BOOT_BACKBOOT.D

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Identify files detected as BOOT_BACKBOOT.D, then restore the Master Boot Record and delete malware/grayware files using Recovery Console

• On Windows Vista, 7, and Server 2008 systems:

1. Scan your computer with your Trend Micro product and take note of the name of the malware/grayware detected.
2. Insert your Windows Installation DVD in the DVD drive, then Press the restart button.
3. When prompted, press any key to boot from the DVD.
4. Depending on your Windows Installation DVD, you might be required to select the installation language. Then on the Install Windows window, choose your language, locale, and keyboard layout or input method. Click Next, then click Repair your computer.
5. Select Use recovery tools that can help fix problems starting Windows. Select your installation of Windows. Click Next.
6. If the Startup Repair window appears, click Cancel, Yes, then Finish.
7. In the System Recovery Options window, click Command Prompt.
8. In the Command Prompt window, type the following then press Enter:
   BootRec.exe /fixmbr
   DATA_GENERIC
   (Note: In Windows 7, all local drives will be assigned one more than normal. For example, the C: drive becomes D:.)
9. Type exit and press Enter to close the Command Prompt window.
10. Click Restart to restart the system normally.

• On Windows 8, 8.1, and Server 2012 systems:

1. Scan your computer with your Trend Micro product and then take note of the names of the malware/grayware files detected.
2. Insert your Windows Installation DVD in the DVD drive, then restart your computer.
3. When prompted, press any key to boot from the DVD.
4. Depending on your Windows Installation DVD, you might be required to select the keyboard layout. Then on the Windows Setup window, choose your language, locale, and input method. Click Next, then click Repair your computer.
5. Click Troubleshoot>Advanced Options>Command Prompt.
6. In the Command Prompt window, type the following then press Enter:
   BootRec.exe /fixmbr
   del "{malware/grayware path and file name}"
7. Type exit and press Enter to close the Command Prompt window.
8. Click Continue to restart the system normally.

Step 4

Scan your computer with your Trend Micro product to delete files detected as BOOT_BACKBOOT.D. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.