Ok. I found why...
There was samba error in the configuration of my box.
I disabled it and when I restart my Box, <01><02>_MSBRO disappeared.
Samba is not installed on my linux computer, but it deals with the configuration of my box which seems to use it.
So, no one is hacking my box
. But it looks like a strange hazard with the hacking of the Linuxquestion site just after the post of my messages, some what...