The
SoBig.F worm spreads through email attachments and shared network
folders. It sends copies of itself via is own SMTP engine and obtains
the recipient addresses from information found in files with the
following extensions:
|
The details of the email are
Subject:
<any of the following:>
Re: Thank you!
Thank you!
Re: Details
Re: Re: My details
Re: Approved
Re: Your application
Re: Wicked screensaver
Re: That movie
When constructing the email, the worm spoofs the From field using an email address that it has obtained from the system or it uses admin@internet.com as the From address.
The message body contains:
- See the attached file for details
- Please see the attached file for details.
The attachment is one of the following
- your_document.pif
- document_all.pif
- thank_you.pif
- your_details.pif
- details.pif
- document_9446.pif
- application.pif
- wicked_scr.scr
- movie0045.pif
The worm stops spreading via network shares on September 10, 2003.
Go to the following link for more information about what SoBig.F will do:
Symantec SoBig.F Virus Information
How to Clean/Delete the SoBig.F worm?
Follow these steps in removing the SoBig.F worm.
1) Disconnect from the Internet or any network you are connected to, you may also want to disable System Restore on Windows XP or Windows ME before continuing
2) Terminate the running program
- Open the Windows Task Manager by either pressing CTRL+ALT+DEL on Win9x machines or CTL+Shift+Tab and clicking on the Processes tab on WinNT/2000/XP machines.
- Locate the following program, click on it and End Task or End Process
Winppr32.exe
- Close Task Manager
2) Remove the Registry entries
- Click on Start, Run, Regedit
- In the left panel go to
HKEY_LOCAL_MACHINE>Software>Microsoft>Windows>Current Version>Run
- In the right panel, right-click and delete the following entry
TrayX which shows the line
"TrayX"="%Windir%\winppr32.exe /sinc"
Repeat this procedure for the following Registry key as well
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- Close the Registry Editor
3) Delete the infected files
- Click Start, point to Find or Search, and then click Files or Folders.
- Make sure that "Look in" is set to (C:) and that "Include subfolders" is checked.
- In the
"Named" or "Search for..." box, type, or copy and paste, the file names:
Winstt32.dat
winppr32.exe - Click Find Now or Search Now.
- Delete the displayed files.
4) Reboot the computer and run a thorough virus scan using your favorite antivirus program.
For Automatic Removal of the SoBig.F worm, download the removal tool from Symantec
Removal of Other SoBig worm viruses
SoBig.A
SoBig.B
SoBig.C
SoBig.D
SoBig.E
SoBig.F
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