The calc.exe is a IRCBOT.
It’s not absolutely clear which product this file is part of and who is its author. Sometimes files like this can be dangerous. Make sure calc.exe is a safe file by scanning your computer for viruses.
The calc.exe process is safe, and you can safely disable it. Some other processes use the same file name.
We also recommend optimizing your computer.
Process: IRCBOTKeywords(s): trojan