SANS ISC: Conficker patch via email?

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SANS ISC InfoSec Forums

Microsoft does not send patches, updates, anti-virus, or anti-spyware via email (hopefully ever). The following ended up in my inbox this aft. The subject was: Conflicker.B Infection Alert

"Dear Microsoft Customer,

Starting 12/11/2009 the ‘Conficker’ worm began infecting Microsoft customers unusually rapidly. Microsoft has been advised by your Internet provider that your network is infected.

To counteract further spread we advise removing the infection using an antispyware program. We are supplying all effected Windows Users with a free system scan in order to clean any files infected by the virus.

Please install attached file to start the scan. The process takes under a minute and will prevent your files from being compromised. We appreciate your prompt cooperation.

Regards,
Microsoft Windows Agent #2 (Hollis)
Microsoft Windows Computer Safety Division"

Attachment is 3YMH6JJY.zip application/zip 45.82 KB and detection at Virustotal is soso: https://www.virustotal.com/analisis/5d8caa7c9baaed6242e3842e0dafea5056f41d9c99732f0fd2961bedff647ae5-1258134283

Cheers,
Adrien de Beaupré
EWA-Canada.com