Re: Increase probe on UDP port 1026

[<srenna () vdbmusic com>]

Have you also seen an increase in UDP port 1030 scans
coupled with the 1026 scan?

I've been seeing a good deal of it and notice that scans
are originating from Universities in the US, broadband
connections and some external to the US.

Interesting traffic to say the least.



On Mon, 1 Dec 2003 16:40:29 -0700
 Irwan Hadi <irwanhadi () phxby com> wrote:
> During the last a few hours, I've seen a huge jump in
> traffic to UDP
> port 1026 (Windows Messaging).
> I know that the exploit for MS03-043 has been released
> since around 2
> weeks ago, but that exploit as far as I know only works
> by using UDP
> port 135.
> One interesting pattern that I found out from the packet
> that Snort
> captured are:
> 1. One attacker host only send one packet to target host.
> 2. The attackers come from all over the world (which
> indicates a rapid
> infection)
> 3. The packet always contains (00 00 00 00 00) for the
> message part.
>
> Below is the Snort rule that I put in my IDS box
> alert udp !$USU_NET any -> any 1026 (msg:"MS03-043
> PROBE??";
> classtype:bad-unknown;) 
>
> And these are some of the packet that Snort capture:
>
> [**] MS03-043 PROBE?? [**]
> 12/01-15:45:08.986417 0:D0:4:F2:4C:A -> 0:B0:D0:29:D5:40
> type:0x800
> len:0x3C
> 200.176.192.151:1042 -> 129.123.x.x:1026 UDP TTL:111
> TOS:0x0 ID:33601
> IpLen:20 DgmLen:30
> Len: 2
> 0x0000: 00 B0 D0 29 D5 40 00 D0 04 F2 4C 0A 08 00 45 00
> ...).@....L...E.
> 0x0010: 00 1E 83 41 00 00 6F 11 AA 4C C8 B0 C0 97 81 7B
> ...A..o..L.....{
> 0x0020: 13 7E 04 12 04 02 00 0A D9 84 00 00 00 00 00 00
> .~..............
> 0x0030: 00 00 00 00 00 00 00 00 00 00 00 00
>              ............
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
> [**] MS03-043 PROBE?? [**]
> 12/01-14:01:19.788400 0:D0:4:F2:4C:A -> 0:2:B3:C9:36:64
> type:0x800
> len:0x3C
> 81.74.106.18:26246 -> 129.123.x.x:1026 UDP TTL:106
> TOS:0x0 ID:7877
> IpLen:20 DgmLen:30
> Len: 2
> 0x0000: 00 02 B3 C9 36 64 00 D0 04 F2 4C 0A 08 00 45 00
> ....6d....L...E.
> 0x0010: 00 1E 1E C5 00 00 6A 11 C8 EA 51 4A 6A 12 81 7B
> ......j...QJj..{
> 0x0020: 2C 48 66 86 04 02 00 0A 2C 32 00 00 00 00 00 00
> ,Hf.....,2......
> 0x0030: 00 00 00 00 00 00 00 00 00 00 00 00
>              ............
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
> [**] MS03-043 PROBE?? [**]
> 12/01-09:28:06.146677 0:D0:4:F2:4C:A -> 0:2:B3:E7:49:84
> type:0x800
> len:0x3C
> 62.243.125.82:1194 -> 129.123.x.x:1026 UDP TTL:114
> TOS:0x0 ID:6633
> IpLen:20 DgmLen:30
> Len: 2
> 0x0000: 00 02 B3 E7 49 84 00 D0 04 F2 4C 0A 08 00 45 00
> ....I.....L...E.
> 0x0010: 00 1E 19 E9 00 00 72 11 DD 95 3E F3 7D 52 81 7B
> ......r...>.}R.{
> 0x0020: 13 90 04 AA 04 02 00 0A A5 DD 00 00 00 00 00 00
> ................
> 0x0030: 00 00 00 00 00 00 00 00 00 00 00 00
>              ............
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
> [**] MS03-043 PROBE?? [**]
> 12/01-15:47:16.721798 0:D0:4:F2:4C:A -> 0:8:A1:21:91:D8
> type:0x800
> len:0x3C
> 140.228.112.8:1478 -> 129.123.x.x:1026 UDP TTL:118
> TOS:0x0 ID:43359
> IpLen:20 DgmLen:30
> Len: 2
> 0x0000: 00 08 A1 21 91 D8 00 D0 04 F2 4C 0A 08 00 45 00
> ...!......L...E.
> 0x0010: 00 1E A9 5F 00 00 76 11 09 69 8C E4 70 08 81 7B
> ..._..v..i..p..{
> 0x0020: 13 9F 05 C6 04 02 00 0A 64 0B 00 00 00 00 00 00
> ........d.......
> 0x0030: 00 00 00 00 00 00 00 00 00 00 00 00
>              ............
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
> [**] MS03-043 PROBE?? [**]
> 12/01-13:46:34.522088 0:D0:4:F2:4C:A -> 0:8:A1:B:6F:6A
> type:0x800
> len:0x3C
> 24.157.247.137:1076 -> 129.123.x.x:1026 UDP TTL:109
> TOS:0x0 ID:30415
> IpLen:20 DgmLen:30
> Len: 2
> 0x0000: 00 08 A1 0B 6F 6A 00 D0 04 F2 4C 0A 08 00 45 00
> ....oj....L...E.
> 0x0010: 00 1E 76 CF 00 00 6D 11 31 80 18 9D F7 89 81 7B
> ..v...m.1......{
> 0x0020: 13 DE 04 34 04 02 00 0A 52 24 00 00 00 00 00 00
> ...4....R$......
> 0x0030: 00 00 00 00 00 00 00 00 00 00 00 00
>              ............
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
> Any idea?
>
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