rigxxxx.tmp files in AppData\Local\Temp folder

Hello:<o:p></o:p>

I have noticed a lot of rigxxxx.tmp files in my AppData\Local\Temp folder.  These files track all files that are added or deleted. By using ProcMon, I see that they are generated by explorer.exe (Windows explorer).<o:p></o:p>

The xxxx digits can be alpha or numeric and the 4 digits seem to be randomly created.<o:p></o:p>

<o:p> </o:p>

Only 2 things I want to know are: <o:p></o:p>

Has anybody else ever seen these files with the rigxxxx.tmp naming convention before?<o:p></o:p>

Is this a normal type of output file for that program - or are these files generated by malware? <o:p></o:p>

Thanks.<o:p></o:p>