msvcr100_clr0400.dll is the runtime components of Visual C++ Libraries required to run applications developed with Visual C++ and is recompiled by Korea Network Technology Co., Ltd. While the file properties state the file is developed by 'Microsoft Corporation', this is not the case and it is designed just to look like a legitimate Microsoft system file. The module msvcr100.dll, “Microsoft® C Runtime Library” by Korea Network Technology Co. has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. Note, this is a common distributed file and although it has been detected it might not be a threat is un-coupled from its distribution source.