http://bugs.winehq.org/show_bug.cgi?id=28213
--- Comment #2 from A Wine user RandomAccountName@mail.com 2011-09-01 20:38:32 CDT --- Apparently, it's copying a file. I found the command used via KDE's system monitor:
C:\windows\system32\cmd.exe /d /q /c copy c:\6573cafa88dc5909f5aafb0b69ad\update\update.exe.manifest C:\windows\ie8\spuninst\spuninst.exe.manifest 2>nul 1>nul