Anti malware bitcoin miner

Trojan.BitCoinMiner

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Cryptojacking definition

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Cryptojacking has become a serious global problem, with cybercriminals gaining unauthorized entry to computer systems to make money with minimal risk and effort. Cryptojacking is on the rise, with hackers coming up with new ways to steal computer resources and mine for cryptocurrencies. Cryptojacking first came to light in September of when Bitcoin was at its height. Code published by the organization Coinhive on their website, which shut down early in , was intended to be a mining tool for website owners to passively earn money — an alternative to displaying ads on their site for income.

Instead, cybercriminals realized they could exploit this code to embed their own cryptomining scripts. They were able to use the computing resources of visitors to the website to mine for the cryptocurrency Monero , which has since been involved in other cryptojacking investigations.

Cryptomining malware is becoming harder to detect. In a recent investigation into a cryptomining infection , a Varonis Security Research team discovered a new variant of malware that was likely being used in cryptojacking for Monero cryptocurrency. Research showed that the malware was creating network slowdowns and instability, both symptoms of cryptojacking that can be difficult to uncover.

Cryptojacking is becoming more popular among cyberhackers. The software used is easier to deploy and harder to detect than traditional hacking methods. Premade software programs are easy to obtain online and once a computer is infected, the cryptomining code runs behind the scenes and can remain undetected for a long period of time.

How to Tell if You Have a Bitcoin Miner Virus -

When detected, cryptojacking is very difficult to trace back to the hacker. By this time, cybercriminals have freely collected and spent their illegal cryptocurrency earnings, leaving businesses with negative consequences including slower running networks and the financial impact of their IT team having to troubleshoot computer crashes. There are three main methods that cryptojackers use to maliciously mine for cryptocurrencies: downloading malware to execute cryptomining scripts, hijacking IT infrastructure, and accessing cloud services.

With file-based cryptojacking, malware is downloaded and runs an executable file that spreads a cryptomining script throughout the IT infrastructure. One of the most common ways that cryptojacking occurs is by using malicious emails. An email is sent containing an attachment or link that looks legitimate. When a user clicks on the attachment or link, code is executed that downloads the cryptomining script onto the computer.

Cryptojacking attacks can take place directly within a web browser, using IT infrastructure to mine for cryptocurrency. Hackers create a cryptomining script using a programming language and then embed that script into numerous websites.

These malicious scripts can be embedded in ads and vulnerable and out of date WordPress plugins. Cryptojacking can also happen through a supply chain attack , where cryptomining code compromises JavaScript libraries. Once access is gained, hackers siphon unlimited CPU resources for cryptomining, resulting in a huge increase in account costs. Using this method, hackers can significantly accelerate their efforts of cryptojacking to illicitly mine for currency.

These three methods above allow hackers to steal cryptocurrency from unsuspecting victims by using their resources for their personal gain. Here are the mechanics and steps behind the cryptomining process:. Cyberhackers, also known as threat actors, compromise an asset by embedding cryptomining code using one of the three methods above. Once embedded, cryptojackers are counting on victims to execute the script. Users either click on an attachment or link to execute and run the cryptomining script or browse to a website with infected ads. After being executed, the cryptomining script runs in background, without the knowledge of the user.

Each time a hacker adds a new block to the chain they receive cryptocurrency coins. Without very little work or risk, these threat actors are able to gain reward in cryptocurrency that they can anonymously put directly into their digital wallets. Cryptojacking has the potential to affect your entire business operation. Detecting which of your systems have been compromised can be difficult. The code in cryptomining scripts can easily evade detection which means you and your IT team need to be extremely vigilant.

One of the top symptoms of cryptojacking is a decrease in performance in your computing devices.

This includes desktops, laptops, tablets, and mobile devices. Slower systems can be the first sign of cryptomining — educate your employees to report any decrease in processing to IT. The resource-intensive process of cryptojacking can cause computing devices to overheat. This can lead to computer damage or shorten their lifespan. Also related to overheating devices are fans that run longer than they should in an attempt to cool down the system. Have your IT team monitor and analyze the central processing unit CPU usage, or you can do it yourself for personal computers. This can be done using the Activity Monitor or Task Manager.

Cybercriminals are looking for websites where they can embed cryptomining code. Regularly monitor your own websites for changes to webpages or any files on the web server.

Malicious Cryptominers

This early detection can prevent your systems from being compromised by cryptojacking. Cybercriminals are always modifying code and coming up with new delivery methods to embed updated scripts onto your computer system. Being proactive and staying on top of the latest trends can help you detect cryptojacking on your network and devices.

Malware created for cryptomining uses up system resources much the same as cryptojacking scripts. Similar to CryptoLocker , malware can be used to infect computers, encrypt files, and hold them for Bitcoin ransom. Using your security software to scan for malware can help identify these malicious scripts. You can also use software such as PowerShell to detect a cryptojacking attack. Your IT team should be trained to understand and detect cryptojacking. They should be well aware of the first signs of an attack and take immediate steps to investigate further.

IT teams need to rely on employees to let them know when computers are running slowly or overheating. Employees also need to be educated in cybersecurity, such as not clicking on links in emails that execute cryptojacking code and only downloading from trusted links.

The same rule applies for personal email on your own devices.

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