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Available Tools Making Dent in WannaCry Encryption


Tools are beginning to emerge that can be used to start the process of recovering files encrypted by WannaCry on some Windows systems.

This takes on extra urgency because today marks one week from the initial outbreak, and files encrypted during that first wave are on the clock and close to being lost forever.

Related Posts May 19, 2017 , 9:00 am May 18, 2017 , 4:57 pm May 18, 2017 , 10:18 am

Adrien Guinet, of Quarkslab, yesterday released a tool to the public called Wannakey that tries to recover one prime number from memory used to factor the RSA public key stored by the malware on the local drive. Once the public key is retrieved, it can be used to rebuild the private key and eventually, with a decryptor, recover encrypted files.

Guinet said he had some luck once he’d recovered the private key to decrypt files from an infected XP machine using Benjamin Delpy’s WanaDecrypt tool.

“I actually tried the Wanadecrypt tool. It works pretty well once you’ve got the private RSA...(continued)

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