Hi Randall. Check out this post 30/1/02. Sounds like
you may have just found your Huckelberry! Same port -
and service name - different prognosis however.
Danny P
e-Secure-it.co.nz
Subject: DDoS to microsoft sites
Follow Up Flag: Follow up
Flag Status: Flagged
We've observed two disparate clients apparently rooted
(both are Win2K I
believe), being used to packet flood a variety of
Microsoft sites (msn.com,
hotmail.com and microsoft.com itself).
Just a few seconds of IP accounting showed:
Destination Packets Bytes
64.4.32.251 14201
20940508
207.68.171.254 11862
17764328
64.4.32.1 12142
18184104
207.46.197.102 59698
89401960
These clients are on very different CIDR blocks (from
the first octet). We
don't have any further information at this time, other
than one client
saturated their T1 and the other saturated a 10Mb/s
connection.
I haven't observed any noticeable impacts to the
microsoft sites being
attacked. We have been able to track back the activity
on MRTG graphs to
last Thurs for both clients. We investigated the
traffic volume the first
day it appeared and at that time saw what appeared to
be an attack against
two hosts in .fr and one in .de. The client assured us
at this time it was
legitimate traffic.
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
Mike
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--- randall perry <randallp@domain-logic.com> wrote:
> Greets.
>
> An IIS box I manage freaked out yesterday. I
> initially thought that it came under attack but
> after digging through what was left of the crime
> scene, it looks like MS is to blame. The most
> recent event before the nightmare began was at 7pm
> the night was the creation of c:\program
> files\WindowsUpdate\wuaudnld.tmp\. That tells me
> that an automagic MS Windows update is what is the
> root of trashing that ecommerce box that took all
> day yesterday to recover (after 2 BSODs trashing it
> to it to the point of not having network
> connectivity) .
>
> If that wouldn't have happened, I probably would not
> have found the following:
> hum.exe which is really leech ftp server was
> installed on the box and setup as service to start
> with the box. I found more than 30 gig of files
> (movies, MP3s) were there under
> d:\i386\winnt[some characters]\system32\system32\
> and some funny directory names. The movies were
> broken into 14meg chunks, but had sample avi files
> in the directory that showed a short clip of what
> the movie was.
>
> I have no idea how this got planted there by who.
> (only the office manager and graphics person are the
> only ones to access the box)
>
> A port scan of the box showed the following ports
> open
> |___ 21 [ftp] File Transfer
> [Control]
> |___ 25 [smtp] Simple Mail Transfer
> |___ 80 [http] World Wide Web HTTP
> |___ 135 [epmap] DCE endpoint resolution
> |___ 389 [ldap] Lightweight Directory Access
> Protocol
> |___ 433 [nnsp] NNSP
> |___ 443 [https] https MCom
> |___ 445 [microsoft-ds] Microsoft-DS
> |___ 1025 [blackjack] network blackjack
> |___ 1027 [ICQ] ICQ?
>
> Although typically network blackjack on port 1025, I
> can assume that was the leech ftp server controlled
> through port 1027. Anyone else see this?
>
> Randall Perry
>
>
>
>
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This archive was generated by hypermail 2b30 : Mon Nov 11 2002 - 13:21:26 PST