MalwareTips Bot

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While you may be familiar with attacks focused on users, such as email phishing or credential compromise, application-based attacks, such as consent phishing, is another threat vector you must be aware of. Today we wanted to share one of the ways application-based attacks can target the valuable data your organization cares about, and what you can do today to stay safe.

While each attack tends to vary, the core steps usually look something like this:
  1. An attacker registers an app with an OAuth 2.0 provider, such as Azure Active Directory.
  2. The app is configured in a way that makes it seem trustworthy, like using the name of a popular product used in the same ecosystem.
  3. The attacker gets a link in front of users, which may be done through conventional email-based phishing, by compromising a non-malicious website, or other techniques.
  4. The user clicks the link and is shown an authentic consent prompt asking them to grant the malicious app permissions to data.
  5. If a user clicks accept, they will grant the app permissions to access sensitive data.
  6. The app gets an authorization code which it redeems for an access token, and potentially a refresh token.
  7. The access token is used to make API calls on behalf of the user.
If the user accepts, the attacker can gain access to their mail, forwarding rules, files, contacts, notes, profile and other sensitive data and resources.

An image of a Consent screen from a sample malicious app named “Risky App.

Consent screen from a sample malicious app named “Risky App”


The post Protecting your remote workforce from application-based attacks like consent phishing appeared first on Microsoft Security.
 
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