Curious worm virus email

I have received a rather curious virus in my Inbox. The email reads:

Mail server report.
Our firewall determined the e-mails containing worm copies are being sent from your computer.
Nowadays it happens from many computers, because this is a new virus type (Network Worms).
Using the new bug in the Windows, these viruses infect the computer unnoticeably.
After the penetrating into the computer the virus harvests all the e-mail addresses and sends the copies of itself to these e-mail addresses
Please install updates for worm elimination and your computer restoring.

Best regards,
Customers support service

The file has an attachment, which I assume will contain the real virus. There are several elements that leads one to believe this is not real: the painful English, the dodgy zip attachment, the fact that it comes from motorsportwarehouse.com, etc. However, I can imagine a better drafted email that would catch more people.