2 distinct techniques documented for this family, organized by ATT&CK tactic.
Infection with such an encryption Trojan is fatal for the afflicted users and companies and, in many cases, decrypting the data without the appropriate key is extremely resource-intensive, even impossible. Looking at Manamecrypt/CryptoHost, it is possible to decrypt the files of the current attacks.
Paying the ransom is no guarantee that the data will be decrypted again by the attackers. An extortioner can suddenly demand more money to release the data... The payment demanded is generally made via e-Payment systems that provide anonymised accounts and payment methods - in the current case: Bitcoin.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.