Remote usage of an Azure Managed Identity token

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	5 Days
Required Data	Azure Audit Log
Detection Modules	Cloud
Detector Tags	Cloud Serverless Function Credentials Theft Analytics
ATT&CK Tactic	Credential Access (TA0006)
ATT&CK Technique	Steal Application Access Token (T1528), Unsecured Credentials (T1552)
Severity	Low

Description

An Azure Managed Identity token, which is attached to a compute service, was used externally of the cloud environment.

Attacker's Goals

Exfiltrate valid token and abuse it remotely.

Investigative actions

• Verify whether the Managed Identity should be used remotely.
• Check what API calls were executed by the Managed Identity.
• Check if the relevant compute service is compromised.

Variations

Remote usage of an Azure Function App's Managed Identity token

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006)
ATT&CK Technique	Steal Application Access Token (T1528), Unsecured Credentials (T1552)
Severity	Medium

Description

An Azure Managed Identity token, which is attached to a compute service, was used externally of the cloud environment.

Attacker's Goals

Exfiltrate valid token and abuse it remotely.

Investigative actions

• Verify whether the Managed Identity should be used remotely.
• Check what API calls were executed by the Managed Identity.
• Check if the relevant compute service is compromised.

Remote usage of an Azure Automation Account's Managed Identity token

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006)
ATT&CK Technique	Steal Application Access Token (T1528), Unsecured Credentials (T1552)
Severity	Medium

Description

An Azure Managed Identity token, which is attached to a compute service, was used externally of the cloud environment.

Attacker's Goals

Exfiltrate valid token and abuse it remotely.

Investigative actions

• Verify whether the Managed Identity should be used remotely.
• Check what API calls were executed by the Managed Identity.
• Check if the relevant compute service is compromised.

Remote usage of an Azure Managed Identity token from an unusual ASN

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006)
ATT&CK Technique	Steal Application Access Token (T1528), Unsecured Credentials (T1552)
Severity	High

Description

An Azure Managed Identity token, which is attached to a compute service, was used externally of the cloud environment.

Attacker's Goals

Exfiltrate valid token and abuse it remotely.

Investigative actions

• Verify whether the Managed Identity should be used remotely.
• Check what API calls were executed by the Managed Identity.
• Check if the relevant compute service is compromised.

Remote usage of an Azure Managed Identity token from an unusual IP

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006)
ATT&CK Technique	Steal Application Access Token (T1528), Unsecured Credentials (T1552)
Severity	Medium

Description

An Azure Managed Identity token, which is attached to a compute service, was used externally of the cloud environment.

Attacker's Goals

Exfiltrate valid token and abuse it remotely.

Investigative actions

• Verify whether the Managed Identity should be used remotely.
• Check what API calls were executed by the Managed Identity.
• Check if the relevant compute service is compromised.