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Re: RPC errors - DDoS on the 16th?
From: Eric Kuhnke <eric () fnordsystems com>
Date: Tue, 12 Aug 2003 17:54:17 -0700


Has anyone else seen this claim?  Somebody at F-Secure thinks the worm will begin a DDoS against 
windowsupdate.microsoft.com on the 16th.

At 03:08 PM 8/12/2003 -0700, you wrote:
This should help some for people who are worried


"Steven M. Bellovin" <smb () research att com> wrote:

In message , 
"Dominic J. Eidson" writes:

On Mon, 11 Aug 2003, Jack Bates wrote:

Sean Donelan wrote:

The worm uses the RPC DCOM vulnerability to propagate. One it finds a
vulnerable system, it will spawn a shell and use it to download the actual
worm via tftp.

The name of the binary is msblast.exe. It is packed with UPX and will self
extract. The size of the binary is about 11kByte unpacked, and 6kBytes

Has anyone seen/heard of this virus propagating through email in any way?

We appear to have been infected on a network that is very heavily
firewalled from the outside, and are trying to track down possibly entry
methods the worm might have had...

A large number of networks have unknown and unauthorized back doors. 
If it's a decent-sized network and you haven't audited it, don't assume 
that the firewalling is effective. (My co-author on "Firewalls and 
Internet Security" book, Bill Cheswick, is CTO of a startup that maps 
intranets for just this reason.)

--Steve Bellovin, http://www.research.att.com/~smb

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