FTP/Port 1038

From: Hoof Hearted <capbligh2001(at)hotmail.com>
Date: Tue Feb 04 2003 - 13:49:55 EST

Hi All

At 10:21 GMT today we had an incidence of an ftp user accessing a ServU (Version 2.5f) server through a NAT. A few seconds later the firewall noted an inbound 'probe' on port 1038 (to the w/s - this port is not in the NAT)

The workstation firewall picked up as follows:
>2003/02/04 10:21:26 203.198.145.93:6718 (mail.hyprint.com) 192.168.1.9:1038
>Port 1038 (TCP)

The ftp logs show:
>[5] Tue 04Feb03 06:20:20 - (000007) Connected to 199.18.36.14 (Local
>address 192.168.1.9)
>[6] Tue 04Feb03 06:20:20 - (000007) 220 Serv-U FTP-Server v2.5f for WinSock
>ready...
>[2] Tue 04Feb03 06:20:20 - (000007) USER anonymous
>[6] Tue 04Feb03 06:20:20 - (000007) 331 User name okay, please send
>complete E-mail address as password.
>[2] Tue 04Feb03 06:20:21 - (000007) PASS Ngpuser@home.com
>[5] Tue 04Feb03 06:20:21 - (000007) ANONYMOUS logged in, password:
>NGPUSER@HOME.COM
>[6] Tue 04Feb03 06:20:21 - (000007) 230 User logged in, proceed.
>[2] Tue 04Feb03 06:20:21 - (000007) CWD /pub/
>[6] Tue 04Feb03 06:20:21 - (000007) 550 /pub: No such file or directory.
>[2] Tue 04Feb03 06:20:21 - (000007) CWD /public/
>[6] Tue 04Feb03 06:20:21 - (000007) 550 /public: No such file or directory.
>[2] Tue 04Feb03 06:20:21 - (000007) CWD /pub/incoming/
>[6] Tue 04Feb03 06:20:21 - (000007) 550 /pub/incoming: No such file or
>directory.
>[2] Tue 04Feb03 06:20:21 - (000007) CWD /incoming/
>[6] Tue 04Feb03 06:20:21 - (000007) 550 /incoming: No such file or
>directory.
>[2] Tue 04Feb03 06:20:22 - (000007) CWD /_vti_pvt/
>[6] Tue 04Feb03 06:20:22 - (000007) 550 /_vti_pvt: No such file or
>directory.
>[2] Tue 04Feb03 06:20:22 - (000007) CWD /
>[6] Tue 04Feb03 06:20:22 - (000007) 250 Directory changed to /
>[2] Tue 04Feb03 06:20:22 - (000007) MKD 030204011853p
>[6] Tue 04Feb03 06:20:22 - (000007) 550 /030204011853p: Permission denied.
>[2] Tue 04Feb03 06:20:22 - (000007) CWD /upload/
>[6] Tue 04Feb03 06:20:22 - (000007) 550 /upload: No such file or directory.
>[5] Tue 04Feb03 06:20:22 - (000007) Closing connection for user ANONYMOUS
>(00:00:02 connected)
>[5] Tue 04Feb03 07:18:07 - (000008) Connected to 196.1.95.197 (Local
>address 192.168.1.9)
>[6] Tue 04Feb03 07:18:07 - (000008) 220 Serv-U FTP-Server v2.5f for WinSock
>ready...
>[5] Tue 04Feb03 07:18:07 - (000008) Closing connection
>[1] Tue 04Feb03 10:06:39 - FTP server going down...
>[1] Tue 04Feb03 10:16:03 - Starting FTP Server... (Version 2.5f (32-bit))
>[5] Tue 04Feb03 10:21:20 - (000001) Connected to 203.198.145.93 (Local
>address 192.168.1.9)
>[6] Tue 04Feb03 10:21:20 - (000001) 220 Serv-U FTP-Server v2.5f for WinSock
>ready...
>[5] Tue 04Feb03 10:21:20 - (000001) IP-Name: MAIL.HYPRINT.COM
>[2] Tue 04Feb03 10:21:21 - (000001) USER anonymous
>[6] Tue 04Feb03 10:21:21 - (000001) 331 User name okay, please send
>complete E-mail address as password.
>[2] Tue 04Feb03 10:21:21 - (000001) PASS ano@ano.com
>[5] Tue 04Feb03 10:21:21 - (000001) ANONYMOUS logged in, password:
>ANO@ANO.COM
>[6] Tue 04Feb03 10:21:21 - (000001) 230 User logged in, proceed.
>[2] Tue 04Feb03 10:21:22 - (000001) TYPE I
>[6] Tue 04Feb03 10:21:22 - (000001) 200 Type set to I.
>[2] Tue 04Feb03 10:21:22 - (000001) STRU F
>[6] Tue 04Feb03 10:21:22 - (000001) 200 STRU F ok.
>[2] Tue 04Feb03 10:21:22 - (000001) MODE S
>[6] Tue 04Feb03 10:21:22 - (000001) 200 MODE S ok.
>[2] Tue 04Feb03 10:21:23 - (000001) REST 0
>[6] Tue 04Feb03 10:21:23 - (000001) 350 Restarting at 0 - send STORE or
>RETRIEVE to initiate transfer.
>[2] Tue 04Feb03 10:21:23 - (000001) REST 1
>[6] Tue 04Feb03 10:21:23 - (000001) 350 Restarting at 1 - send STORE or
>RETRIEVE to initiate transfer.
>[2] Tue 04Feb03 10:21:24 - (000001) REST 0
>[6] Tue 04Feb03 10:21:24 - (000001) 350 Restarting at 0 - send STORE or
>RETRIEVE to initiate transfer.
>[2] Tue 04Feb03 10:21:24 - (000001) SYST
>[6] Tue 04Feb03 10:21:24 - (000001) 215 UNIX Type: L8
>[2] Tue 04Feb03 10:21:25 - (000001) PASV
>[6] Tue 04Feb03 10:21:25 - (000001) 227 Entering Passive Mode
>(192,168,1,9,4,14)
>[5] Tue 04Feb03 10:22:06 - (000001) Closing connection for user ANONYMOUS
>(00:00:46 connected)

A cursory investigation noted that the 'probe' (allegedly from mail.hyprint.com) came from a machine that thinks it's mail.hyprint.com.hk (seemingly no connection to hyprint.com who have a very different MX config)

I might, at a push, believe this is a new user with a very open box, except, the box seems to be a W2K advanced server with M$ Exchange 2000 and DNS set up (alongside, RAdmin, ServUFTP 2.5j etc etc.) all running (apparently) behind a Linksys router (ip +8080).

Anyway - there's the heads up. :)

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This list is provided by the SecurityFocus ARIS analyzer service. For more information on this free incident handling, management and tracking system please see: http://aris.securityfocus.com Received on Tue Feb 4 17:23:42 2003