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List:       incidents
Subject:    RE: Increase in scans on TCP port 1 (tcpmux)?
From:       Joe Luna <joe.luna () kinkos ! com>
Date:       2003-08-25 17:38:10
[Download RAW message or body]

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_cat@yahoo.com] 
Sent: Thursday, August 21, 2003 8:36 AM
To: incidents@securityfocus.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

26

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

26

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

7

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

8

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

7

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

7

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

3

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

3

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

1

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

1

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

21

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

21

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

1

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

1

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

9

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

9

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

5

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

5

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

16

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

6

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

6

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

7

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

09

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

09

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

08

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

08

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

8

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

8

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

9

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

9

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

09

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

09

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

8

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

8

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Attend Black Hat Briefings & Training Federal, September 29-30 (Training), 
October 1-2 (Briefings) in Tysons Corner, VA; the world's premier 
technical IT security event.  Modeled after the famous Black Hat event in 
Las Vegas! 6 tracks, 12 training sessions, top speakers and sponsors.  
Symantec is the Diamond sponsor.  Early-bird registration ends September 6.Visit us: www.blackhat.com
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