Product
Entra ID OAuth Device Code Phishing via AiTM
2 rules 3 TTPsDetects successful Microsoft Entra ID sign-ins using the OAuth device code authentication protocol with the Microsoft Authentication Broker client requesting first-party Office API resources, indicative of adversary-in-the-middle (AiTM) phishing attacks such as Tycoon 2FA.
Microsoft 365 AiTM UserLoggedIn via Office App (Tycoon2FA)
2 rules 2 TTPsThis rule detects Microsoft 365 audit events indicative of Tycoon 2FA phishing-as-a-service (PhaaS) adversary-in-the-middle (AiTM) activity, identifying UserLoggedIn events where the Microsoft Authentication Broker requests access to Microsoft Graph or Exchange Online, or the Office web client application authenticates to itself, combined with Node.js-style user agents, bypassing MFA by relaying authentication and capturing session material.
Tycoon2FA AiTM Phishing via Microsoft Entra ID Sign-Ins
2 rules 2 TTPsDetects Microsoft Entra ID sign-ins consistent with Tycoon2FA phishing-as-a-service (PhaaS) adversary-in-the-middle (AiTM) activity targeting Microsoft 365 and Gmail, where the Microsoft Authentication Broker requests tokens for Microsoft Graph or Exchange Online, or the Office web client application authenticates to itself, combined with Node.js-style user agents (node, axios, undici).
Microsoft Graph Multi-Category Reconnaissance Burst
2 rules 2 TTPsThe rule detects Microsoft Graph activity from delegated user tokens where a single user session and source IP rapidly touches multiple high-value Graph paths indicative of reconnaissance, suggesting a broad enumeration playbook.