ERIS Ransomware encrypts user files with Salsa20 + RSA, and then requires a ransom to give it back. It is distributed via RIG exploit kit. A user would simple have visit a malicious web page to get infected with ERIS.
Sodin, Sodinokibi, REvil or BlueBackground Ransomware encrypts user data with AES, and then requires a ransom at 0.475–0.950 BTC to return files. It exploits a zero-day, CVE-2018-8453, was previously abused by an APT, and was patched in the Oct 18 Patch Tuesday.
LooCipher Ransomware encrypts user data with AES, and then requires a ransom in BTC to return files. It spreads via spam email campaigns. It spread macro enabled word document called Info_BSV_2019.docm
This list provides list of ransomware decryptors for various famous ransomware. Although it can not be guaranteed that all of files will be recovered but still it worth while to check out them.
Linux snippet to install Python LDAP on various Linux distributions.