Process: dna.exe
from
Stardock Forums
dna.exe - General Information
Name:
dna.exe
Publisher
BitTorrent
Product:
BitTorrent
Default location:
%ProgramFiles%\BitTorrent_DNA\dna.exe
dna.exe - Description and Recommendation
Dna.exe is apparently a legitimate part of BitTorrent client these days, intended to "accelerate delivery of in-browser streaming media". For that purpose, it seems to estabilsh P2P connections rather aggressively.
What limited official information I've found is available here:
http://www.bittorrent.com/dna/
dna.exe - Uninstall Techniques