QQ 6-handed 10nl

Still not sure to handle situations like this! All input appreciated.

PokerStars No-Limit Hold'em, $0.10 BB (5 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

SB ($30.65)
Hero (BB) ($15.65)
UTG ($10)
MP ($3.60)
Button ($5.85)

Preflop: Hero is BB with Q, Q
1 fold, MP calls $0.10, Button raises to $0.40, SB calls $0.35, Hero raises to $2, 2 folds, SB calls $1.60

Flop: ($4.50) 8, K, 10 (2 players)
SB bets $2, Hero???

does he donk flops a lot? is it always below half pot? does he do this when he hits the flop or misses?

I just autoraise my entire range here unless I have indication that he's doing this with a real hand some of the time