Both players are unknown. I find it easy to get away from this hand, fold and move on. But isn't it a bit to weak? The main reason I fold is cause I really don't know what to do here.

Maybe the best thing is to fold vs unknowns, but when do I start to play these hands? Call vs aggro 3bettor, or 4bet/fold or...?

Poker Stars, $0.10/$0.25 No Limit Hold'em Cash, 6 Players

Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite. 

SB: $29.32 (117.3 bb)

Hero (BB): $25 (100 bb)

UTG: $26.45 (105.8 bb)

MP: $22.87 (91.5 bb)

CO: $31.76 (127 bb)

BTN: $25.14 (100.6 bb)

Preflop: Hero is BB with As Qs

2 folds, CO raises to $0.75, BTN raises to $2.60, 2 folds, CO raises to $6.50, BTN calls $3.90

Flop: ($13.35) 4h 3s 3c (2 players)

CO bets $25.26 and is all-in, BTN folds

Results: $13.35 pot ($0.60 rake)

Final Board: 4h 3s 3c 

CO mucked and won $12.75 ($6.25 net)

BTN mucked and lost (-$6.50 net)