Downloader.Miner Trojan (svchost.exe)– What Is It + How to Remove

Downloader.Miner Trojan (svchost.exe)– What Is It + How to Remove

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This article has been created in order to explain what is the Downloader.Miner Trojan and how to remove this malware completely from your computer.

A new Trojan horse that is also a cryptocurrency miner has been detected by Symantec malware researchers recently. The malware aims to create a process, which aims to mine for anonymous cryptocurrencies, like Monero and BitCoin at the expense of your computer’s resources. As a result of this, not only does the Downloader.Miner Trojan overuse the components of your computer, but the program may also break some of the components in your PC as a result of running actively in it. If you have seen detections of Downloader.Miner Trojan on your PC and want to make sure this threat is fully gone from it, we advise that you read the following article.

Threat Summary

NameDownloader.Miner Trojan
TypeTrojan Horse/CryptoCurrency Miner
Short DescriptionSilently infects your computer after which begins to mine for cryptocurrencies via a fake executable process..
SymptomsA fake version of svchost.exe running actively in your Task Manager.
Distribution MethodMalicious web links, Malicious Files, Malicious E-Mails
Detection Tool See If Your System Has Been Affected by Downloader.Miner Trojan


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss Downloader.Miner Trojan.

Downloader.Miner – How Does It Infect

The primary methods of infection which can be conducted in association with Downloader.Miner may involve both malicious web links and malicious files. Such can both be included in spammed e-mail messages, whose primary purpose is to fool inexperienced users into opening them. An example of such cunningly designed spam e-mail can be seen below:

Besides e-mail attachments, the spammed e-mails that may carry around the infection file of the Downloader.Miner Trojan may also exist in the form of a malicious link to which the user is redirected via one or more redirects after clicking on it. Such links can exist on suspicious websites and can even be sent to you via e-mail, like the fake PayPal e-mail underneath:

In addition to this, the Downloader.Miner Trojan may also be uploaded on suspicious software providing websites, pretending to be:

  • Keygen.
  • Game patch or crack.
  • Software license activator.
  • Fake setup of a driver or other type of program.

Downloader.Miner – More Information and Analysis

Downloader.Miner is another one of those silent online threats that may exist in different forms and whose primary purpose is to mine silently for cryptocurrencies and generate profits to cyber-criminals at the user’s expence. This procedure may result in multiple negative consequences on your computer, including that your CPU and GPU (video card and processor) may break down completely.

Once the Downloader.Miner has been executed on your computer, the program creates the following files on your Windows directory:

  • %Microsoft%\svchost.exe
  • %Microsoft%\svchost.exe.exe

In addition to this, the program may also created the following Windows Registry sub-keys and add registry value strings with data on them:

→ HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SvcHost Service Host
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Run\25 70 7D 5A 00 00 00 00

The Trojan horse may also use it’s Trojanized svchost.exe process in order to connect to a randomly named domain and download the following .wsf file on the infected computer system:

→ m.wsf

The Downloader.Miner also deletes the following file in the %Temp% folder:

→ %Temp%\F.tmp.exe

In addition to this, the Downloader.Miner also runs a crypto miner program which may have started out as a legitimate mining app, connecting you to a pool, but it’s code may have been altered so that it serves it’s malicious purposes. The mining procedure may be performed by the fake svchost.exe process which may be using over 90% of your CPU and may also overuse your GPU in order to mine for cryptocurrencies. These types of cryptocurrencies are anonymous ones, like Monero and Bitcoin, which are primarily used for malicious purposes nowadays. The side effects of this mining operations are the cyber-criminals behind this virus to become rich with the increasing number of PC’s they infect while your computer begins to stutter, freeze and it may even break down due to the components` overusage.

Remove Downloader.Miner Effectively from Windows

In order to fully get rid of this cryptocurrency miner Trojan, we advise you to follow the removal instructions underneath this article. They are made so that they help you to isolate and then delete the Downloader.Miner Trojan either manually or automatically. If manual removal represents difficulty for you, experts always advise to perform the removal automatically by running an anti-malware scan via specific software on your PC. Such anti-malware program aims to make sure that the Downloader.Miner is fully gone and your Windows OS stays safe against any future malware infections.


Ventsislav Krastev

Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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