full-disclosure - Yet another version of a worm mass mail? (Paypal.com new year offer)

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From: nick at virus-l.demon.co.uk (Nick FitzGerald)
Subject: Yet another version of a worm mass mail?
 (Paypal.com new year offer)

Michael Renzmann <security@...anic.de> wrote:

> I received a mail which is said to be from Paypal.com (has been sent 
> from an IP that is registered to an ISP in Venezuela), subject is 
> "PAYPAL.COM NEW YEAR OFFER". Attached is a file called "paypal.zip" that 
> contains a file "paypal.exe" (2592 bytes).
> 
> Is this yet another variant of a well-known mass mailing worm, or is 
> this something new? I saved that mail, so if someone wants to take a 
> closer look at it, let me know.

Almost certainly a new downloader (i.e. detected by _very few_ virus 
scanners) that was spammed in just the manner you describe earlier 
today.  Instead of sending the existing (and well-detected) Mimail.P, 
someone spammed out this ~2KB downloader which, if run by your typical 
victim of such scams would snag a copy of Mimail.P from a Russian web 
server and run it on the victim's machine.  A few minutes ago the file 
at said Russian site was still Mimail.P but it could presumably be 
relaced at any time with anything else.

-- 
Nick FitzGerald
Computer Virus Consulting Ltd.
Ph/FAX: +64 3 3529854