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LowSigmaHQAustin Songer @austinsonger

AWS STS GetSessionToken Misuse

Identifies the suspicious use of GetSessionToken. Tokens could be created and used by attackers to move laterally and escalate privileges.

Detection logic

Detection requirements

Platform
ContainersIaaSIdentity ProviderLinuxmacOSOffice SuiteSaaSWindows

The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.

Log source product
aws
Log source service
cloudtrail

Known benign triggers

  • GetSessionToken may be done by a system or network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. GetSessionToken from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

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