[unisog] Sobig.f with stripped attachments.
brennan at columbia.edu
Wed Aug 27 12:57:19 GMT 2003
> We've been inundated with email from Sobig.f which did not
> include the attachment. . . .
> Well, yesterday we saw the ``stripped off'' attachments originating
> from a local machine.
Confirmed-- many of these, and a sample from a local PC came
straight to our mail server. The Content-Type says multipart
but it actually has only the one text/plain part.
It can be caught by checking for the distinctive mime boundary string
/boundary=\"_NextPart_000_........\"/ in the Content-Type header,
the same as messages with the actual virus.
We had 375,000 yesterday-- that combines the virus and the messages
missing the virus.
Joseph Brennan Columbia University in the City of New York
Academic Technologies Group brennan at columbia.edu
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