What is this? I have several files with names ending with this: _NEMTY_LVMHFKO_-DECRYPT. Some are .xlsx files, some are .docx files. Each has the _NEMTY_LVMHFKO_-DECRYPT following the file name. We can't find the original Excel or Word files, only these files with _NEMTY_LVMHFKO_-DECRYPT tagged onto the end. The file won't open with any program, but if we navigate to it in Excel and open it, Excel will convert it from a text doc to a jumbled up excel doc.