AssumeRoleWithWebIdentity

CSP: AWS

Tactics:

Initial Access Privilege Escalation Lateral Movement

Techniques:

T1078.004

Tags:

AWS STS

Event

Returns temporary credentials for a user authenticated via an OIDC identity provider (e.g., Cognito, Google) to assume an IAM role.

Security Context

• Compromised credentials or stolen tokens allow adversaries to operate as legitimate users, making detection significantly more difficult.
• Escalating privileges enables adversaries to access sensitive resources and perform administrative actions beyond their initial access level.
• Cross-account role assumption enables lateral movement between cloud accounts, potentially reaching production or sensitive environments.

Log Source

CloudTrail

Sample Event

MITRE ATT&CK Mapping

Tactics: Initial Access Privilege Escalation Lateral Movement

Techniques:

• T1078.004 — Cloud Accounts — Valid accounts in cloud environments may allow adversaries to perform actions to achieve Initial Access, Persistence, Privilege Escalation, or Defense Evasion. Cloud accounts are those created and configured by an organization for use by users, remote support, services, or for administration of r...