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CoinImp virus. How to remove? (Uninstall guide)

removal by Ugnius Kiguolis - - | Type: Malware

CoinImp is a JavaScript miner, which uses the CPU power of website visitors’ PCs to mine Monero coins

CoinImp virus uses JavaScript code to mine Monero

CoinImp is one of the newest digital currency mining[1] services developed and maintained by ABC Hosting LTD. Although it is primarily oriented to experienced webmasters who own websites with the large influx of visitors, all volunteers can try it out. The service allows Internet users to mine XMR or Monero[2] coins by embedding a JavaScript miner into the preferable website. The script then uses visitors’ CPU power to earn Monero coin fractions.

Name CoinImp
Type Malware
Sub-type Cryptocurrency miner
Cryptocurrency mined Monero
Symptoms High CPU usage, system's sluggishness, unresponsiveness, freezes, crashes, web browser's redirects to fake websites
Distribution Hacked websites, bundling, PUPs
Similar malware Coinhive Miner, RubyMiner, Minergate virus, Monero Miner, etc. 
Removal To immunize CoinImp Miner from the system specialists recommend using professional anti-malware tools. Reimage is a reliable tool for this task.

If used properly, CoinImp miner is not malicious in any sense. Contrary, digital currency specialists point out that this service is noteworthy due to the lowest fee (1%) in the market, the usage of Referral Program, the simplicity of API key, 24/7 customer service, and other features.

Nevertheless, many people refer to this website miner as CoinImp virus. According to its developer, at the moment of writing, the original version of this JavaScript miner is not included into the database of AV engines and is not recognized by adblock utilities since its inoffensive. However, hackers might try to misuse CoinImp Monero miner illegally by injecting it into legal websites without getting permission for that.

Stealthy installation of JavaScript miner[3] severely violates both website visitor’s and webmaster’s rights. Although usage of CoinImp on the site provides ad-free web browsing experience, websites hijacked for cryptocurrency mining utilize the resources (CPU) of the visitor’s PC. Consequently, more extended hours spend on the site embedded with the rogue crypto miner with CoinImp features can result in severe system’s slowdowns, crashes, freezes, unresponsiveness, and similar abnormal behavior.

CoinImp Miner is allowed users to customize the usage of visitor’s CPU resources. Conscientious users of the server do not tend to disable the limited resource usage. In the meantime, hackers opt for disabling all limits to utilize 100% of CPU. High resource consumption, especially on older devices with older fans, can lead to severe system’s crash, data loss, and hardware problems.

To maximize the earnings, hackers are also known for creating fake websites and embed CoinImp JavaScript code on them. Additionally, such sites can be supplemented with malicious scripts which lock the website and do not allow the visitor to leave it. The only way to exit a crypto-hijacked webpage is to quit-force the web browser.

Although the website embedded with the CoinImp virus should stop sucking up CPU, the standard practice shows that it might continue its job by displaying a hidden pop-up under the window on Windows startup.

If you are satisfied with the service and does not spot its associations with untrustworthy parties and malware, you are free to use it as much as you want. However, to prevent hackers from stealing your CPU resources and gaining illegal profit by rendering your PC useless after visiting particular websites for a longer time, NoVirus.uk[4] experts recommend you to remove CoinImp Miner from the system.

Although developers claim that the Monero miner evades anti-virus and adblock detection, try to remove CoinImp website miner with Reimage or another reputable security tool. If not added yet, it’s only a matter of time when it will be included in the most popular antivirus databases.

Digital currency miners use stealthy ways to infect PCs

This particular Monero miner is offered as a legitimate free service on the official website. Those who opt for using it has to register to the service and generate unique links via the app. However, if hackers misuse it for illegal Monero mining, the JavaScrip code can be injected stealthily via hacked websites, potentially unwanted programs (PUPs) or even as an independent app.

As we have already pointed out, crooks can hack legitimate websites or create rogue domains, which are embedded with JavaScript cryptocurrency miner by default. People can get redirected to such domains by clicking on related ads or links.
Tech-Support-Scam sites that pop-up in the form of a new tab and completely locks the screen are the best example to illustrate the illegal usage of cryptocurrency mining scripts. Such domains might warn the visitor about the virus, spyware, rogueware and another infection and urge him/her to contact certified technicians.

Potentially unwanted programs, like adware and browser hijacker, are yet another medium allowing crooks to drive visitors traffic to miner embedded web domains. These apps can hide in the system for a long time displaying dangerous ads and links among user’s search results. Usually, PC users start suspecting an unwanted program to be installed when the web browser starts generating such a high number of ads that it becomes difficult to browse.

More often than not, malicious cryptocurrency miners are spread in the form of independent apps. Although you can hardly find them as stand-alone installers, apps like CPU Miner or Coinhive can be found bundled with freeware and shareware.

Learn how to get rid of CoinImp Miner virus

Cryptocurrency miners do not manifest their presence. They do not the corrupt system in a remarkable way. However, if you are a heavy PC user, the symptoms of PC’s sluggishness and unresponsiveness should draw your attention. Besides, you should also notice an excessive number of ads within web browsers, which redirect to unusual, rogue or malicious domains all the time.

To check what is happening with the system, you should open Task Manager and verify what processes are currently running and how much CPU do they take. If CPU consumption exceeds 50%, we would recommend scanning the system with Reimage, Malwarebytes MalwarebytesCombo Cleaner, Plumbytes Anti-MalwareMalwarebytes Malwarebytes or another antimalware for crypto miners or other malware.

If all prove points to the JavaScript miner, do not delay CoinImp removal as it may eventually render your PC useless.

[GI=method-1]If you cannot perform CoinImp removal because it blocks your antivirus, try to launch the tool when the system is booted with Safe Mode with Networking:[/GI]

[GI=method-2]If the previous method did not help to remove CoinImp virus, try the following steps:[/GI]

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Compatible with Microsoft Windows Supported versions Compatible with OS X Supported versions
What to do if failed?
If you failed to remove virus damage using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to remove virus damage. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Malwarebytes.
Alternative Software
Different security software includes different virus database. If you didn’t succeed in finding malware with Reimage, try running alternative scan with Combo Cleaner.

About the author

Ugnius Kiguolis
Ugnius Kiguolis - The mastermind

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References