This article aims to show you how to remove the PUA.JScoinminer malware entirely from your PC and how to protect your system against future infections.
PUA.JScoinminer malware is a JavaScript cryptocurrency miner that utilizes the power of some essential PC components to generate revenue for its creators. It can sneak into the system after a visit to a corrupted website that has embedded a malicious JavaScript code on it. PUA.JScoinminer can overload your CPU or GPU after infection. In case that you have noticed the threat on your PC, you are better to consider its complete removal before it causes irreversible damages.
Threat Summary
| Name | PUA.JScoinminer |
| Type | Cryptocurrency miner malware. |
| Short Description | After infection, the malware begin to use your processor and video card’s resources in order to mine for the cryptocurrencies BitCoin or Monero. |
| Symptoms | Overloaded CPU and GPU. The malware tries to stay unnoticed as long as possible. |
| Distribution Method | Via compromised websites or sites that embedded it. |
| Detection Tool |
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User Experience | Join Our Forum to Discuss PUA.JScoinminer. |
Delivery of PUA.JScoinminer Malware
The malicious PUA.JScoinminer is known to be spread via several methods. The infection is triggered by malicious JavaScript code designed to download the malware on your computer. Such JavaScript code can be injected into various websites. When you visit a web page that hosts the malicious JavaScript code your PC gets infected with the PUA.JScoinminer malware.
You may also receive the malicious mining script in a compromised e-mail attachment. Usually, the senders of such e-mails pose as representatives of a legitimate organization, so you are more prone to download the attachment and infect your system with the miner. The attached files may be defined as invoices, banking statements, purchase receipts, order confirmation files and other.
PUA.JScoinminer Malware Impact
After infection the PUA.JScoinminer malware will start to use a considerable amount of your CPU/GPU power to mine digital currencies like Monero, Bitcoin, Ethereum and other without your permission. As a result, your CPU will be overloaded for extended periods of time which can lead to significant decrease of its life or even permanent damage.
As the infection can only run in your web browsers, it may not drop any files on the computer. So how you can detect PUA.JScoinminer presence is by an elevated CPU or GPU usage and elevated temperatures.
Another trait that may help you to detect the mining malware process is your system cooling ventilator’s behavior. If it becomes more active than usual and a bit noisy you should immediately run a scan with an advanced anti-malware tool and check for any suspicious activities.
Even though the PUA.JScoinminer script is primarily designed for cryptocurrency mining it can also be set to collect different types of data from the infected machine. Thus the malware may obtain the logins of your online accounts, system information and network data that may be used to infect all devices connected to the same network.
Remove PUA.JScoinminer Malware from Your Computer
PUA.JScoinminer removal process may be a harder task than you expect. It is an extremely persistent threat designed to remain unnoticed on the system as long as it can. In case that you are not a computer expert, you can use the automatic removal steps and get rid of the nasty PUA.JScoinminer malware with a few mouse clicks. A scan with an advanced anti-malware tool will discover PUA.JScoinminer as well as all malicious files and objects associated with the virus. Furthermore, it will keep your system protected from future malware attacks.
Gergana Ivanova
Highly motivated writer with 5+ years of experience writing for ransomware, malware, adware, PUPs, and other cybersecurity-related issues. As a writer, I strive to create content that is based on thorough technical research. I find joy in the process of creating articles that are easy to understand, informative, and useful. Follow me on Twitter (@IRGergana) for the latest in the field of computer, mobile, and online security.
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Preparation before removing PUA.JScoinminer.
Before starting the actual removal process, we recommend that you do the following preparation steps.
- Make sure you have these instructions always open and in front of your eyes.
- Do a backup of all of your files, even if they could be damaged. You should back up your data with a cloud backup solution and insure your files against any type of loss, even from the most severe threats.
- Be patient as this could take a while.
- Scan for Malware
- Fix Registries
- Remove Virus Files
Step 1: Scan for PUA.JScoinminer with SpyHunter Anti-Malware Tool
Step 2: Clean any registries, created by PUA.JScoinminer on your computer.
The usually targeted registries of Windows machines are the following:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
You can access them by opening the Windows registry editor and deleting any values, created by PUA.JScoinminer there. This can happen by following the steps underneath:
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.Step 3: Find virus files created by PUA.JScoinminer on your PC.
1.For Windows 8, 8.1 and 10.
For Newer Windows Operating Systems
1: On your keyboard press + R and write explorer.exe in the Run text box and then click on the Ok button.
2: Click on your PC from the quick access bar. This is usually an icon with a monitor and its name is either “My Computer”, “My PC” or “This PC” or whatever you have named it.
3: Navigate to the search box in the top-right of your PC's screen and type “fileextension:” and after which type the file extension. If you are looking for malicious executables, an example may be "fileextension:exe". After doing that, leave a space and type the file name you believe the malware has created. Here is how it may appear if your file has been found:
N.B. We recommend to wait for the green loading bar in the navigation box to fill up in case the PC is looking for the file and hasn't found it yet.
2.For Windows XP, Vista, and 7.
For Older Windows Operating Systems
In older Windows OS's the conventional approach should be the effective one:
1: Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.
2: After the search window appears, choose More Advanced Options from the search assistant box. Another way is by clicking on All Files and Folders.
3: After that type the name of the file you are looking for and click on the Search button. This might take some time after which results will appear. If you have found the malicious file, you may copy or open its location by right-clicking on it.
Now you should be able to discover any file on Windows as long as it is on your hard drive and is not concealed via special software.
PUA.JScoinminer FAQ
What Does PUA.JScoinminer Trojan Do?
The PUA.JScoinminer Trojan is a malicious computer program designed to disrupt, damage, or gain unauthorized access to a computer system. It can be used to steal sensitive data, gain control over a system, or launch other malicious activities.
Can Trojans Steal Passwords?
Yes, Trojans, like PUA.JScoinminer, can steal passwords. These malicious programs are designed to gain access to a user's computer, spy on victims and steal sensitive information such as banking details and passwords.
Can PUA.JScoinminer Trojan Hide Itself?
Yes, it can. A Trojan can use various techniques to mask itself, including rootkits, encryption, and obfuscation, to hide from security scanners and evade detection.
Can a Trojan be Removed by Factory Reset?
Yes, a Trojan can be removed by factory resetting your device. This is because it will restore the device to its original state, eliminating any malicious software that may have been installed. Bear in mind that there are more sophisticated Trojans that leave backdoors and reinfect even after a factory reset.
Can PUA.JScoinminer Trojan Infect WiFi?
Yes, it is possible for a Trojan to infect WiFi networks. When a user connects to the infected network, the Trojan can spread to other connected devices and can access sensitive information on the network.
Can Trojans Be Deleted?
Yes, Trojans can be deleted. This is typically done by running a powerful anti-virus or anti-malware program that is designed to detect and remove malicious files. In some cases, manual deletion of the Trojan may also be necessary.
Can Trojans Steal Files?
Yes, Trojans can steal files if they are installed on a computer. This is done by allowing the malware author or user to gain access to the computer and then steal the files stored on it.
Which Anti-Malware Can Remove Trojans?
Anti-malware programs such as SpyHunter are capable of scanning for and removing Trojans from your computer. It is important to keep your anti-malware up to date and regularly scan your system for any malicious software.
Can Trojans Infect USB?
Yes, Trojans can infect USB devices. USB Trojans typically spread through malicious files downloaded from the internet or shared via email, allowing the hacker to gain access to a user's confidential data.
About the PUA.JScoinminer Research
The content we publish on SensorsTechForum.com, this PUA.JScoinminer how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific trojan problem.
How did we conduct the research on PUA.JScoinminer?
Please note that our research is based on an independent investigation. We are in contact with independent security researchers, thanks to which we receive daily updates on the latest malware definitions, including the various types of trojans (backdoor, downloader, infostealer, ransom, etc.)
Furthermore, the research behind the PUA.JScoinminer threat is backed with VirusTotal.
To better understand the threat posed by trojans, please refer to the following articles which provide knowledgeable details.