Forum,
I uploaded both files to VirusTotal, here are the URLs:
for setupapi.ev1:

http://www.virustotal.com/file-scan/report.html?id=d53e419b40ac5c7f81b88cccf0fffef37fdd67235b0f815fd4396a15df7dd07e-1308440758

for AgAppLaunch.db:

https://www.virustotal.com/file-scan/report.html?id=83e205df25293c3f271a8984af33eebde3be5392a155d790ad74037424a9022a-1308440567

My operating system is Windows 7 SP1, both files were first detected during my scheduled full scan, about two hours after boot. Avast gives the file names as:

C:\Windows\inf\setupapi.ev1 and
C:\Windows\Prefetch\AgAppLaunch.db

Sincerely,
Carthage