Butler Miner Trojan is a Trojan infection designed to infiltrate computers stealthily and then mine cryptocurrency using affected computer’s resources. Unlike similar malicious applications (they are quite prevalent these days), it injects the XMRig Miner script into the explorer.exe process. In other words, it is not a cryptocurrency miner itself. Instead, it uses another tool to mine cryptocurrency on victims’ computers. Of course, there is a slight possibility that they both belong to the same author. As has been observed, Butler Miner Trojan might pretend to be beneficial software, or it might be distributed as a harmless email attachment, so it is not surprising at all that users know nothing about its entrance on their computers. The Trojan infection stays in the background and silently mines cryptocurrency, so it takes time for users to detect it. We will talk about the symptoms showing that there is the cryptocurrency miner installed on the system in detail further in this report, but, in general, the majority of users find out that there is malware active on their computers because they notice that their computers’ speed has dramatically decreased.
As you already know, Butler Miner Trojan is a cryptocurrency miner, so it would be very naïve to expect it to act in a different way on your system. Once this infection infiltrates computers and injects the script into explorer.exe, it starts mining digital currency using affected computers’ CPU and GPU power. It uses almost all available system resources, so users sooner or later notice that their computers are not as fast as they used to be. Many users also complain that their computers started freezing. Additionally, some programs they want to use crash. These are not the only problems Trojan infections might cause. For example, if you do nothing and let the Trojan infection stay, it will not only slow down your PC considerably, but it is only a question of time when new malicious applications will be installed on your computer. Of course, you will not be informed about this in advance and thus could not do anything to stop this. As you can see, it is a very bad idea to keep Butler Miner Trojan active on the system.
According to researchers, Butler Miner Trojan is mainly distributed masqueraded as a virtual disk creation program, a key generator, a driver installer, or another useful program. That is, users click the Download button to get a beneficial program, but download the Trojan infection instead. If you have not encountered this threat yet, you still have a chance to prevent it from entering your computer. First, you should stop downloading programs from suspicious websites and torrents. Also, you should not click on any suspicious links and/or advertisements if you do not want to end up with any harmful threats. Last but not least, to stay safe, you must have a security application enabled on your computer.
If your computer’s speed has decreased, there is a possibility that it is already too late for prevention, i.e. Butler Miner Trojan has already infiltrated your computer. Even though this infection tries to stay unnoticed and works in the background, it does not mean that users cannot find out about its entrance themselves. There are several symptoms showing that malware is active on your system. First, malicious applications usually launch the malicious process – you can find it listed under the Processes tab in Task Manager. Also, you should be able to find new entries in the Run registry key (HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run or HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run). Finally, you should find news files on your PC. According to specialists, Butler Miner Trojan should drop files in %TEMP%. If you are 100% sure this is the threat you have encountered, you must take action to disable it right away.
You can delete Butler Miner Trojan either manually or automatically. If you decide to remove it yourself manually, you will have to kill the malicious process, remove malicious items from the system registry, and, finally, remove all malicious components that belong to Butler Miner Trojan. Feel free to use our instructions, but if you want to clean your system quicker, you should perform an in-depth system scan with an antimalware scanner instead.
Kill malicious processes
Remove malicious registry entries
Delete malicious files