Osdmnuu.exe Virus ⛏️ (Coin Miner Trojan) Removal

Written by Robert Bailey
Osdmnuu.exe process belongs to a malicious application that can correctly be recognized as a coin miner trojan virus. That malware form utilizes your PC components to mine cryptocurrencies, primarily – Monero or DarkCoin1. It makes your system pretty much unusable as a result of high CPU use.
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What is Osdmnuu.exe process?

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

As I have actually mentioned earlier, Osdmnuu.exe is a coin miner trojan virus. The names of the .exe file may be different, however, the impacts are usually the identical. Because coin miners focus on cryptocurrency mining, they use all possible hardware capacity of your personal computer to run this operation. This virus doesn’t take note of the fact that you may want to use your desktop for other tasks – it will always consume over 80% of your processor power.

Osdmnuu.exe Windows Process

Osdmnuu.exe – Very high CPU/GPU use

Besides CPU utilization, some of the coin miners additionally use GPU power for their operations. In that instance, you will probably struggle even to see the mouse cursor moving – GPU is usually used on 100%. It is not as critical as CPU for system work, so Osdmnuu.exe coin miner viruses don’t waste time on trifles and use all of it. It sometimes can cause bad effects.

Shortly about cryptocurrency mining

Cryptocurrency mining is a term that means the action of calculating the transaction block hash. That is a integral part of any project based on the blockchain technology. Since this action takes a lot of calculations, a very powerful PC is needed. Exactly, the video card is better for this task, because they have more cores available. Cryptomining farms are usually constructed of dozens of GPUs to complete their task efficiently. Such systems are not usable for “general” purposes, like gaming or web browsing. Fraudsters who gain money 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 Osdmnuu.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, Osdmnuu.exe malware makes your PC overloaded. It is not able to run your applications now, because all CPU power is used by a malware. That malware does not care for your needs, 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 incredibly sluggish performance. Pages can open for years, any sort of logins will take about a minute – just a horror story for a person that works online.

    Osdmnuu.exe Technical Summary.

    File Name Osdmnuu.exe
    Type Trojan Coin Miner
    Detection Name Trojan:Win32/CoinMiner
    Distribution Method Software bundling, Intrusive advertisement, redirects to shady sites etc.
    Similar behavior Wndows.driver, Multiminer.win, Ahiwq.exe
    Removal Download and install GridinSoft Anti-Malware for automatic Osdmnuu.exe removal.

    “Visible” damage is not a single negative thing coin miners perform to your computer. Osdmnuu.exe coin miner also deals damage to your OS. To conduct all malicious operations successfully, it wrecks the protection components of your system. You will likely see your Microsoft Defender disabled – malware halts it to prevent detection. If you check the HOSTS file, you will likely see a ton of new entries – they are added by this coin miner to connect your system to a malicious cryptomining 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 making your PC slow, performing at peak level for long times can cause damage to your device and raise electricity expenses. Hardware elements are designed to easily deal with high load, but they can do so only in case when they are in a good shape.

    Small and covered processor fan is hard to broke. Meanwhile, GPUs have large and easy-to-access fans, which can be easily cracked if affected while spinning, for example, by the user much earlier before the malware injection. Malfunctioning cooling system, together with the really high load caused by Osdmnuu.exe virus can easily lead to graphic processing unit failure3. Graphic cards are also prone to have increased wearing when utilized for cryptocurrency mining. It is likely a bad situation when your GPU’s performance plunges 20-30% just after several weeks of being used in such a way.

    How did I get Osdmnuu.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 widespread malicious programs through “severe” malware. Adware often functions as a carrier for Osdmnuu.exe malware injection: it shows you the banners, which have a link to malware downloading. Yes, this abstract “malware” can belong to any type – an additional adware, spyware, rogue or backdoor. However, the statistics say that about 30% of all viruses spread with the malicious banners are coin miners – and Osdmnuu.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 website as a part of a program. People who spread hacked variants of well-known programs (which do not need the license key) have small chances to earn money. Thus, there is a very big lure to include malware to the final package of the hacked app and get a coin for every setup. Before blaming these guys for hacking and malware spreading, ask yourself – is it okay to avoid purchasing the program in this manner? It is more affordable to pay $20-$30 at once than to pay a much greater sum for antivirus program as well as new parts for your PC.

    How to remove the Osdmnuu.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 demands the use of specific tool. Appropriate anti-malware program must have high performance at scanning and be lightweight – in order to create no problems with usage even on weak PCs. Furthermore, it is recommended to have proactive protection in your protection tool – to stop the virus even before it starts. Microsoft Defender does not have these elements for various factors. That’s why I’d recommend you to use a third-party anti-malware program for that objective. GridinSoft Anti-Malware is a superb option that fits each of the discussed qualities.5

    Prior to the virus removal, it is important to boot your operating system into Safe Mode with Networking. Since Osdmnuu.exe miner consumes a lot of CPU power, it is needed 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 programs, just like the majority of non-critical Windows components, are not started with the system start. That allows you to clean the PC without dealing with high CPU usage of the coin miner.

    Remove Osdmnuu.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 Osdmnuu.exe Virus ⛏️ Trojan Coin Miner

    Name: Osdmnuu.exe

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