This morning, an interesting phishing email hit my mailbox. It targets Metamask[1], a cryptocurrency wallet, available as a browser extension and a mobile app, that lets users store, send, and receive crypto money. It’s pretty popular, so a juicy target for criminals. In February, I already mentioned a campaign against them[2].
Today’s email was different and used another approach. Most services that we use daily ask us to implement a 2nd authentication factor. That makes simple credentials useless if you can’t interact with the victim and grab the temporary token, code, …
But most services also offer a “password recovery” process. In the case of Metamask, it’s based on your secret security phrase that you created during the account creation process[3]. That’s exactly the target of this phishing campaign. They ask you to provide this secret phrase.
First, they put some pressure on you, pretending that your wallet is at risk:
Then, they ask you to provide your secret phrase:
The campaing relies on the domain captchasolve[.]help that has been registered two days ago.
[1] https://metamask.io
[2] https://isc.sans.edu/diary/Fake+Incident+Report+Used+in+Phishing+Campaign/32722
[3] https://support.metamask.io/configure/wallet/how-can-i-reset-my-password/
Xavier Mertens (@xme)
Xameco
Senior ISC Handler – Freelance Cyber Security Consultant
PGP Key
(c) SANS Internet Storm Center. https://isc.sans.edu Creative Commons Attribution-Noncommercial 3.0 United States License.