Re: NetSky.q Virus. Looking for more detailed information on how the DOS will be performed.

[Joe Stewart <jstewart () lurhq com>]

On Tuesday 30 March 2004 1:18 pm, Paul wrote:
> I am looking for more detailed information on exactly how the dDOS
> attack will be performed, ports used, request type, packet size, etc.
> In hopes of getting enough information to work with our providers for
> an adequate defense.

Paul,
If the virus is started on one of the mentioned dates and the host is 
connected to the Internet, the following steps will be taken by the 
virus:

1) The hostnames of the sites to attack are decrypted and the IP 
addresses resolved.

2) 80 threads are created for the attack - each thread picks from one of 
the five victim hostnames at random. The following steps are performed 
in each thread:

3) A connection is made on port 80 and only the following content is 
sent (formatted for your site here and CR/LF escaped):

GET / HTTP/1.1\r\nHost: www.edonkey2000.com\r\n\r\n

4) The thread sleeps for 250 milliseconds.

5) The process repeats from step 3 until the virus exits.

-Joe

-- 
Joe Stewart, GCIH 
Senior Security Researcher
LURHQ http://www.lurhq.com/