Security researchers find WalletGenerator.net to be using malicious code

27 May, 2019
by David Borman
Security
Security researchers find WalletGenerator.net to be using malicious code

Recently MyCrypto posted a security disclosure on their Medium blog. It seems that WalletGenerator.net has been updated with code that does not output unique wallet keys, but rather is generating them deterministically, meaning that malicious parties could know exactly what the private keys to users' wallets are. MyCrypto suggests users cease using the site moving forward.

According to the posting, any addresses generated after August 17th of 2018 are considered compromised and funds should be moved immediately. After this date the code on the site was modified with the new, vulnerable code. The code is taken originally from github and the source from there is still safe to use. It seems someone intentionally modified the code, making it exceedingly likely this is no mistake.

The new code does not actually take random input data to generate unique keys, but instead seems to use predetermined images as seed data, meaning the wallets generated can easily be re-generated by anyone who knows what image was used, presumably the site owner or a hacker.

When MyCrypto reached out to the owners of the site, they seemed to not know what the researchers were talking about and implied they had accessed a phishing site by mistake. Then, less than a day later, the code was changed back to the original, safe code. No explanation was ever given.

The researchers admit it is unclear if the owners of the site are the shady actors or if the site was somehow compromised by a third party. Due to the lack of any transparency from the owners, MyCrypto is heavily recommending that users stay away, even though the code has, for now, been returned to normal.

From the post:

"We’re still considering this highly suspect and still recommending users who generated public / private keypairs after August 17, 2018, to move their funds. We do not recommend using WalletGenerator.net moving forward, even if the code at this very moment is not vulnerable."

There are a variety of other wallet generators available, and users should alsways do their own homework to make sure their chosen software is safe and works as intended. Stick right here with Chepicap for all updates!

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