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3. But couldn't it be used by criminals for malicious purposes?!
While Crypter can be used to simulate a real Ransomware attack, steps have been taken to allow users to reverse any damage, and to prevent use by criminals in the wild. Ransomware is only useful to a criminal if they have the ability to decrypt the user's files and the user does not. Traditionally this is done by sending the encryption key to a remote Command & Control (CnC) server controlled by an attack once the user's files have been encrypted. The victim then pays a ransom fee to retrieve access to the key that will decrypt their files.
With Crypter however, there is no inbuilt CnC capability. Once the user's files have been encrypted, the decryption key is written to key.txt in the same directory as the ransomware executable. The user can then use this key to decrypt their files.
4. Could it not be adapted for malicious use?
It is certainly possible to further develop Crypter and implement the missing CnC capabilities. However, this requires expertise and knowledge in programming as well as malware tactics and techniques. Anyone motivated and knowledgeable enough to add these components would most likely create a piece of Ransomware from scratch, and not make use of an existing, open source and publically available package as the basis for their attacks.
