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While NW.js is a great tool for developers to make cross platform applications, it also means that, theoretically, attackers could easily package the ransomware for all three operating systems, according to Emsisoft.
Ransom32 uses 128-bit AES encryption to lock up a target's files and can enable the decryption of one single file to prove to victims that their files are recoverable, making people more inclined to fork out the ransom.
One way to spot Ransom32 is by its relatively large file size. It's 22MB which is larger than most ransomware-infected packages being used today. The best way to protect yourself against these kinds of attacks is to have a robust backup strategy so even if your computer is held hostage you can rest assured that you still have possession of your precious files.
You can visit the Emsisoft blog post for more details on how Ransom32 works.
[Via Emsisoft Blog]