Win32:BogEnt [susp] on steam

hi everybody. excuse me for the “bad langage” i’m french and i’m not very good in english.
today i start my download for the game "planetside 2 " on steam. But after 20~30 min downloading (500 mo download/12 Go) avast detect the virus
“Win32:BogEnt [susp]” on C:/programmFile(x86)steam/steamapps/downloadings

i don’t know if its a virus, i never have this on my other game and he was appear when i “stop” (or pause) the download

if you ever had this problem, what is it? it’s a virus or nothing?

thx, shake

avast doesn’t say it is a virus, it says it is SUSP(icious)