Suspicious AWS Role Assumption via Cognito Web Identity

ATT&CK techniques

Initial Access → Lateral Movement

Recon
Resource Dev
Initial Access
- T1078.004Cloud Accounts
Execution
Persistence
- T1078.004Cloud Accounts
Priv Esc
- T1078.004Cloud Accounts
Defense Evasion
- T1078.004Cloud Accounts
- T1550.001Application Access Token
Cred Access
Discovery
Lateral Movement
- T1550.001Application Access Token
Collection
C2
Exfiltration
Impact

What it detects

This rule detects CloudTrail AssumeRoleWithWebIdentity events whose identity provider is cognito-identity.amazonaws.com which the AWS Amplify role takeover technique abuses to assume a victim account authRole or unauthRole from an attacker controlled identity pool for cross account access.

Reporting behind it

Related detections9 linkedT1078.004 — drag to rearrange

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Suspicious AWS Role Assumption via Cognito Web Identity

Pivot detection · T1078.004 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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