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 Post subject: windows IRC bots
PostPosted: Fri Feb 08, 2008 1:53 pm 
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Joined: Tue Apr 13, 2004 6:51 pm
Posts: 890
Location: Groton, MA
this is WAY off topic, but you folks are my favorite techies.

I just switched my home network to OpenDNS for reliability and better domain filtering.

After 3 days I went to the Stats page which lists all DNS requests from my (ISP provided) IP. It is not granular enough to drive to to my NAT obscured boxes.

After 3 days I see this crap:
Code:
Host                   #of DNS requests
montreal.qc.ca.undernet.org     1,098   
mesa.az.us.undernet.org          1,092   
helsinki.fi.eu.undernet.org        1,091   
calgary.ab.ca.undernet.org       1,090   
diemen.nl.eu.undernet.org        1,090   
oslo2.no.eu.undernet.org          1,090   
status:                                    1,090   
zagreb.hr.eu.undernet.org        1,089   
amsterdam2.nl.eu.undernet.org 1,088   
sterling.va.us.undernet.org       1,088   
london.uk.eu.undernet.org        1,087   
oslo1.no.eu.undernet.org          1,087   
london2.uk.eu.undernet.org       1,084   


A little research indicates that undernet is a IRC server organization. As no one is intentionally running IRC, I am suspecting IRC-Bots. reasonable?

I have several XP and several knoppmyth based boxes. I think I'm gonna use wireshark to see which boxes are generating the DNS activity and proceed from there.

I have use OpenDNS to block the undernet.org domain....so the little bastards can't 'Phone Home'

Anyone have any experience / advice for cleaning this stuff up.

Thanks

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PostPosted: Fri Feb 08, 2008 3:17 pm 
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Joined: Sat Sep 02, 2006 9:17 am
Posts: 359
Try one of the spyware/adware remover tools. I'd give it about an 80% shot.

The best way, and most painful way, is to simply nuke the partition and re-install.


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 Post subject:
PostPosted: Fri Feb 08, 2008 4:10 pm 
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Joined: Thu Feb 12, 2004 2:54 pm
Posts: 392
Location: Beaumont, CA
I used OpenDNS for a couple of weeks and found that some sites would not come up. I have no idea why, but after running into that a couple times I went back to my ISP DNS. :(

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 Post subject:
PostPosted: Sat Feb 09, 2008 8:13 am 
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Joined: Tue Apr 13, 2004 6:51 pm
Posts: 890
Location: Groton, MA
after domain blocking undernet.org for 24 hours, all of these dns requests stopped.

So the bots gave up...for now. they can't be controlled from the net.....but they lurk.

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