Additional Details
NetTool.Win32.Calc-Dnet.g detects the Distributed.net client executable version 2.9001.477 for Windows 32-bit systems.
This client is used to implement a "distributed computing" network, where it uses the host system's idle CPU time to process parts of a given project. Typically, these are complex mathematical challenges, e.g. signal processing or decryption.
This software has been known to be modified/dropped by malware, unauthorized installation of this program on a system should be investigated.