The 'Trojan.Pif.Deltree' is a trojan in format of a PIF file.
Being run under Windows this file will execute DELTREE.EXE file
with '/Y *.*' command line which will result in deleting of all
directories (except shared ones) on hard drive within seconds.
The trojan will only work if Windows is installed to C:\Windows\
directory. Doesn't work under Windows NT and 3.xx.
[Analysis: Alexey Podrezov, F-Secure]