> On the same day, the Attacker posted a link to a key that would decrypt files encrypted by the Conti ransomware. [..] Without the decryption key, it is unknown whether systems could have been recovered fully [..] but it is highly likely that the recovery timeframe would have been considerably longer.

Is the implication that they paid the ransom?

The report seems to go out of its way to avoid stating why the attacker posted the decryption key.