full-disclosure - ISS Security Brief: "MS Blast" MSRPC DCOM Worm Propagation (fwd)

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From: richard at tccnet.co.uk (Richard Stevens)
Subject: ISS Security Brief: "MS Blast" MSRPC DCOM Worm Propagation (fwd)

I must be missing something here... xp home & pro both have a "click and forget" firewall?
 
why arent people using it?
 

	-----Original Message----- 
	From: Chris Garrett [mailto:somatose@....net] 
	Sent: Tue 12/08/2003 05:59 
	To: full-disclosure@...ts.netsys.com 
	Cc: 
	Subject: Re: [Full-Disclosure] ISS Security Brief: "MS Blast" MSRPC DCOM Worm Propagation (fwd)
	
	

	I had a friend infected with the worm earlier today, at about 17:00EST. He was
	running Windows XP Home edition. He called me because his computer had been
	rebooting "spontaneously," and whenever he would go to google to search for a
	strange binary he saw [msblast.exe], he either found nothing or was mysterious
	redirected to some strange website. At least, I believe that was his
	description. I hadn't seen any reports of MSBlast on FD before this point, but I
	was almost certain it was a worm of some sort using the DCOM RPC exploit. I had
	him check the registry, remove the keys, and delete .*msblast.*. I also had him
	disable DCOM, since I doubted he was using anything that utilized it, then
	directed him to the MS03-26 patch. This was all based on a guess that it he was
	infected by something DCOM related [makes sense given the massive publicity and
	severity of this vulnerability]. I wasn't certain if any other files were
	corrupted at the time, but those simple measures seemed to do the job. Imagine
	my surprise when 10 minutes later, I receive and FD email reporting the release
	of a worm identified by an msblast binary.
	
	My friend also reported to me that /somehow/ his Norton Auto-Protect had been
	disabled. Now, I don't know if that was the worm [as I've not seen any analyses
	thusfar to suggest that the worm does that], or if it was something he had
	disabled, accidentally, at some point.
	
	In short, XP is affected, as well. And I would imagine his computer kept
	rebooting because other systems within the class B range he was on were
	constantly probing his system and trying the 2K offset, and not because of the
	worm that had already infected his system [which was my original, incorrect,
	impression, before the analyses put out by ISC, XFocus, and Norton].
	
	Christopher Garrett III
	Inixoma, Incorporated
	
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