RE: DDoS to microsoft sites

From: Ad***, Matt (Matt.Ad***@gsccca.org)
Date: 01/30/02 

From: "Ad***, Matt" <Matt.Ad***@gsccca.org>
To: "'Bronek Kozicki'" <brok@rubikon.pl>, Mike Lewinski <mike@rockynet.com>
Date: Wed, 30 Jan 2002 12:47:09 -0500

The fact that ports are listening for SQL traffic, NetBIOS traffic, and HTTP
requests ***have absolutely nothing to do with being rooted**. According to
your logic, the only way to make a secure machine is to shut everything off.
That's absolutely ridiculous. Guess what, these servcies are on lots of
Windows machines, including mine, but are protected by firewalls.

I'd really like for you to explain to me how a Windows network will run
without NetBIOS. Try shutting it down sometime - you'll break your Windows
network, even 2000. I'd also like for you to explain to me how you can
brute force attack admin accounts just because NetBIOS is open.

Matt

-----Original Message-----
From: Bronek Kozicki [mailto:brok@rubikon.pl]
Sent: Wednesday, January 30, 2002 3:21 AM
To: Mike Lewinski
Cc: incidents@securityfocus.com
Subject: Re: DDoS to microsoft sites

Hello

Wednesday, January 30, 2002, 12:23:51 AM, you wrote:
> A port scan of one of the infected hosts shows:

> 7 Echo
> 9 Discard
> 13 Daytime
> 17 Quote of the Day
> 19 Character Generator
> 21 File Transfer Protocol [Control]
> 25 Simple Mail Transfer
> 80 World Wide Web HTTP
> 135 DCE endpoint resolution
> 139 NETBIOS Session Service
> 443 https MCom
> 445 Microsoft-DS
> 548 AFP over TCP
> 1025 network blackjack
> 1026
> 1027 ICQ?
> 1433 Microsoft-SQL-Server
> 5631 pcANYWHEREdata

> The client claims that they are not running Appletalk (548) but I'm not
sure
> whether to believe. We haven't been able to get console access to that
> machine to do any further investigation (but have blocked it upstream). Of
> the above services, most look legit from what I can tell with the
exception
> of 548 and 1025-1027

Most probably your client has been rooted. Among above services,
following are especially easy to hack:
- netbios (brute force attack on Administrator account)
- http (whole lot of exploits, running on nonpatched IIS)
- sql-server (default empty password for 'sa' account; brute force
attack if password is not empty)

I think you client have no idea what's going on their servers, and
they will keep claiming that "everything is fine" till they find their
data at the competition site :/ From above list its almost obvious
that they do not have a clue about security and should not be
connected to the Internet.

Kind regards,

B.

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