Account with stolen coins

[bench]

How did he stole your coins? Things aren't looking good. 

[Thul3]

Hi on DEX is an account with about 500k CNY and 100k BTS which was basicly stolen from me.I know the accounts name and monitor it since september last year as thats the time when it happened.
I guess the guy run away with somebodies else coins (44 BTC) and never came back to DEX for my coins.He had a big sell order since september of the coins he stole from me which were executed back in december.

Is there any possibility to gain somehow access to this account to get the funds back since i'm really "pissed" to lose them to a scammer who let them die on DEX.