RE: Malware/trojan attacks

[lucretias <lucretias () shaw ca>]

In this case I think you have mislabed a trojan with a rootkit.

You should determine (if possible) what rootkit has infected the machine.
It sounds like a new variant or perhaps a new tool altogether.

I would suggest wiping the box and rebuilding it if you cannot determine
exactly what is the culprit or any way to clean it.

To answer your questions:

1.  No, I have not seen this in our nets.

2.  I answered this above.

3.  Probably not.  There is nothing law enforcement can do unless there is a
substantial loss.  You are ultimately responsible for what gets installed on
your machines regardless of the method of installation.  Now, if you find
someone using data that you can prove could only have been acquired by this
method, then you should discuss with your legal department about your
options and what you will need to do to provide proof of this infringment.


Cheers,

James Friesen, CIO
Lucretia Enterprises
Our World Is Here
info at lucretia dot ca
http://lucretia.ca


> -----Original Message-----
> From: listbounce () securityfocus com
> [mailto:listbounce () securityfocus com] On Behalf Of Goetz, Richard
> Sent: Tuesday, October 24, 2006 8:54 AM
> To: incidents () securityfocus com
> Subject: Malware/trojan attacks
>
> Over the last several months we have on more than one
> occasion uncovered a number of Trojans that appear to be
> seeking corporate information, sending that over a chat
> session to/through several European sites and downloading
> additional programs to the infected computer. Here's a short
> synopsis of the type of conversations one of our people
> uncovered on a laptop on the network:
>
>
> Contacts 203.121.73.136 on port TCP/17555.  IRC commands were
> sent to the workstation to run a command "staticftp"
> 70.84.109.84 to download a program x.exe. Instructed to
> launch 5 scans (netapi on port 137, wkssvc port 445, asn on
> port 445, dcom on port 135 and lsass on port 445). Connects
> to 66.36.243.116 on TCP/80 and starts a PHP-based
> conversation, giving the workstation credentials to the host
> and receiving the following information:
> CARGO:smtp_purple;
> MOD:smtp;
> PATH:http://niuqennaois.com/s2.5.exe;
> SERVER:209.160.64.216;
> REFRESH:2700;KEY:864a1bae77fc8053055d02550ed7b49c;
> Connects to 195.49.141.23 on TCP/3144, retrieving unreadable
> data Connects to 66.36.243.116 on TCP/80, exchanging
> credentials via PHP:
> To host:
> uuid <wsname>_547611528
> wv mag5_min0_build2195_Service_Pack_4
> cargo
> check purple
> To workstation:
> REFRESH:3600;
> KEY: 864a1bae77fc8053055d02550ed7b49c;
> HTTP connections are made to 66.45.232.66, 66.36.243.116 to
> perform similar PHP and download conversations.
> Three way TCP handshakes are attempted to 74.52.53.66,
> 68.142.212.41and 68.142.212.93 on TCP/80, but no further
> conversation was made.
>
>
>  My questions are:
>
> 1. Are other folks in the community seeing this kind of activity?
> 2. What, aside from deleting what you can find what other
> actions are recommended/required?
> Who, if anyone, in the community or law enforcement should be
> notified?
>
> If this post should be somewhere else, please let me know.
>
> Thanks,
>
> Richard Goetz
> IT Security Officer
> Kronos, Incorporated
> Phone: 978-947-2819
> Fax: 978-256-3919
> RGoetz () Kronos com
>
> Experts at Improving the Performance of People and Business
>  
>
>
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