This article has been created in order to help you by demonstrating how to remove the JS:Cryptonight miner for the cryptocurrency Monero and how to protect your MacBook against future miners as well.
|Type||Cryptocurrency mining malware.|
|Symptoms||May overheat your CPU and GPU by using them to mine for the cryptocurrency Monero.|
|Distribution Method||Via malicous web links, e-mails and other third-party content.|
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|User Experience||Join Our Forum to Discuss JS:Cryptonight.|
JS:Cryptonight Malware – Spread
In order to infect the maximum amount of victims, the virus files of this malware may be spread in a multitude of methods. These include spreading the malicious files by sending malicious spam e-mails as well as other content to you online. These e-mails often contain false statements to get you to click on a web link or download a malicious attachmnent, for example:
JS:Cryptonight – More Information
Once this malware is activated on your computer, it may drop it’s malicious processes and they may have different names on your computer. The file are usually located in various commonly targeted directories or ran filelessly.
After the malicious files, belonging to JS:Cryptonight are ran, the virus may obtain administrative permissions, touch system files as well as create mutexes. Then, the JS:Cryptonight runs a malicious process in the background of your computer, which may result in your CPU usage spiking severely.
Image Source: MakeUseOf.com
In addition to this, since it is malware after all, the JS:Cryptonight may also perform other activities on your computer system, such as:
- Update itself.
- Download other malware.
- Collect important information from your computer system.
Be advised that the miner primarily targets the GPU of your MacBook since it uses the Cryptonight algorithm which is a proof of work and utilized to mine exclusively for Monero. The way the mining process occurs is by getting the MacBook to be enlisted in a so-called mining pool. This makes it possible to turn the infected device into a miner and generate crypto money for the cyber-criminals at your PC’s expense. Since the process is particularly dangerous and can even damage your computer in the long-term, security experts strongly advise to remove it from your computer.
Remove JS:Cryptonight from Your Computer
In order to remove the JS:Cryptonight from your computer, we recommend that you do this automatically, since manual removal requires an extensive experience in this field. To do this, you can use Kaspersky’s latest security software against miner malware, like JS:Cryptonight, which besides removing the virus at a click of a button will also make sure that your Mac stays protected against future infections as well.
Steps to Prepare Before Removal:
Before starting to follow the steps below, be advised that you should first do the following preparations:
- Backup your files in case the worst happens.
- Make sure to have a device with these instructions on standy.
- Arm yourself with patience.
What is JS:Cryptonight on your Mac?
The JS:Cryptonight threat is probably a potentially unwanted app. There is also a chance it could be related to Mac malware.
The creators of such unwanted apps work with pay-per-click schemes to get your Mac to visit risky or different types of websites that may generate them funds. This is why they do not even care what types of websites show up on the ads. This makes their unwanted software indirectly risky for your MacOS.
Can Macs Get Viruses?
Yes. As much as any other device, Apple computers do get malware. Apple devices may not be a frequent target by malware authors, but rest assured that the following Apple devices can become infected with a threat:
- Mac Mini
- Macbook Air
- Macbook Pro
What Are The Symptoms of JS:Cryptonight On Mac?
There are several symptoms to look for when this particular threat and also most Mac threats in general are active:
Symptom #1: Your Mac may become slow and has poor performance in general.
Symtpom #2: You have toolbars, add-ons or extensions on your web browsers that you don't remember adding.
Symptom #3: You see all types of ads, like ad-supported search results, pop-ups and redirects to randomly appear.
Symptom #4: You see installed apps on your Mac running automatically and you do not remember installing them.
Symptom #5: You see suspicious processes running in your Mac's Activity Monitor.
If you see one or more of those symptoms, then security experts reccomend that you check your Mac for viruses.
What Types of Mac Threats Are There?
According to most malware researchers and cyber-security experts, the threats that can currently infect your Mac can be the following types:
- Rogue Antivirus programs.
- Adware and hijackers.
- Trojan horses and other spyware.
- Ransomware and screen-lockers.
- Cryptocurrency miner malware.
What To Do If I Have a Mac Virus, Like JS:Cryptonight?
Do not panic! You can easily get rid of most Mac threats by firstly isolating them and then removing them. One recommended way to do that is by using a reputable malware removal software that can take care of the removal automatically for you.
There are many Mac anti-malware apps out there that you can choose from. SpyHunter for Mac is one of the reccomended Mac anti-malware apps, that can scan for free and detect any viruses. This saves time for manual removal that you would otherwise have to do.
How to Secure My Data from JS:Cryptonight?
With few simple actions. First and foremost, it is imperative that you follow these steps:
Step 1: Find a safe computer and connect it to another network, not the one that your Mac was infected in.
Step 2: Change all of your passwords, starting from your e-mail passwords.
Step 3: Enable two-factor authentication for protection of your important accounts.
Step 4: Call your bank to change your credit card details (secret code, etc.) if you have saved your credit card for online shopping or have done online activiites with your card.
Step 5: Make sure to call your ISP (Internet provider or carrier) and ask them to change your IP address.
Step 6: Change your Wi-Fi password.
Step 7: (Optional): Make sure to scan all of the devices connected to your network for viruses and repeat these steps for them if they are affected.
Step 8: Install anti-malware software with real-time protection on every device you have.
Step 9: Try not to download software from sites you know nothing about and stay away from low-reputation websites in general.
If you follow these reccomendations, your network and Apple devices will become significantly more safe against any threats or information invasive software and be virus free and protected in the future too.
More tips you can find on our MacOS Virus section, where you can also ask any questions and comment about your Mac problems.
About the JS:Cryptonight Research
The content we publish on SensorsTechForum.com, this JS:Cryptonight how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific macOS issue.
How did we conduct the research on JS:Cryptonight?
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 Mac threats, especially adware and potentially unwanted apps (PUAs).
Furthermore, the research behind the JS:Cryptonight threat is backed with VirusTotal.
To better understand the threat posed by Mac malware, please refer to the following articles which provide knowledgeable details.