In an odd twist, the Koolova ransomware will decrypt for the low price of reading two articles on ransomware… The articles that Koolova wants you to read are an article from Google Security Blog called Stay safe while browsing and BleepingComputer’s Jigsaw Ransomware Decrypted: Will delete your files until you pay the Ransom article.
Once you read both articles, the Decripta i Miei File, or Decrypt My Files, button becomes available.
You’ll most likely never run into this in the wild, it seems like a nice proof of concept and does extreme forced learning!