full-disclosure - New Worm Discovery - Potential Korgo Variant

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Message-ID: <200406241014296.SM03076@mike>
From: mikeyoung at milestechnologies.com (Michael Young)
Subject: New Worm Discovery - Potential Korgo Variant

The worm clearly exploits the LSASS overflow and is not spreading through
the FTP dameon left by Sasser.

-----Original Message-----
From: Cedric Blancher [mailto:blancher@...tel-securite.fr] 
Sent: Thursday, June 24, 2004 10:04 AM
To: Michael Young
Cc: full-disclosure@...ts.netsys.com
Subject: Re: [Full-Disclosure] New Worm Discovery - Potential Korgo Variant

Le jeu 24/06/2004 ? 14:57, Michael Young a ?crit :
> Yesterday a large client of ours was taken down by what appears to be
> a Korgo variant, but I have been unable to locate any information on
> this worm.  From what we have discovered, the main process is
> ?VDisp.exe?.  It is spreading through unpatched systems vulnerable to
> the LSASS exploit, and propagates itself through a serious of randomly
> chosen ports.

Korgo exploits a buffer overflow within FTP daemon installed by Sasser.
That would mean your client systems were previously infected by
Sasser...

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