It is a harmless memory resident parasitic Win9x virus. It stays in Windows memory as VxD (system) driver, hooks Windows file open function (by intercepting IFS API chain), then writes itself to the end of PE EXE files that are opened.
The virus does not manifest itself in any way. It contains the text string:
[Win95.Molly] (c) 1999 Billy Belcebu/iKX
