Suspicious Entra Sign-In to OfficeHome with axios User Agent

ATT&CK techniques

Initial Access → Collection

Recon
Resource Dev
Initial Access
- T1078.004Cloud Accounts
Execution
Persistence
- T1078.004Cloud Accounts
Priv Esc
- T1078.004Cloud Accounts
Defense Evasion
- T1078.004Cloud Accounts
Cred Access
- T1539Steal Web Session Cookie
- T1557Adversary-in-the-Middle
Discovery
Lateral Movement
Collection
- T1557Adversary-in-the-Middle
C2
Exfiltration
Impact

What it detects

This rule detects a successful Entra ID sign-in to the OfficeHome application where the user agent contains axios, an automation library used by the Tycoon 2FA adversary-in-the-middle platform. Tycoon 2FA relayed intercepted credentials and stolen session cookies through scripted axios clients to authenticate as the victim. A non-browser axios agent completing sign-in to OfficeHome indicates automated session token replay from an AiTM phishing kit.

Reporting behind it

Related detections9 linkedT1078.004 — drag to rearrange

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Suspicious Azure OpenAI Model Enumeration and Deployment Creation (via azure)

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Malicious Business Email Compromise OAuth Application Sign-In via Entra ID Service Principal (via azure)

Suspicious AWS API Call from TruffleHog Credential Scanner User Agent

Suspicious Chrome Launch With Remote Debugging via Airstalk (via process_creation)

Suspicious Compute Instance Metadata Modification in GCP

Suspicious Entra Sign-In to OfficeHome with axios User Agent

Pivot detection · T1078.004 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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