an additional adware, spyware, rogue or backdoor. But the statistics show that around 30% of all viruses spread with the malicious banners are coin miners – and Decrypt_bit.exe is just among 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 computer is by downloading it from the unreliable site as a part of a program. Users who spread hacked variants of popular programs (which do not require the license key) have small chances to make money. For this reason, there is a very big temptation to add malware to the final package of the hacked app and acquire a coin for each installation. Before criticizing these individuals for hacking and also malware distribution, ask yourself – is it OK to avoid purchasing 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 Decrypt_bit.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 needs using special program. Proper security tool must have high efficiency at scanning and be lightweight – in order to make no problems with utilization also on weak computers. Additionally, it is recommended to have proactive protection in your security solution – to stop the virus even before it launches. Microsoft Defender does not have these elements for different factors. That’s why I’d recommend you to use a third-party anti-malware program for that reason. GridinSoft Anti-Malware is a superb option that fits each of the mentioned features.5

    Before the malware removal, it is important to boot your Windows into Safe Mode with Networking. Since Decrypt_bit.exe miner consumes 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 PC is in Safe Mode, all third-party software, along with the majority of non-crucial Windows components, are not started with the system start. That allows you to clean the computer without dealing with high processor usage of the coin miner.

    Remove Decrypt_bit.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 Decrypt_bit.exe Virus ⛏️ Trojan Coin Miner

    Name: Decrypt_bit.exe

    Description: The Decrypt_bit.exe is a Trojan Coin Miner that uses the infected computer’s sources to mine electronic money without your authorization. This Decrypt_bit.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 GridinSoft Threat Encyclopedia.
    5. Our review on GridinSoft Anti-Malware.

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    About the author

    Robert Bailey

    Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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