Linux Ransomware Has Predictable Key, Automated Decryption Tool Released (csoonline.com)
itwbennett writes: Last week a new piece of ransomware was discovered that targets Linux servers. Yesterday, researchers at Bitdefender discovered a critical flaw in how the ransomware (dubbed Linux.Encoder.1) operates while testing a sample in their lab and released a free tool that will automatically decrypt any files on a victim's system that were targeted.
It probably included the source code when the system was infected.
If it was open source there'd be a patch already.