Privileged Entra ID account sign-in via legacy authentication protocol

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Identifies directory role holders signing in via legacy authentication protocols (which bypass Conditional Access MFA), correlated with a high-impact audit operation within one hour. Suggests credential theft or MFA bypass on legacy-auth accounts.

Attribute	Value
Type	Hunting Query
Solution	Standalone Content
ID	57579898-8421-42a9-a7a1-bf7c777bd355
Tactics	InitialAccess, DefenseEvasion
Techniques	T1078.004, T1562.001
Required Connectors	AzureActiveDirectory
Source	[View on GitHub](https://github.com/Azure/Azure-Sentinel/blob/master/Hunting Queries/MultipleDataSources/PrivilegedAccountLegacyAuthSignIn.yaml)

Tables Used

This content item queries data from the following tables:

Table	Selection Criteria	Transformations	Ingestion API	Lake-Only
AuditLogs	OperationName in "Add member to role,Add member to role."	✓	✗	✓
SigninLogs		✓	✗	✓

Associated Connectors

The following connectors provide data for this content item:

Connector	Solution
AzureActiveDirectory	Microsoft Entra ID

Solutions: Microsoft Entra ID

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