Suspicious Entra Sign-In With Axios Automation User-Agent via AiTM Token Replay (via azure)

ATT&CK techniques

Defense Evasion → Collection

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1550.001Application Access Token
Cred Access
- T1557Adversary-in-the-Middle
Discovery
Lateral Movement
- T1550.001Application Access Token
Collection
- T1557Adversary-in-the-Middle
C2
Exfiltration
Impact

What it detects

This rule detects Microsoft Entra sign-ins presenting the axios/1.7.9 automation user-agent, a distinctive marker of Storm-2755 replaying stolen tokens through an adversary-in-the-middle framework in payroll pirate attacks against Canadian employees. Because interactive user sign-ins do not originate from the axios HTTP library, this user-agent on authentication traffic strongly indicates automated token replay rather than a legitimate user.

Reporting behind it

Related detections9 linkedT1550.001 — drag to rearrange

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Suspicious Entra Sign-In With Axios Automation User-Agent via AiTM Token Replay (via azure)

Pivot detection · T1550.001 · 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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