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Attempted intrusions through UDP ports


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#1 vinniec

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Posted 14 June 2009 - 08:22 AM

Since yesterday afternoon I have received over 100 notifications from ZoneAlarm that some IP's are trying to connect to my UDP ports (54766 and 40116), coinciding with my installation of BitTorrent. I have since uninstalled BitTorrent and have also updated and run Avast!, Spybot, and AdAware. I started to download a file from BitTorrent before this intrusion activity happened so maybe it is happening due to that file, but none of the virus/spyware programs that I ran found anything.

Am I still at risk, despite ZoneAlarm blocking the incoming attempts?

Is there any way for me to find the root cause of these intrusions?

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#2 Blade

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Posted 14 June 2009 - 11:03 AM

The root cause of these attempted intrusions were most likely BitTorrent itself.

Peer to Peer programmes allow for the sharing of files between users as the name suggests. In today's world the cyber crime has come to an enormous dimension and any means is used to infect personal computers to make use of their stored data or machine power for further propagation of the malware files. A popular means is the use of file-sharing tools as a tremendous amount of prospective victims can be reached through it.

It is therefore possible to be infected by downloading manipulated files via peer-to-peer tools and thus suggested to be used with intense care. Some further readings on this subject, along the included links, are as follows: "File-Sharing, otherwise known as Peer To Peer" and "Risks of File-Sharing Technology."

It is also important to note that sharing entertainment files and proprietary software infringes the copyright laws in many countries over the world and you are putting yourself at risk of being indicted through organisations watching over the rights of the authors of such files (i.e. the RIAA for music files, or the MPAA for movie files in the USA) or the authors of the files themselves.

Naturally there are also legal ways to use these services, such as downloading Linux distributions or office suites such as "Open Office."



It is possible that the file you began to download was in fact infected, so let's check your system just to be safe.


Please download ATF Cleaner by Atribune & save it to your desktop.
  • Double-click ATF-Cleaner.exe to run the program.
  • Under Main "Select Files to Delete" choose: Select All.
  • Click the Empty Selected button.
  • If you use Firefox browser click Firefox at the top and choose: Select All
  • Click the Empty Selected button.
    If you would like to keep your saved passwords, please click No at the prompt.
  • If you use Opera browser click Opera at the top and choose: Select All
  • Click the Empty Selected button.
    If you would like to keep your saved passwords, please click No at the prompt.
  • Click Exit on the Main menu to close the program.
Note: On Vista, "Windows Temp" is disabled. To empty "Windows Temp" ATF-Cleaner must be "Run as an Administrator".

Please download and scan with SUPERAntiSpyware Free
  • Double-click SUPERAntiSypware.exe and use the default settings for installation.
  • An icon will be created on your desktop. Double-click that icon to launch the program.
  • If it will not start, go to Start > All Prgrams > SUPERAntiSpyware and click on Alternate Start.
  • If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here. Double-click on the hyperlink for Download Installer and save SASDEFINITIONS.EXE to your desktop. Then double-click on SASDEFINITIONS.EXE to install the definitions.)
  • In the Main Menu, click the Preferences... button.
  • Click the "General and Startup" tab, and under Start-up Options, make sure "Start SUPERAntiSpyware when Windows starts" box is unchecked.
  • Click the "Scanning Control" tab, and under Scanner Options, make sure the following are checked (leave all others unchecked):
    • Close browsers before scanning.
    • Scan for tracking cookies.
    • Terminate memory threats before quarantining.
  • Click the "Close" button to leave the control center screen and exit the program.
  • Do not run a scan just yet.
Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

***************************************************

Scan with SUPERAntiSpyware as follows:
  • Launch the program and back on the main screen, under "Scan for Harmful Software" click Scan your computer.
  • On the left, make sure you check C:\Fixed Drive.
  • On the right, under "Complete Scan", choose Perform Complete Scan and click "Next".
  • After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
  • Make sure everything has a checkmark next to it and click "Next".
  • A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
  • If asked if you want to reboot, click "Yes" and reboot normally.
  • To retrieve the removal information after reboot, launch SUPERAntispyware again.
    • Click Preferences, then click the Statistics/Logs tab.
    • Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
    • If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
    • Please copy and paste the Scan Log results in your next reply.
  • Click Close to exit the program.
In your next reply, please include the following:
SUPERAntiSpyware log

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#3 vinniec

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Posted 14 June 2009 - 02:13 PM

Nothing reported, but I'm still receiving connection attempts through UDP

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 06/14/2009 at 03:03 PM

Application Version : 4.26.1004

Core Rules Database Version : 3938
Trace Rules Database Version: 1881

Scan type : Complete Scan
Total Scan Time : 00:40:56

Memory items scanned : 445
Memory threats detected : 0
Registry items scanned : 4400
Registry threats detected : 0
File items scanned : 47956
File threats detected : 0

#4 Blade

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Posted 14 June 2009 - 03:27 PM

Hello vinniec

As I expected, SAS doesn't indicate anything malicious. We can try one other scanner just in case something's there that SAS didn't catch, but it's likely that this is not malware related. I'll ask around and see if someone with better understanding of torrent systems than I can explain this.

Let's go ahead and run the other scanner just to be sure (It doesn't take long to run :thumbsup: )

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2

MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself. Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the definition updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.

In your next reply, please include the following:
Malwarebytes log

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#5 vinniec

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Posted 14 June 2009 - 04:27 PM

Same results...

Malwarebytes' Anti-Malware 1.37
Database version: 2279
Windows 5.1.2600 Service Pack 3

6/14/2009 5:23:59 PM
mbam-log-2009-06-14 (17-23-59).txt

Scan type: Quick Scan
Objects scanned: 112465
Time elapsed: 2 minute(s), 3 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)

#6 Blade

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Posted 14 June 2009 - 05:40 PM

Hi vinniec

Have you restarted the computer since uninstalling BitTorrent?

~Blade

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#7 vinniec

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Posted 14 June 2009 - 05:57 PM

yes. I have restarted multiple times.

As an additional note, most of the intrusions that have been attempted today are coming from "192.168.1.1", all from unique ports ranging from 58 to 1784. Even though I understand 192.168... to be inherently internal, I still find these intrusions weird since they only started happening yesterday.

#8 boopme

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Posted 14 June 2009 - 08:12 PM

This may be just be,how can I say it, trailers. the other sites that are still looking for this machine to run the torrent. In other words you are still gettting hits till they forget about you. see if it still exists in a day or so.
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#9 Blade

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Posted 14 June 2009 - 09:39 PM

You beat me to it boopme. . .

Billy O'Neal (one of the training coaches here at BC) had this to say on the subject...

The issue is that several other machines will still try that machine because they will still think it is running the torrent. It can take some time for this to stop. Torrenting systems register with a "tracker" which contains a list of all machines running the torrent. If a host goes offline, the tracker is free to keep this information, and is also free to see if the host is alive.

Billy3




He also suggested I provide you with the following link.

http://en.wikipedia.org/wiki/BitTorrent_%2...ck_of_anonymity


Hope that helps

~Blade

Edited by Blade Zephon, 14 June 2009 - 09:40 PM.

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#10 vinniec

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Posted 16 June 2009 - 08:44 PM

Thanks a lot, all! You've really cleared this up for me on why I was receiving so many outside requests.

However, I'm still receiving firewall warning from an internal source which was not the case until I installed BitTorrent. Is it possible that BitTorrent created a vulnerability by opening up ports which were previously closed?

#11 Blade

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Posted 16 June 2009 - 11:56 PM

So ZA is giving outbound connection alerts? If this is the case, try looking through your Add/Remove Programs list for a program called DNA. If you find it, uninstall it. This program is often bundled with BitTorrent and is really not something you should have on your PC; it can compromise your system security in the same ways that BitTorrent can.

All the scans came back clean, so unless these outbound connections began after we ran those scans, it's probably not malware related. If they have begun since we scanned, we'll need to run all those scans again to eliminate the possibility of malware.

Edited by Blade Zephon, 16 June 2009 - 11:58 PM.

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