If this relates to (e.g., EUC-CN, EUC-JP, EUC-KR) and "fgbin" is a binary format for foreground/background:

Sometimes malware or potentially unwanted applications (PUAs) can target or drop files in the same directory as system configuration files. Running a scan with tools from providers like Trend Micro can ensure your system is clean. Update Windows:

Some security suites might flag binary files in program folders. If this happens, you can usually add it to your antivirus "allow" list if you trust the software source.