The SoBig
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
Sender: big@boss.com
The subject can be:
- Re: Movies
- Re: Sample
- Re: Document
- Re: Here is that sample
And the attachment is one of the following
- Movie_0074.mpeg.pif
- Document003.pif
- Untitled1.pif
- Sample.pif
Before
SoBig sends the messages, it sends a message to an address at
pagers.icq.com.
The worm also attempts to copy itself to the following folders on all
the open network shares:
- \Windows\All Users\Start Menu\Programs\StartUp
- Documents and Settings\All Users\Start Menu\Programs\Startup
How to Clean/Delete the SoBig Worm?
Follow these steps in removing the SoBig Worm.
1) 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
WINMGM32
- 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
WindowsMGM
- 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:
- dwn.dat
sntmls.dat
winmgm32.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.
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