New LSASS-based worm finally here (Sasser)

[Ben Ryan]

As expected, LSASS exploit-based worm seems to have arrived. Fasten your
seatbelts, those unpatched please use the spew bags provided :)
I hope PSS resolves the issues discussed in KB835732.



Sasser Worm: http://isc.sans.org/diary.php?date=2004-04-30

"ISC is aware of the LSASS Sasser worm. This worm is spreading through the MS04-011 (LSASS) vulnerability.
According to AV companies, this worm will generate traffic on ports 445, 5554 and 9996.
Also, it will copy itself in the windows folder, under the name of avserve.exe,
create a file at c:\ called win.log and add the registry.."



http://isc.sans.org/diary.php?date=2004-04-30


________.-~-.________
Ben Ryan
Forrest Computing and Consulting
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Email: ben(at)bssc.edu.au
Email: ben.ryan(at)forrestcomputing.com.au

[Javier Fernandez-Sanguino]

Ben Ryan wrote:

> As expected, LSASS exploit-based worm seems to have arrived. Fasten your
> seatbelts, those unpatched please use the spew bags provided :)
> I hope PSS resolves the issues discussed in KB835732.

What's more disturbing is that this worm has established a new record
for Microsoft worms [1]. Blaster was the fastest worm (25 days since
the patch was published to the worm), this one has been even faster
(17 days for the first variant since the patch was published to the
worm). Of course, I'm not considering the fact that this issue was
known, at least to eEye and Microsoft, for over 5 months.

Regards

Javier

[1] Approaching the record of worms in other OS, which, I believe, is
held by Scalper (10 days from patch to worm). But hey, they could
browse the source changes for that one.