New threat going around "Please find attached our purchase order" / 2017-07-19

E-mail with subject starting with "Please find attached our purchase order number" and a zip, with a zip in it with in that zip an .exe file.

Archive:  PO185 - 188207 X.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
   341805  2017-07-19 04:55   PO362 - 867977 X.zip
---------                     -------
   341805                     1 file

Archive:  PO362 - 867977 X.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
   431458  2017-07-19 15:32   PO362 - 867977 X.exe
---------                     -------
   431458                     1 file

I guess the .exe will cause some serious damage in Windows operating systems. The size is huge, where is the time virus writes tried to stay below 1024 bytes!