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Re: Hidden windows ports, files and services.
From: "Egemen Tas" <egemen.tas () gmail com>
Date: Mon, 20 Dec 2004 21:40:31 +0200 (GTB Standard Time)

 The process is possibly one of the rootkits(or modified versions of)  which
can be found from the www.rootkit.com . There is a tool to detect any hidden
process. You can find that tool from that site too http://www.rootkit
com/newsread.php?newsid=170 . This is an experimental tool but you can give
it a try. It will find the hidden rootkit.





Good luck,



Egemen Tas





 

-------Original Message-------

 

From: Mark Reis

Date: 12/20/04 21:01:53

Cc: security-basics () securityfocus com

Subject: Hidden windows ports, files and services.

 

Hello,

 

Being at a University, I get to deal with my fair share of compromised

machines. Over the past year or so, I've started to notice that hackers

are getting smarter along with Microsoft making things more complicated

with XP SP2. I'm hoping that other members of this list might be able to

help resolve or know of a work around.

 

I'm not interested in discussion in how to secure these machines, I do

what I can within the inherent bureaucracy of the system. :)

 

Hidden files:

 

One of the most common things I see is hackers hiding a FTP server for

questionable material in the RECYCLER. Assume that I am logged in as the

local administrator, the machine is disconnected from the network, and

explorer has been set to show all files. The offending process has been

found and removed, and I'd like to analyze the ftp server. The default

behavior of Windows XP is to hide the contents of the C:\RECYCLER\UID.

Prior to XP SP2, I used to be able to go through the c$ share and see

the contents via \\machine\c$\recycler\UID. However with XP SP2, this

option was removed. Ultimately, I now need to download and use cygwin to

list the directory contents.

 

Does anyone know how to get XP to show *everything* - The same thing

applies to XP hiding the IE cache.

 

 

Hidden Process:

 

A machine was recently compromised and the only way I was aware of this

was by doing an nmap port scan of the system. NMAP 3.75 showed a ftp

server on a non-standard port. Using ncftp, I was able to connect to

this server.

 

ncftp -P 1475 compromised machine -u anonymous

NcFTP 3.1.7 (Jan 07, 2004) by Mike Gleason (http://www.NcFTP.com/contact/).

Connecting to ....

 

FTP Server ready.

Login incorrect.

 

Sleeping 20 seconds...

 

However, when in front of the machine, I've run Active Ports, Fport and

TCPView. None of which list a process as listening on that port. I even

downloaded fresh version of each and tried again. No luck. This is quite

disturbing...

 

Does anyone have a suggestion on how to determine what process this is?

 

Thank you,

Mark Reis


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