Cloud impersonation attempt by unusual identity type

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	5 Days
Required Data	Requires one of the following data sources: AWS Audit Log OR Gcp Audit Log
Detection Modules	Cloud
ATT&CK Tactic	Initial Access (TA0001)
ATT&CK Technique	Valid Accounts (T1078), Trusted Relationship (T1199)
Severity	Informational

Description

A suspicious identity type has attempted to impersonate another identity.

Attacker's Goals

• Escalate privileges to bypass access controls
• Avoid detection throughout their compromise.

Investigative actions

• Check the identity's designation.
• Verify that the identity did not perform sensitive operation on behalf of the impersonated identity.

Variations

Cloud impersonation attempt of a management role by unusual identity type

Synopsis

Field	Value
ATT&CK Tactic	Initial Access (TA0001)
ATT&CK Technique	Valid Accounts (T1078), Trusted Relationship (T1199)
Severity	Informational

Description

An unusual cloud identity type attempted to impersonate a management role.

Attacker's Goals

• Escalate privileges to bypass access controls
• Avoid detection throughout their compromise.

Investigative actions

• Check the identity's designation.
• Verify that the identity did not perform sensitive operation on behalf of the impersonated identity.

Successful cloud impersonation by an unusual identity type

Synopsis

Field	Value
ATT&CK Tactic	Initial Access (TA0001)
ATT&CK Technique	Valid Accounts (T1078), Trusted Relationship (T1199)
Severity	Medium

Description

A suspicious identity type has successfully impersonated another identity.

Attacker's Goals

• Escalate privileges to bypass access controls
• Avoid detection throughout their compromise.

Investigative actions

• Check the identity's designation.
• Verify that the identity did not perform sensitive operation on behalf of the impersonated identity.