Thread: Zombie Computer
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Old 12-23-2007, 12:28 PM   #7 (permalink)
forhockey
Analyst, Security Team
 
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Join Date: Sep 2006
Location: Ontario, Canada
Posts: 2,948
OS: Windows 7 Ultimate


Re: Zombie Computer

Hi saurkraut,

Your computer appears to be infected by a backdoor trojan. Its very possible that anything could have been installed on your computer by the remote attacker, including opening other backdoors and installing other rootkits. While we can attempt to clean what we see in your logs, we can't guarantee that your computer will be completely in the clear since we have no way of knowing what has been done to the computer.

1. If this computer has been used for sensitive transactions, then you should immediately change your online banking passwords and contact your bank.

2. From a clean computer, change *all* your online passwords -- for email, for banks, financial accounts, PayPal, eBay, online companies, any online forums or groups you belong to.

Do NOT change passwords or do any transactions while using the infected computer because the attacker will get the new passords and transaction information.

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Download SDFix and save it to your Desktop.

Double click SDFix.exe and it will extract the files to C:\SDFix

DO NOT run SDFix yet. We will shortly

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Enter Safe Mode
  1. Restart your computer
  2. After hearing your computer beep once during startup, but before the Windows icon appears, press F8
  3. Instead of Windows loading as normal, a menu should appear
  4. Use the up arrow key to highlight Safe Mode and press Enter.
  5. Login with your usual account
  6. Once you have logged in, a warning message will appear regarding starting windows in Safe mode, click OK and windows will load your desktop environment

Note: Some systems, this may be the F5 key, so try that if F8 doesn't work.

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Run SDFix
  • Open the extracted SDFix folder and double click RunThis.cmd to start the script.
  • Type Y to begin the cleanup process.
  • It will remove any Trojan Services and Registry Entries that it finds then prompt you to press any key to Reboot.
  • Press any Key and it will restart the PC.
  • When the PC restarts the Fixtool will run again and complete the removal process then display Finished, press any key to end the script and load your desktop icons.
  • Once the desktop icons load the SDFix report will open on screen and also save into the SDFix folder as Report.txt
  • Paste the contents of the Report.txt back on the forum

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Restart your computer in Normal Mode

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  1. Download Combofix from Here or Alternate link
  2. Disable your real time Anti Virus and Anti Spyware protection programs. Exit the program via the SystemTray icon.
  3. Double click on combofix.exe & follow the prompts. Type "1" and press Enter to begin the scan.
  4. When finished, it shall produce a log for you ( C:\ComboFix.txt ). Post that log in your next reply.

    Note:
    Do not mouseclick combofix's window whilst it's running. That may cause it to stall


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  5. Re-enable your Anti-Virus if it is not active...a reboot should have re-activated it.
  6. You are using an outdated version of HijackThis. Please delete your current version and download HijackThis. Double-click on the file you just downloaded. Click on the "Install" button. It will by default install to the directory - C:\Program Files\Trend Micro\HijackThis
  7. Open HijackThis and click on 'Do a System Scan and save a Logfile'. Save the log file and post it here.

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Please include the following in your next reply:

C:\SDFix\report.txt
C:\ComboFix.txt
New HiJackThis Log
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