25NL: AA facing all in on flop

[digit]

Completely unknown villian, no reads, no stats, only 2nd hand at the table. Maybe checking the flop is wrong, but it looks dry and i imagine the best chance of getting another bet out of the villian is to check to him. As you will see my check raise gets replied to with an all in, should I have folded here?

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero ($24.75)
BB ($34.90)
UTG ($24.65)
MP ($23.65)
CO ($24.40)
Button ($35.60)

Preflop: Hero is SB with A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#666666">3 folds</font>, Button calls $0.25, <font color="#CC3333">Hero raises to $1.25</font>, <font color="#666666">1 fold</font>, Button calls $1.

Flop: ($2.75) 7[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets $1</font>, <font color="#CC3333">Hero raises to $3</font>, <font color="#CC3333">Button raises to $34.35</font>, Hero calls $20.50 (All-In).

Turn: ($49.75) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

River: ($49.75) 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

Final Pot: $60.60