Would think it's because it's "spying" on the other programs to get their windownames..
Think it's called Spy++ or something like that..
No worries, it's not a virus.. AV's just think it's similar to one..
Edit: Found a link for Spy++ on MSDN.. Click here
Edit2: Though, it could still be a virus.. You never know do you..
Try deleting the file and download it again.. Re-scan that file and see what your AV tells you..