Deftesrg.exe Monero CPU Miner - How to Detect + Remove It

Deftesrg.exe Monero CPU Miner – How to Detect + Remove It

This article has been created in order to assist in identifying and removing the deftesrg.exe Monero miner malware from your computer to prevent it from mining the cryptocurrency Monero on it.

A new miner malware which uses the process deftesrg.exe has been detected to connect victim computers to a Monero mining pool and begins to utilize their CPU and GPU power in order to mine for the crypto. This results in the infect computer to significantly slow down, freeze and even break down due to overheating if the malware remains for longer periods of time on it. So if you see any signs of presence of the deftesrg.exe Monero miner malware we strongly suggest that you read the following article and learn how to remove this miner from your PC in a safe manner.

Threat Summary

NameDeftesrg.exe Monero Miner
TypeMiner Trojan Horse
Short DescriptionAims to use the system’s resources of the infected computers to mine for Monero and other crypto currencies.
SymptomsAfter infection the miner overloads the CPU for extended periods of time which results in poor PC performance and system crashes.
Distribution MethodNetworks attacks, exploits, emails, scam sites and malware downloads.
Detection Tool See If Your System Has Been Affected by Deftesrg.exe Monero Miner


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Deftesrg.exe Miner Malware — Spread

The deftesrg.exe miner malware may be replicated via more than one ways. It is not clear which strategy is most preferred by the cyber-criminals, but it is most likely that spam e-mails that contain deceitful messages and malicious attachments that are the cause of infection. Such e-mails often portray the malicious files of deftesrg.exe miner malware as legitimate documents of various types:

  • Invoice.
  • Receipt.
  • Order confirmation.
  • Product return.

In addition to this, the deftesrg.exe miner malware is also the type of malware that may come as a malicious web link posted in fake e-mails, that are very clever copies of legitimate companies from the likes of Dropbox, LinkedIn, Facebook, etc. just to get you to click on it. Such e-mails look very similar to what an original e-mail from those companies would look like, for example:

Furthermore, besides via e-mail, the malicious files may also pretend to be legitimate types of files from the likes of:

  • Fake software setups.
  • Fraudulent key generators or software activators.
  • Fake game or program patches and cracks.

Deftesrg.exe Malware — Malicious Activity

Once your computer has already been infected by the deftesrg.exe miner malware, it’s malicious files may be dropped on your computer system. They may be copied in the following Windows directories:


The main malicious file of the virus, named deftesrg.exe is the miner executable and it’s primary purpose is to silently connect your computer to the following miner pool for the Monero cryptocurrency:


After this has been done, the malware may also create a task that runs the deftesrg.exe process and it begins to overload your CPU and GPU by conducting the hashing operations in the mining pool. But instead of rewarding you for the operation, the credits are transferred to the cyber-criminal’s cryptocurrency wallet. The only negative outcome is for your computer’s components, which can result in your PC becoming unstable in terms of performance and it may even break down if the virus remains for a long time active and overusing the CPU and GPU.

In addition to mining for cryoptocurrencies, the deftesrg.exe miner malware may begin to perform other activities on your computer, among which may be the following:

  • Log your keystrokes.
  • Steal files.
  • Take screenshots.
  • Steal passwords and login ID’s.
  • Obtain different private information from your web browser.
  • Update itself.
  • Download other malware.

How to Remove Deftesrg.exe Miner Virus from Your Computer

In order to fully be rid of this miner malware, it is advisable to firstly isolate it by making it inactive. Then, you can try following either the manual or the automatic removal instructions down below, created to help you cope with the virus based on your malware removal experience. However, it is strongly advisable by researchers to remove this malware by downloading and installing an advanced anti-malware software, whose primary purpose is to automatically detect all objects created by the deftesrg.exe miner malware (if present) and remove those objects plus detect other malware in the process to secure your PC fully.


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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