BleepingComputer.com: Trojan and Harmful Certificates

I removed a trojan earlier today and I think I got the trojan from using a proxy server. The proxy that I usually use is kproxy and has been safe in the past. I think i accepted a trusted certificate that I should not have and now I am have many issues. I can't access hotmail form firefox and I can't remove the certificates. I am running windows XP Pro with sevrice pack 3.

Any help will be appreciated

This post has been edited by hamluis: 18 January 2011 - 12:00 PM
Reason for edit: Moved from XP to Am I Infected forum.

Hello,lets see what MBAM shows.

Next run MBAM (MalwareBytes):

Please download Malwarebytes Anti-Malware and save it to your desktop.

Download Link 1
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.
  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

Here is my MBAM log file. It did remove one file that need me to reboot.

Malwarebytes' Anti-Malware 1.50.1.1100
www.malwarebytes.org

Database version: 5553

Windows 5.1.2600 Service Pack 3
Internet Explorer 6.0.2900.5512

1/19/2011 8:27:14 AM
mbam-log-2011-01-19 (08-27-14).txt

Scan type: Quick scan
Objects scanned: 177041
Time elapsed: 5 minute(s), 54 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 1
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:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\StartMenuLogoff (PUM.Hijack.StartMenu) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)

Hello. I want to run one more scan to see if this left any malware.

The crtifate we will probably need to take up in the XP forum as this is a tricky operation. I believe it best you should not delete CA certificates, but rather disable them. The main take away is that there is a big difference between the statements “I don’t know you” (if you remove the certificate) and “I know you and I don’t trust you” (disabling the certificate). Some browsers also handle these errors differently.



Please perform a scan with Eset Online Antiivirus Scanner.
This scan requires Internet Explorer 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 button.
  
• Read the End User License Agreement and check the box:
  
• Check .
  
• Click the button.
  
• Accept any security warnings from your browser.
  
• Check
  
• 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
  
• Push , and save the file to your desktop as ESETScan.txt.
  
• Push the 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 > 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.

I ran the ESET scan. It returned no results. I tried to save a log but it did not give me the option. I also tried the code you posted below and it said it could not find the program ESET. It seems that the program uninstalled after running, although I never checked this option.

Hello, In some instances if no malware is found there will be no log produced. And yes it uninstalls itself.
o the only issue left is that certificate. I think that is an item to ask in the XP forum as it is difficult to remove. If they cannot,we can try the Malware Removal section.