JSMiner-C (virus) - 2021 update

What is JSMiner-C?

JS:Miner-c is a dangerous cryptocurrency miner lurking in the cyberspace

The trojan horse as seen detected by antivirus software

JS:Miner-c is a term that is used by antivirus programs to identify a dangerous Trojan horse virus. This cyber threat possesses a wide range of capabilities, including secretly mining cryptocurrency (Monero, Bitcoin, etc.) on targeted machines, track and record personal and technical information, or even serve as a backdoor to various other malware. Experts categorize this infection as similar to Minergate virus as both of them can not only damage computer systems but infiltrate with other cyber threats as well. Thus, it vital to get rid of the infection promptly.

If you wonder what is JS:Miner-c, this is merely a name for the infection used by antivirus systems to warn users. At the moment, you can receive an alert with such a name from Avast. The term refers to the crypto-mining malware designed to redirect users to infected websites which are misusing the legitimate script from Coinhive — Monero JavaScript miner. According to Coinhive's Terms of Use, authors of the site MUST warn users about mining. However, it is more than obvious that hackers behind the trojan virus are not going to do that.

Have in mind that JS:Miner-c will never lead you to trustworthy sites. In fact, they cannot only use your computer's power to mine cryptocurrency but can also infect your system with the following potentially unwanted programs (PUPs) and other dangerous malware:^[1]

• Browser hijackers;
• Adware-type applications;
• Ransomware;
• Trojan horses.

Note that once you enter a bogus website, it will use excessive amounts of CPU power while the page is open. The temporary way to stop the site from misusing your computer's resources is to close it immediately. However, this will not remove JS:Miner-c from your system which is the primary cause why you are redirected to such websites.

The miner is programmed to mine Monero cryptocurrency.

If you ignore JS:Miner-c Avast detection, there are numerous computer-related issues you may face. High CPU usage forces your computer to work at high temperatures for long periods of time. Likewise, after some time you will first notice a significant decrease in your PC performance, along with increased electricity bills.

Also, be aware that mining cryptocurrency usually takes up to 100% of CPU^[2] and there are no resources left for performing other vital system processes. As a result, your programs will crash or it will take a lot of time for them to load. Moreover, you might face other issues related to the virus as well:

• Continuous freezes;
• Slowdowns;
• Sluggish system.

For all the reasons mentioned above, we strongly suggest you remove JS:Miner-c from both, Mac and Windows operating systems. You can employ professional security software, like SpyHunter 5Combo Cleaner or Malwarebytes.

JSMiner-C is designed to redirect users to the websites which stealthily mine Monero cryptocurrency in the background.

Additionally, we would like to warn you that successful threat removal requires you to get rid of all its malicious components. Since this malware has adware-like features, it is vital to delete all suspicious entries from your browsers. Instructions on how to do that are also provided at the end of this article.

Beware of suspicious emails and dubious sites

One of the most prominent malware distribution methods is malicious attachments or links inside a phishing email. Bad actors often employ bots that are capable of sending thousands of emails to innocent users. Therefore, it is vital to recognize a scam email by the following signs:

• grammar or/and spelling mistakes present;
• the author presents himself as a representative of a high profile organization;
• the “From” address is not genuine (even if it might look so at first glance);
• attachments (such as .zip, .rar, .pdf, .doc, .html) or cleverly hidden hyperlinks present.

Thus, carefully check the message before proceeding with any actions. Another way to prevent malware would be scanning the attachment before opening it.

Furthermore, Monero miner can also be distributed via malware-laden ads which look incredibly genuine. Likewise, you must not only monitor the software installation procedure but also pay close attention when browsing the Internet.

We suggest you stay away from all types of ads you can encounter online. Note that developers aim to make them look genuine and trick credulous people into clicking on them (for example, the malicious pop-up might be disguised as fake update). Unfortunately, most of the time you might either fall into the trap of scammers who are offering fake and expensive products or manually infiltrate malware.

You can uninstall JS:Miner-c with an antivirus software

If you consider whether the removal is necessary, we can assure you that this is the only way to protect your computer's well-being. Note that this malware not only deteriorates it performance but it can also infiltrate the system with other potentially dangerous infections. Thus, get rid of it as soon as possible.

For that, we strongly recommend employing one of the antivirus tools mentioned below. They are designed to help you eliminate various potentially unwanted programs with a few clicks. Thus, this is the easiest way to get rid of JS:Miner-c virus. However, feel free to use any other malware removal tool of your choice.

LosVirus.es^[3] team warns that users should remove the virus manually, at will most likely fail and can damage the compromised system even more. Rely on SpyHunter 5Combo Cleaner, Malwarebytes for the job. Also, trust FortectIntego fr the help of cleaning the system.