Found the files at:

C:\Users\Public\Documents\Windows

90s.rtf

err.html

IntuitDownloadManager.exe

msg.ini

Newtonsoft.Json.dll

QuickBooksDownloader.exe

Sv.ini

Win32_API.dll

Can't quite figure out how it got installed yet.

Using task manger with the "Command" column you can see the folder it is running out of.

It is the IntuitDownloadManager.exe that is running displaying the message.