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.
Process: IRCBOTKeywords(s): trojan
User opinions
Could be calculator application