Authentication method added to an Azure account

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	AzureAD Audit Log
Detection Modules	Identity Threat Module, SaaS Threat Detection
ATT&CK Tactic	Persistence (TA0003)
ATT&CK Technique	Valid Accounts (T1078)
Severity	Informational

Description

An identity attempted to add an Azure authentication method.

Attacker's Goals

• An attacker can add an authentication method to an account, so they can have later access to the tenant and resources.

Investigative actions

• Check if the authentication method is legitimate in the organization.
• Check whether the identity is permitted to perform such actions.
• Follow the account for possible suspicious or unusual logins.

Variations

Suspicious authentication method addition to privileged Azure account

Synopsis

Field	Value
ATT&CK Tactic	Persistence (TA0003)
ATT&CK Technique	Valid Accounts (T1078)
Severity	Medium

Description

A privileged user added an Azure authentication method.

Attacker's Goals

• An attacker can add an authentication method to an account, so they can have later access to the tenant and resources.

Investigative actions

• Check if the authentication method is legitimate in the organization.
• Check whether the identity is permitted to perform such actions.
• Follow the account for possible suspicious or unusual logins.

Suspicious authentication method addition to Azure account

Synopsis

Field	Value
ATT&CK Tactic	Persistence (TA0003)
ATT&CK Technique	Valid Accounts (T1078)
Severity	Low

Description

An identity added an Azure authentication method.

Attacker's Goals

• An attacker can add an authentication method to an account, so they can have later access to the tenant and resources.

Investigative actions

• Check if the authentication method is legitimate in the organization.
• Check whether the identity is permitted to perform such actions.
• Follow the account for possible suspicious or unusual logins.