Suspicious M365 Password Spraying via Azure PowerShell AppId from Quad7 Botnet

ATT&CK techniques

Initial Access → Cred Access

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
- T1110.003Password Spraying
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects Microsoft 365 sign-in attempts using the Azure PowerShell application id 1950a258-227b-4e31-a9cf-717495945fc2 against the Microsoft Graph resource identity, the combination the Quad7 botnet relies on for distributed password spraying. The operators relay authentication through compromised SOHO routers to validate stolen credentials at scale. Clustering on this AppId and resource surfaces the brute force activity for review.

Reporting behind it

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Suspicious M365 Password Spraying via Azure PowerShell AppId from Quad7 Botnet

Pivot detection · T1078.004 · 9 related

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