VIRSIM.ZIP   Virus Simulator
 +Virus Simulator creates a simulated test suite
 +of .COM and .EXE programs as  well  as  boot
 +sector and memory resident  viruses.  These
 +programs contain the signatures (only) from
 +real viruses. The programs themselves are
 +not really infected with anything, but
 +contain  carefully  selected portions of code
 +from their real virus counterparts. Whenever
 +possible, these  sections  of  code or virus
 +signatures are  selected  to  trigger
 +vigilant virus detectors. Since these are
 +really only dummy viruses, not all   infected
 +program  simulations produced by  Virus
 +Simulator  will trigger every virus detecting
 +program.