I went by their website to see if they already had some more recent news regarding the incident but sadly the latest one (regarding this subject) was from 23-12-2020[2]:
Our investigation is ongoing, and we are taking all necessary and precautionary measures to prevent such incidents from reoccurring.
Just a note though, this wasn't just limited to BTC[3]:
In terms of units, 292 BTC (about $6.5 million) has been stolen, and transactions of another 18.5 BTC ($415,000) are waiting to get confirmed in the Bitcoin mempool, said Igamberdiev. The rest of the units include 867 ETH (about $521,900), 476,521 XRP (about $247,700), 20,651 ETC ($126,800), 50,000 USDT ($50,000) and 39,285 ZEC ($2.7 million).
For anyone curious here's the address on Blockchain :
https://blockchair.com/bitcoin/address/1A4PXZE5j8v7UuapYckq6fSegmY5i8uUyqThe balance was drained to 0, and he's got quite a lot of transactions recorded, mostly limited to 1 address which I assume was then sent to another one (probably some mixer I assume).
While it is still in the investigation stage, it will be very difficult if until now Exmo's clients are still waiting for a decision. I'm not too sure when the investigation took place linking various addresses where the transaction had been carried out would trigger the investigators to feel confused to the point of spending huge fees to pay VIP investigators.
What's more, the theft that took place was almost 2 years old, which meant they really couldn't find any traces that led to the light.