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trojan on avast


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3 replies to this topic

#1 wolfsaiga

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Posted 13 December 2008 - 07:50 PM

well i was scanning with malwarebytes and i found that the avast 4 home i dowloaded today had a virus on it, should i uninstall avast or what?

Malwarebytes' Anti-Malware 1.31
Database version: 1495
Windows 5.1.2600 Service Pack 2

12/13/2008 6:40:02 PM
mbam-log-2008-12-13 (18-40-01).txt

Scan type: Quick Scan
Objects scanned: 70153
Time elapsed: 16 minute(s), 20 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: 1

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:
C:\WINDOWS\Prefetch\AVAST.SETUP-22D37EDA.exe (Trojan.Agent) -> Quarantined and deleted successfully.

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#2 rigel

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Posted 13 December 2008 - 08:01 PM

A few questions...

When you downloaded Avast were you placing it on a new install? Did you get it from the Avast site? Did you run a scan with Avast and then run MBAM? There is a possibility that something attacked Avast as it was downloaded.

Please update and rerun Malwarebytes. Post a fresh log. Thanks!

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#3 wolfsaiga

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Posted 13 December 2008 - 08:06 PM

i don't get what the first question meant, yest i downloaded it from the avast site with the link from this site and i downloaded it from cnet that was linked from avast site. and no i didn't scan avast and mbam together i just scanned mbam everyday and that what happen and i already update it before i scanned. it is possible that avast as turn dark and threw trojans and stuff in there programs just to be sure i came here.

Edited by wolfsaiga, 13 December 2008 - 08:11 PM.


#4 rigel

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Posted 13 December 2008 - 08:24 PM

I highly doubt Avast has moved to the "Dark Side". The first question was meant to see if you were loading this on a new computer. Did you suspect a problem and downloaded Avast to check it out? Trojan Agent generally uses other avenues to attack computers. Please rerun malwarebytes to make sure it did indeed remove the problem. I would also follow this procedure to see if anything else is lurking
Please download ATF Cleaner by Atribune & save it to your desktop.
alternate download link DO NOT use yet.

Please download and install 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 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 and
    unzip into the program's folder.
    )
  • Under the "Configuration and Preferences", 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".

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".

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 a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith





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