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utorrent seems to be vulnerable to DOS attacks


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#1 gmeruser123

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Posted 04 March 2014 - 09:31 PM

OS: Windows 7 SP1

Whenever utorrent is running there are hundreds of non-stop DNS lookups, I don't remember this ever occurring before. Is this normal? It seems extremely excessive and it looks like I could get banned from using certain nameservers.

Perhaps this is a DNS DDOS/Amplification Attack

https://www.watchguard.com/infocenter/editorial/41649.asp

There is a registry entry under:

HKEY_CURRENT_USER\Software\Classes\FalconBetaAccount

with a string:

Name: remote_access_client_id
Data: (some digits)

This might be unrelated but there is also a registry entry with random characters:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved\{CA3FB357-B7E4-EA79-4B23-7D57B85C3182}

with a dword:

Name: (random characters)
Value: (more random characters with the last few characters being seemingly legible "leakon" i.e. asdfasdfjafjljsdgfhjflsdkeiswleakon)

When I close utorrent down the system "seems" to return to normal. But I have this feeling my PC has been infiltrated every time I use it. Regardless of what this site says:

http://lifehacker.com/5545837/utorrent-falcon-remote-controls-your-bittorrent-downloads-from-any-browser

The falcon beta account entry in the registry feels like a backdoor. I have never enabled this feature.

Avira, Avast, dds, gmer, ZHPDiag, AdwCleaner and just about everything else doesn't detect anything perhaps because the software itself is vulnerable and not necessarily an infection.

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#2 boopme

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Posted 05 March 2014 - 08:16 PM

We need to get a deeper look. Please follow this Preparation Guide, do steps 6,7 and 8 and post in a new topic.
Let me know if all went well.
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#3 quietman7

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Posted 05 March 2014 - 10:34 PM


Your log(s) is posted here.

Now that your log is posted, you should NOT make further changes to your computer (install/uninstall programs, use special fix tools, delete files, edit the registry, etc) unless advised by a Malware Response Team member...nor should you continue to ask for help elsewhere. Doing so can result in system changes which may not show in the log(s) you already posted. Further, any modifications you make on your own may cause confusion for the member assisting you and could complicate the malware removal process or make things worst which would extend the time it takes to clean your computer.

From this point on the Malware Response Team should be the only members that you take advice from, until they have verified your log as clean.

Please be patient. It may take several days to get a response because the Malware Response Team members are very busy working logs posted before yours. They are volunteers who will help you out as soon as possible. Once you have posted your log and are waiting, please DO NOT "bump" your post or make another reply until it has been responded to by a member of the Malware Response Team. Generally the staff checks the forum for postings that have 0 replies as this makes it easier for them to identify those who have not been helped. If you post another response there will be 1 reply. A team member, looking for a new log to work may assume another Malware Response Team member is already assisting you and not open the thread to respond.

If HelpBot replies to your topic, please follow Step One and CLICK the link so it will report your topic to the team members.

To avoid confusion, I am closing this topic.

Good luck with your log.
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