So we got hit by ransomware and the backups were also encrypted before we knew. We paid the ransom, and received a zipped file with 3 files: public.key, private.key, and software.exe.
We ran the software but all it appears to do is remove the .BTC extension - the files are still encrypted.
The ransomware does look like the one described here: https://www.bleepingcomputer.com/forums/t/631267/btclocker-btc-ransomware-support-topic-btc-btc-decrypt-filestxt/
Is there anything else we can try in order to use these keys to decrypt the data?