{"id":"f43f5d2f-3f2a-4cc8-b1af-81fde7dbaf0e","title":"AWS Suspicious SAML Activity","description":"Identifies when suspicious SAML activity has occurred in AWS. An adversary could gain backdoor access via SAML.","author":"Austin Songer","status":"test","level":"medium","date":"2021-09-22","modified":"2022-12-18","tags":["attack.initial-access","attack.lateral-movement","attack.persistence","attack.privilege-escalation","attack.stealth","attack.t1078","attack.t1548","attack.t1550","attack.t1550.001"],"technique_ids":["T1078","T1548","T1550","T1550.001"],"logsource":{"product":"aws","service":"cloudtrail"},"falsepositives":["Automated processes that uses Terraform may lead to false positives.","SAML Provider could be updated by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.","SAML Provider being updated from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule."],"references":["https://docs.aws.amazon.com/IAM/latest/APIReference/API_UpdateSAMLProvider.html","https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRoleWithSAML.html"],"source_path":"rules/cloud/aws/cloudtrail/aws_susp_saml_activity.yml","source_sha256":"c90617886006d86216ea86cce6fc275be6504f61e1142770a2ee9c5ffa5bad8e","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/cloud/aws/cloudtrail/aws_susp_saml_activity.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: AWS Suspicious SAML Activity\nid: f43f5d2f-3f2a-4cc8-b1af-81fde7dbaf0e\nstatus: test\ndescription: Identifies when suspicious SAML activity has occurred in AWS. An adversary could gain backdoor access via SAML.\nreferences:\n    - https://docs.aws.amazon.com/IAM/latest/APIReference/API_UpdateSAMLProvider.html\n    - https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRoleWithSAML.html\nauthor: Austin Songer\ndate: 2021-09-22\nmodified: 2022-12-18\ntags:\n    - attack.initial-access\n    - attack.lateral-movement\n    - attack.persistence\n    - attack.privilege-escalation\n    - attack.stealth\n    - attack.t1078\n    - attack.t1548\n    - attack.t1550\n    - attack.t1550.001\nlogsource:\n    product: aws\n    service: cloudtrail\ndetection:\n    selection_sts:\n        eventSource: 'sts.amazonaws.com'\n        eventName: 'AssumeRoleWithSAML'\n    selection_iam:\n        eventSource: 'iam.amazonaws.com'\n        eventName: 'UpdateSAMLProvider'\n    condition: 1 of selection_*\nfalsepositives:\n    - Automated processes that uses Terraform may lead to false positives.\n    - SAML Provider could be updated by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.\n    - SAML Provider being updated from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1078","id":"T1078","name":"Valid Accounts","page":"techniques/enterprise/T1078/"},{"key":"enterprise/T1548","id":"T1548","name":"Abuse Elevation Control Mechanism","page":"techniques/enterprise/T1548/"},{"key":"enterprise/T1550","id":"T1550","name":"Use Alternate Authentication Material","page":"techniques/enterprise/T1550/"},{"key":"enterprise/T1550.001","id":"T1550.001","name":"Application Access Token","page":"techniques/enterprise/T1550.001/"}],"data_path":"data/detection-rules/f43f5d2f-3f2a-4cc8-b1af-81fde7dbaf0e.json","kind":"sigma"}