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:
- entityType: Account
fieldMappings:
- identifier: Name
columnName: Name
- identifier: UPNSuffix
columnName: UpnSuffix
- entityType: IP
fieldMappings:
- identifier: Address
columnName: SourceIpAddress
tactics:
- Persistence
requiredDataConnectors:
- dataTypes:
- AWSCloudTrail
connectorId: AWS
alertDetailsOverride:
alertDisplayNameFormat: IAM access key created by {{Name}} in {{AWSRegion}}
alertDescriptionFormat: User {{Name}} (principal {{UserIdentityPrincipalid}}) created a new IAM access key in region {{AWSRegion}}.
id: 9a6554e6-63d9-4f94-9b32-64d1d40628f2
severity: Medium
status: Available
customDetails:
AWSRegion: AWSRegion
UserAgent: UserAgent
EventName: EventName
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]
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_UserAccessKeyCreated.yaml
kind: Scheduled
queryPeriod: 15m
version: 1.0.2
name: AWSCloudTrail - Creation of Access Key for IAM User
queryFrequency: 15m
triggerThreshold: 0
relevantTechniques:
- T1098.001
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/
triggerOperator: gt
