nanog mailing list archives

Re: Tracing where it started


From: "Johannes Ullrich" <jullrich () euclidian com>
Date: Sat, 25 Jan 2003 19:05:05 -0500



Here are the IPs I got at 5:29:40 GMT, the time I got 10 packets / second

 +-----------------+
| source          |
+-----------------+
| 216.069.032.086 |  Kentucky Community and Technical College System
| 066.223.041.231 |  Interland
| 216.066.011.120 |  Hurricane Electric
| 216.098.178.081 |  V-Span, Inc.
+-----------------+

Here the traffic on port 1434 broken down to seconds around that time
(note: I get data from diverse sources, so clock drifts may be an issue)

| 05:29:33 |        7 |
| 05:29:34 |        8 |
| 05:29:35 |        4 |
| 05:29:36 |        8 |
| 05:29:37 |        7 |
| 05:29:38 |        7 |
| 05:29:39 |        5 |
| 05:29:40 |       10 |
| 05:29:41 |       12 |
| 05:29:42 |       14 |
| 05:29:43 |       12 |
| 05:29:44 |       16 |
| 05:29:45 |       18 |
| 05:29:46 |       20 |



On Sat, 25 Jan 2003 17:32:17 -0500
"Travis Pugh" <tdp () discombobulated net> wrote:



According to Clayton Fiske:

Interestingly, looking through my logs for UDP 1434, I saw a
sequential
scan of my subnet like so:

Jan 16 08:15:51 206.176.210.74,53 -> x.x.x.1,1434 PR udp len 20 33
IN
Jan 16 08:15:51 206.176.210.74,53 -> x.x.x.2,1434 PR udp len 20 33
IN
Jan 16 08:15:51 206.176.210.74,53 -> x.x.x.3,1434 PR udp len 20 33
IN

All from 206.176.210.74, all source port 53 (probably trying to
use people's DNS firewall rules to get around being filtered).

After that, I saw nothing until the storm started last night from
many
different source IPs, which was at Jan 24 21:31:53 PST for me.

Ditto on the sequential scan well before the actual action, except
that mine came on Jan. 19th:

Jan 19 10:59:11 Deny inbound UDP from 67.8.33.179/1 to xxx.xxx.xxx.xxx
...
...

The scan went across several subnets I manage inside 209.67.0.0
serially.  My sources were all from 67.8.33.179, all source port 1.
The actual worm propagation began to hit my logs at 00:28:16 EST Jan
25.

Cheers.

-travis




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jullrich () euclidian com             Collaborative Intrusion Detection
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