Vvoa ransomware is a computer virus that locks victim files until a ransom is paid. The cryptovirus derives from the wicked Djvu ransom family. First detected in 2016, this family keeps on growing. To this day there are more than 250 versions and there’s no telling when will it stop. Viruses from this family typically use an army-based RSA algorithm for encryption. Previous versions were decryptable, but recent years show activities of non-decryptable malware that uses on powerful encoding methods and online IDs while locking files. Those include Iiss, Agho, Jdyi.