Apenas encontrei este um colado abaixo. Você pode executá-lo com o cscript e programá-lo.
'Set your settings
strFileURL = "http://www.domain.com/file.zip" strHDLocation = "D:\file.zip" ' Fetch the file Set objXMLHTTP = CreateObject("MSXML2.XMLHTTP") objXMLHTTP.open "GET", strFileURL, false objXMLHTTP.send() If objXMLHTTP.Status = 200 Then Set objADOStream = CreateObject("ADODB.Stream") objADOStream.Open objADOStream.Type = 1 'adTypeBinary objADOStream.Write objXMLHTTP.ResponseBody objADOStream.Position = 0 'Set the stream position to the start Set objFSO = Createobject("Scripting.FileSystemObject") If objFSO.Fileexists(strHDLocation) Then objFSO.DeleteFile strHDLocation Set objFSO = Nothing objADOStream.SaveToFile strHDLocation objADOStream.Close Set objADOStream = Nothing End if Set objXMLHTTP = Nothing