Vlk
10
what is the win32/hantaner virus?
Well - it’s a – virus… 
It is also called “Handy” by some AV vendors (Symantec, for example).
Unfortunately, I don’t have any further information about this virus available here, but a simple Google search for the phrase “hantaner virus” returns about 8,880 matches, and most of them are really relevant… 
Hope this helps,
Vlk