To me this looks like some malware. Since no mention of an app I can't off much more than I'd use Grif's advice at the next link.
Dell Studio 1735 laptop/desktop replacement
Vista Home Premium
Dynamic Link Library Issues (FIX w/o registry patrol):
Error loading odbc_isv.dll
The specified module could not be found.
Error loading C:\accountuser\AppData\Local\atudefe.dll
c:\Users\account\AppData\Local\atudefe.dll is not a valid Win32 application.