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Neohapsis > Archives > Incidents> 2003-08

RE: Increase in scans on TCP port 1 (tcpmux)?

From: Joe Luna (joe.lunakinkos.com)
Date: Mon Aug 25 2003 - 12:38:10 CDT

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I have noticed this also; my logs show an increase in this type of
traffic starting on 08/20 23:06:05 PDT.

Here is a list of sources:

24.107.xxx.xxx
24.114.xxx.xxx
24.118.xxx.xxx
24.118.xxx.xxx
24.120.xxx.xxx
24.125.xxx.xxx
24.126.xxx.xxx
24.126.xxx.xxx
24.126.xxx.xxx
24.128.xxx.xxx
24.128.xxx.xxx
24.128.xxx.xxx
24.129.xxx.xxx
24.129.xxx.xxx
24.129.xxx.xxx
24.129.xxx.xxx
24.91.xxx.xxx
24.98.xxx.xxx

-Joe

-----Original Message-----
From: Kevin Patz [mailto:jambo_catyahoo.com]
Sent: Thursday, August 21, 2003 8:36 AM
To: incidentssecurityfocus.com
Subject: Increase in scans on TCP port 1 (tcpmux)?

Over the past couple days I've noticed an increase in

scans targeting TCP port 1. While looking at my logs,

I noticed an odd pattern to the Source IPs of these

scans. If you look at the listing below, it looks

like the scans started coming from 24.62, then 24.61,

24.60, 20.59, and 24.58 IP addresses. 24.60 thru

24.62 belong to attbi (now Comcast), 24.58 thru 24.59

belong to Time Warner Cable (RoadRunner), Syracuse NY.

Has anyone else seen these? Any ideas what they could

be? I'm guessing from the pattern that either it's a

backdoor trojan that's being exploited to trigger

scans, and the controlling hacker is hitting IP ranges

sequentially in decreasing order, or the source IPs

are spoofed.

Date, Time(EST), Source:Port, Dest:Port, TTL

8/20/2003,22:29:26,24.62.162.192:1667,24.62.xxx.xxx:1,1

8/20/2003,23:32:19,24.62.162.192:1956,24.62.xxx.xxx:1,1

8/20/2003,23:46:14,24.62.135.7:4489,24.62.xxx.xxx:1,117

8/20/2003,23:46:17,24.62.135.7:4489,24.62.xxx.xxx:1,118

8/20/2003,23:50:28,24.62.135.22:4546,24.62.xxx.xxx:1,11

8/20/2003,23:50:31,24.62.135.22:4546,24.62.xxx.xxx:1,11

8/21/2003,00:43:26,24.62.50.205:4747,24.62.xxx.xxx:1,11

8/21/2003,00:43:29,24.62.50.205:4747,24.62.xxx.xxx:1,11

8/21/2003,01:34:34,24.61.141.26:1911,24.62.xxx.xxx:1,12

8/21/2003,01:34:37,24.61.141.26:1911,24.62.xxx.xxx:1,12

8/21/2003,01:58:55,24.61.171.35:2841,24.62.xxx.xxx:1,12

8/21/2003,01:58:58,24.61.171.35:2841,24.62.xxx.xxx:1,12

8/21/2003,02:08:07,24.61.170.195:2610,24.62.xxx.xxx:1,1

8/21/2003,02:08:10,24.61.170.195:2610,24.62.xxx.xxx:1,1

8/21/2003,02:53:29,24.61.20.136:4690,24.62.xxx.xxx:1,12

8/21/2003,02:53:32,24.61.20.136:4690,24.62.xxx.xxx:1,12

8/21/2003,03:35:02,24.60.214.72:1854,24.62.xxx.xxx:1,11

8/21/2003,03:35:05,24.60.214.72:1854,24.62.xxx.xxx:1,11

8/21/2003,04:49:49,24.60.88.189:3873,24.62.xxx.xxx:1,11

8/21/2003,04:49:52,24.60.88.189:3873,24.62.xxx.xxx:1,11

8/21/2003,05:41:36,24.60.109.210:2508,24.62.xxx.xxx:1,1

8/21/2003,06:18:38,24.60.36.124:3409,24.62.xxx.xxx:1,11

8/21/2003,06:18:41,24.60.36.124:3409,24.62.xxx.xxx:1,11

8/21/2003,07:09:44,24.59.127.69:2172,24.62.xxx.xxx:1,10

8/21/2003,07:22:54,24.59.104.254:3814,24.62.xxx.xxx:1,1

8/21/2003,07:22:57,24.59.104.254:3814,24.62.xxx.xxx:1,1

8/21/2003,07:24:15,24.59.99.37:1350,24.62.xxx.xxx:1,108

8/21/2003,07:24:18,24.59.99.37:1350,24.62.xxx.xxx:1,108

8/21/2003,07:35:39,24.59.141.186:3722,24.62.xxx.xxx:1,1

8/21/2003,07:35:42,24.59.141.186:3722,24.62.xxx.xxx:1,1

8/21/2003,08:42:59,24.58.227.72:4253,24.62.xxx.xxx:1,10

8/21/2003,08:43:02,24.58.227.72:4253,24.62.xxx.xxx:1,10

8/21/2003,09:06:22,24.58.235.75:2041,24.62.xxx.xxx:1,10

8/21/2003,09:06:25,24.58.235.75:2041,24.62.xxx.xxx:1,10

8/21/2003,10:01:09,24.58.119.204:2355,24.62.xxx.xxx:1,1

8/21/2003,10:01:12,24.58.119.204:2355,24.62.xxx.xxx:1,1

8/21/2003,10:56:16,24.59.58.234:2318,24.62.xxx.xxx:1,10

8/21/2003,10:56:19,24.59.58.234:2318,24.62.xxx.xxx:1,10

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