E6FB5E20-DE35-11CF-9C87-00AA005127ED what is this? It is found in
Mydoom and Netsky viruses.

E6FB5E20-DE35-11CF-9C87-00AA005127ED is a location string where these
two virii choose to hide in the system registry of Windows.

The full locations of the settings it hides in registry actually appear here:
HKEY_CURRENT_USER\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}\InprocServer32
HKEY_CLASSES_ROOT\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}\InprocServer32

These are two of but many places in the system registry which are
created and used for the virus. It just makes it a bit harder for
antivirus programs to find and completely elminate if it disperses
itself throughout your registry, startup files, as well as infecting
various executables, not to mention its worm-like effects through
email, etc. For more information on how else the virus works, please
see the following page below:

http://www.f-secure.com/v-descs/mydoom_b.shtml

Thank you for your question,

skermit-ga