AWSCloudTrail
| where EventName == "CreateAccessKey"
| project-away SourceSystem,Category,Type,TenantId,EventVersion,SessionIssuerAccountId
| extend UserName = substring(UserIdentityPrincipalid, indexof_regex(UserIdentityPrincipalid, ":") + 1)
| extend Name = split(UserName,'@')[0],UpnSuffix = split(UserName,'@')[1]
entityMappings:
- fieldMappings:
- columnName: Name
identifier: Name
- columnName: UpnSuffix
identifier: UPNSuffix
entityType: Account
- fieldMappings:
- columnName: SourceIpAddress
identifier: Address
entityType: IP
triggerOperator: gt
tactics:
- Persistence
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_UserAccessKeyCreated.yaml
alertDetailsOverride:
alertDescriptionFormat: User {{Name}} (principal {{UserIdentityPrincipalid}}) created a new IAM access key in region {{AWSRegion}}.
alertDisplayNameFormat: IAM access key created by {{Name}} in {{AWSRegion}}
version: 1.0.2
query: |
AWSCloudTrail
| where EventName == "CreateAccessKey"
| project-away SourceSystem,Category,Type,TenantId,EventVersion,SessionIssuerAccountId
| extend UserName = substring(UserIdentityPrincipalid, indexof_regex(UserIdentityPrincipalid, ":") + 1)
| extend Name = split(UserName,'@')[0],UpnSuffix = split(UserName,'@')[1]
triggerThreshold: 0
relevantTechniques:
- T1098.001
queryPeriod: 15m
status: Available
severity: Medium
kind: Scheduled
customDetails:
AWSRegion: AWSRegion
EventName: EventName
UserAgent: UserAgent
name: AWSCloudTrail - Creation of Access Key for IAM User
queryFrequency: 15m
id: 9a6554e6-63d9-4f94-9b32-64d1d40628f2
description: |
Detects creation of a new IAM access key on an existing user account, which could be used to establish persistence. This action should be validated by the AWS account administrator. Reference: https://stratus-red-team.cloud/attack-techniques/AWS/aws.persistence.iam-backdoor-user/
requiredDataConnectors:
- dataTypes:
- AWSCloudTrail
connectorId: AWS
