This member of a BAT-trojans' family usually acts in a way, similar to its relatives' actions. BAT.AntiDN usually arrives in a batch-file and starts searching for such files on the infected computer. After that, this parasite infects these files with a copy of infections and performs other actions, which are usually aimed at harming the PC. This technique makes it quite hard to remove this infection completely, that's why it's strongly recommended to have a good and reliable security installed on your machine in order to prevent your PC from getting infected with BAT.AntiDN