The BianLian ransomware decryptor is available for free and the program is a standalone executable that doesn’t require installation. Users can select the location they wish to decrypt and provide the software with a pair of original/encrypted files. There’s also an option for users with a valid decryption password, but if the victim doesn’t have one, the software can still attempt to figure it out by iterating through all known BianLian passwords. The decryptor also offers an option to backup encrypted files to prevent irreversible loss of data if something goes wrong during the process. Those attacked by newer versions of the BianLian ransomware will have to locate the ransomware binary on the hard drive, which might contain data that can be used for deciphering the locked files.
Those who manage to retrieve BianLian binaries are requested to send them to “decryptors@avast.com” to help Avast improve its decryptor.
https://www.bleepingcomputer.com/news/security/avast-releases-free-bianlian-ransomware-decryptor/
