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Published Dec 18, 2004 | Updated Sep 15, 2017

Worm:Win32/Mydoom.R@mm

Detected by Microsoft Defender Antivirus

Aliases: W32.Mydoom.P@mm (Symantec) W32/Mydoom.r@MM (McAfee) WORM_MYDOOM.R (Trend Micro) Win32/MyDoom.R.Worm (CA)

Summary

Win32/Mydoom.R@mm is a mass-mailing worm that sends itself to e-mail addresses it finds on the infected computer.
To manually recover from infection by Win32/Mydoom.R@mm, perform the following steps:
  • Disconnect from the Internet.
  • End the worm process.
  • Delete the worm files from your computer.
  • Take steps to prevent re-infection.

Disconnect from the Internet

To help ensure that your computer is not actively infecting other computers, you should disconnect it from the Internet before proceeding. Print this Web page or save a copy on your computer; then unplug your network cable and disable your wireless connection. You can reconnect to the Internet after completing these steps.

End the worm process

Next you should end the worm process. This will stop your computer from infecting other computers.
To end the worm process
  1. Press CTRL+ALT+DEL once and click Task Manager.
  2. Click Processes and click Image Name to sort the running processes by name.
  3. Select the worm process taskmon.exe, and click End Process. 

Delete the worm files from your computer

To delete the worm files from your computer
  1. Click Start, and then click Run.
  2. In the Open field, type %windir%\system32
  3. Click OK.
  4. Click Name to sort files by name.
  5. If taskmon.exe is in the list, delete it.
  6. On the Desktop, right-click the Recycle Bin and click Empty Recycle Bin.
  7. Click Yes.
If deleting taskmon.exe fails, use the following steps to verify that taskmon.exe is not running:
  1. Press CTRL+ALT+DEL once and click Task Manager.
  2. Click Processes and click Image Name to sort the running processes by name.
  3. Confirm that taskmon.exe is not in the list.

Take steps to prevent re-infection

Do not reconnect your computer to the Internet until the computer is protected from re-infection. See the "Preventing Infection" section for more information.
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