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possiblr trojan downloader?


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3 replies to this topic

#1 subguy

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Posted 02 March 2011 - 10:09 PM

I am running windows XP SP3 and recently restarted my computer, a blue screen flashed rather quickly so I could not read what it said completely. it said something about a physical dump, when the computer started running correctly another screen came up that said the dump could have been because of corrupted software or a trojan. I ran Super Anti spyware and got a couple of hits. My firewall also flashed a screen saying a possible Trojan downloader, C:\windows\system32\412DF34b.exe I am attaching a copy of the SAS report as well.

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

Generated 03/02/2011 at 03:46 PM

Application Version : 4.49.1000

Core Rules Database Version : 6517
Trace Rules Database Version: 4329

Scan type : Complete Scan
Total Scan Time : 01:13:49

Memory items scanned : 469
Memory threats detected : 0
Registry items scanned : 6579
Registry threats detected : 0
File items scanned : 24321
File threats detected : 6

Trojan.Agent/Gen-Nullo[Short]
C:\AVENGER\GAMEVANCELIB32.DLL
C:\SYSTEM VOLUME INFORMATION\_RESTORE{5B686006-38BC-4D60-BDB1-AFED744EDC32}\RP121\A0005115.DLL
C:\SYSTEM VOLUME INFORMATION\_RESTORE{5B686006-38BC-4D60-BDB1-AFED744EDC32}\RP121\A0005116.DLL
C:\SYSTEM VOLUME INFORMATION\_RESTORE{5B686006-38BC-4D60-BDB1-AFED744EDC32}\RP121\A0005117.EXE
C:\SYSTEM VOLUME INFORMATION\_RESTORE{5B686006-38BC-4D60-BDB1-AFED744EDC32}\RP121\A0005118.EXE

Adware.Tracking Cookie
objects.tremormedia.com [ C:\Documents and Settings\Mike\Application Data\Macromedia\Flash Player\#SharedObjects\8AR236NZ ]

Any help will be appreciated

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#2 boopme

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Posted 02 March 2011 - 10:23 PM

Hello, let's run these 2 next and then we'll remove the leftovers in the SAS scan,
Are you having any popups or redirects??


Next run MBAM (MalwareBytes):

Please download Malwarebytes Anti-Malware and save it to your desktop.
Download Link 1
Download Link 2MBAM 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.
    For instructions with screenshots, please refer to the How to use Malwarebytes' Anti-Malware Guide.
  • 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.

Troubleshoot Malwarebytes' Anti-Malware


Now an online scan
Please perform a scan with Eset Online Antiivirus Scanner.
This scan requires Internet Explorer,Opera or Firefox to work. Vista/Windows 7 users need to run Internet Explorer as Administrator.
To do this, right-click on the IE icon in the Start Menu or Quick Launch Bar on the Taskbar and select Run As Administrator from the context menu.
  • Click the green Posted Image button.
  • Read the End User License Agreement and check the box:
  • Check Posted Image.
  • Click the Posted Image button.
  • Accept any security warnings from your browser.
  • Check Posted Image
  • Check Remove found threats and Scan potentially unwanted applications. (If given the option, choose "Quarantine" instead of delete.)
  • Click the Start button.
  • ESET will then download updates for itself, install itself, and begin scanning your computer.
  • If offered the option to get information or buy software at any point, just close the window.
  • The scan will take a while so be patient and do NOT use the computer while the scan is running. Keep all other programs and windows closed.
  • When the scan completes, push Posted Image
  • Push Posted Image, and save the file to your desktop as ESETScan.txt.
  • Push the Posted Image button, then Finish.
  • Copy and paste the contents of ESETScan.txt in your next reply.
Note: A log.txt file will also be created and automatically saved in the C:\Program Files\EsetOnlineScanner\ folder.
If you did not save the ESETScan log, click Posted Image > Run..., then type or copy and paste everything in the code box below into the Open dialogue box:

C:\Program Files\ESET\EsetOnlineScanner\log.txt
  • Click Ok and the scan results will open in Notepad.
  • Copy and paste the contents of log.txt in your next reply.
-- Some online scanners will detect existing anti-virus software and refuse to cooperate. You may have to disable the real-time protection components of your existing anti-virus and try running the scan again. If you do this, remember to turn them back on after you are finished.

NOTE: In some instances if no malware is found there will be no log produced.

Edited by boopme, 02 March 2011 - 10:24 PM.

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#3 subguy

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Posted 03 March 2011 - 08:07 PM

Thank you for the quick reply Boopme. I am not expeirencing any popup's or redirects. The result from the ESET scan is as follows.



C:\Documents and Settings\Mike\My Documents\Downloads\SetupGamevance (2).exe a variant of Win32/Adware.Gamevance.AP application cleaned by deleting - quarantined
C:\Documents and Settings\Mike\My Documents\Downloads\SetupGamevance.exe a variant of Win32/Adware.Gamevance.AP application cleaned by deleting - quarantined
C:\Documents and Settings\Mike\My Documents\Downloads\WindowsClear.exe a variant of Win32/Adware.PerfectOptimizer application deleted - quarantined


The MBAM scan is below.
Malwarebytes' Anti-Malware 1.50.1.1100
www.malwarebytes.org

Database version: 5947

Windows 5.1.2600 Service Pack 3
Internet Explorer 7.0.5730.11

3/3/2011 2:57:08 PM
mbam-log-2011-03-03 (14-57-08).txt

Scan type: Full scan (C:\|)
Objects scanned: 230901
Time elapsed: 41 minute(s), 49 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: 1
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:
c:\documents and settings\Mike\application data\Mozilla\extensions\{ec8030f7-c20a-464f-9b0e-13a3a9e97384}\textlinks@gamevance.com (Adware.GamesVance) -> Quarantined and deleted successfully.

Files Infected:
(No malicious items detected)


Again thanks for your time.

#4 boopme

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Posted 03 March 2011 - 08:27 PM

Looks like we are good to go here !!
Now you should Create a New Restore Point to prevent possible reinfection from an old one. Some of the malware you picked up could have been saved in System Restore. Since this is a protected directory your tools cannot access to delete these files, they sometimes can reinfect your system if you accidentally use an old restore point. Setting a new restore point AFTER cleaning your system will help prevent this and enable your computer to "roll-back" to a clean working state.

The easiest and safest way to do this is:
  • Go to Start > Programs > Accessories > System Tools and click "System Restore".
  • Choose the radio button marked "Create a Restore Point" on the first screen then click "Next". Give the R.P. a name, then click "Create". The new point will be stamped with the current date and time. Keep a log of this so you can find it easily should you need to use System Restore.
  • Then use Disk Cleanup to remove all but the most recently created Restore Point.
  • Go to Start > Run and type: Cleanmgr
  • Click "Ok". Disk Cleanup will scan your files for several minutes, then open.
  • Click the "More Options" tab, then click the "Clean up" button under System Restore.
  • Click Ok. You will be prompted with "Are you sure you want to delete all but the most recent restore point?"
  • Click Yes, then click Ok.
  • Click Yes again when prompted with "Are you sure you want to perform these actions?"
  • Disk Cleanup will remove the files and close automatically.
Vista Users can refer to these links: Create a New Restore Point and Disk Cleanup.

Tips to protect yourself against malware and reduce the potential for re-infection:Avoid gaming sites, pirated software, cracking tools, keygens, and peer-to-peer (P2P) file sharing programs. They are a security risk which can make your computer susceptible to a smörgåsbord of malware infections, remote attacks, exposure of personal information, and identity theft. Many malicious worms and Trojans spread across P2P file sharing networks, gaming and underground sites. Users visiting such pages may see innocuous-looking banner ads containing code which can trigger pop-up ads and malicious Flash ads that install viruses, Trojans and spyware. Ads are a target for hackers because they offer a stealthy way to distribute malware to a wide range of Internet users. The best way to reduce the risk of infection is to avoid these types of web sites and not use any P2P applications. Read P2P Software User Advisories and Risks of File-Sharing Technology.

Keeping Autorun enabled on USB and other removable drives has become a significant security risk due to the increasing number of malware variants that can infect them and transfer the infection to your computer. To learn more about this risk, please read:
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook




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