What is Atek ransomware
A new variant of STOP/Djvu ransomware has been discovered that appends .atek extension to the files it encrypts. The ransomware leaves ransom notes called _readme.txt in users’ folders. Djvu ransomware may end up on a computer after a user runs a file downloaded from an untrustworthy source, for example, a pirated version of a program. Once it runs, the ransomware tries to connect to its command and control server, to get a unique encryption key. If it fails to connect to the server for some reason, then the ransomware uses its built-in key (offline key).