1. Symantec/
  2. Security Response/
  3. W95.HybrisF Fix Tool

W95.HybrisF Fix Tool

December 21, 2000
August 24, 2005 12:00:00 AM
Removal Information
The W95.HybrisF Fix tool will repair the infection caused by W95.HybrisF. To use it, download and extract the tool, and then run it at a DOS prompt.

NOTE: This removal tool only works to remove the specific plugin named W95.Hybrisf. It will not clean up a system infected by the W95.Hybris.plugin, W95.Hybris.gen or W95.Hybris.worm

To download and extract the tool:

NOTE: This file is in .zip format. You will need to use a zip program such as PKZip or WinZip to extract the tool before you can use it.

Download fixhybf.zip to a folder on your hard drive.
Unzip the downloaded file to a location on the hard drive. For ease of use, we recommend the root of drive C.

To run the tool:
To use the tool, the computer must restarted in MS-DOS mode. It does not work correctly in a DOS window in Windows.
Restart the computer to a command prompt:
Windows 95
Click Start and click Shut Down. The Shut Down Windows dialog box appears.
Click Restart, and then click Yes. Windows will shut down, and the computer will restart.
When "Starting Windows 95..." appears on the screen, press F8. The Windows 95 Startup Menu appears.
Select "Command Prompt only," and press Enter.
Windows 98 to a command prompt:
Click Start, and click Shut Down. The Shut Down Windows dialog box appears.
Click Restart, and then click OK. Windows will shut down, and the computer will restart.
As the computer restarts, press and hold down the Ctrl key until the Windows 98 Startup Menu appears.

NOTE: On some computers, a keyboard error or other error may appear during restart as you hold down the Ctrl key. If so, follow the prompts to press a key to continue (for example, the message may prompt you to press the Esc key); then immediately press the Ctrl key again.

Select "Command Prompt only," and press Enter.
Change to the directory in which you unzipped Fixhybf.zip. If you unzipped it to the root of drive C, skip to the next step.
Type the following, and then press Enter:

fixhybf [PATH]

(where [PATH] represents the drive or directory to be scanned).

As an alternative to specifying a path, to scan all drives except for floppies (recommended), type:

fixhybf /a

The scan will take approximately 5 to 10 minutes, depending on the size of the hard disk.
After the scan is completed, some statistics will be displayed. These may vary, but will be in the following format:

Scanned: XX, infected: XX, repaired: XX

In most cases, all infected files will be repaired.


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