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Creating beast signature

I would like to create a custom signature to identify this backdoor. I am using CISCO k9-4235's and am at the latest on all apps S63............

Beast2.05

from -SANS-

http://isc.sans.org/diary.html?date=2003-12-15

The default listen port is 6666 and the port for its outbound connections is 9999. The 'server' calls itself svchost.exe. It can be remotely controlled either in a listening mode or in a "reverse mode". In the reverse mode once installed it connects to a server. Many firewalls allow connections from the inside of the network outbound in such a network "The Beast" can by pass the firewall by opening the outbound connection to its server.

Any help would be appreciated!

Gary Price

2 REPLIES
Community Member

Re: Creating beast signature

You can use the 9xxx and 92xx series signatures as a template for your custom signature. I would write on of each for port 6666 and 9999.

-Tony

Community Member

Re: Creating beast signature

Interesting traffic. I didn't find any for the beast(TCP6666->TCP9999). But i have seen tons of traffic to and from a CounterStrike server in Germany. Seems it initiates a client session using port 9999......Sig is working great.....

gp

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