This boot sector virus is known to be in the wild in the Netherlands.
WET is only able to infect a hard disk when you try to boot
the machine from an infected diskette. At this time WET infects
the DOS boot sector on hard drive, and after that it will go resident
to high DOS memory during every boot-up from the hard disk. When
WET infects floppies, it does not save the original boot sector anywhere.
Most other boot sector viruses infect the MBR on hard drives,
not the DOS boot sector.
Once WET gets resident to memory, it will infect practicly all
non-writeprotected diskettes used in the machine. WET uses
stealth mechanisms to conceal it's presence.
The following text string can be seen in infected boot sectors:
(c) 1990 W.E.T.
The virus is suspected to have been written signifantly later
than the copyright statement implies.
WET also ovewrites the file system type in the boot sector
with its own code. The side effect from this is that the
DOS sys command can NOT be used to overwrite the boot sector
on the hard drive - it will just produce an error.
WET is difficult to remove unless you have a program capable
of disinfecting it. Contact F-Secure anti-virus support for more
info.
![](/images/pixel.gif"){kind=tracking}
