AWS SAML Activity

Elastic Stack Serverless Security

Identifies when SAML activity has occurred in AWS. An adversary could manipulate SAML to maintain access to the target.

Rule type: query

Rule indices:

• filebeat-*
• logs-aws*

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: now-25m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)

Maximum alerts per execution: 100

References:

• https://docs.aws.amazon.com/IAM/latest/APIReference/API_UpdateSAMLProvider.html
• https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRoleWithSAML.html

Tags:

• Elastic
• Cloud
• AWS
• Continuous Monitoring
• SecOps
• Identity and Access

Version: 2

Rule authors:

• Austin Songer

Rule license: Elastic License v2

The AWS Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.

event.dataset:aws.cloudtrail and event.provider:(iam.amazonaws.com or sts.amazonaws.com) and event.action:(Assumerolewithsaml or
UpdateSAMLProvider) and event.outcome:success

Framework: MITRE ATT&CKTM

• Tactic:

  • Name: Defense Evasion
  • ID: TA0005
  • Reference URL: https://attack.mitre.org/tactics/TA0005/

• Technique:

  • Name: Use Alternate Authentication Material
  • ID: T1550
  • Reference URL: https://attack.mitre.org/techniques/T1550/

• Sub-technique:

  • Name: Application Access Token
  • ID: T1550.001
  • Reference URL: https://attack.mitre.org/techniques/T1550/001/

• Tactic:

  • Name: Initial Access
  • ID: TA0001
  • Reference URL: https://attack.mitre.org/tactics/TA0001/

• Technique:

  • Name: Valid Accounts
  • ID: T1078
  • Reference URL: https://attack.mitre.org/techniques/T1078/