MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Lateral Movement |
Telemetry coverage
| Platform | Record / event type |
|---|---|
| GCP | google.iam.admin.CreateServiceAccountKey: Create service account key |
Rules detecting the same action
These rules filter on the same operation.
Rule body
id: fc135860-8773-4ead-b5be-9789af1ff8ff
name: GCP IAM - New Service Account Key
description: |
'Detects new service account key creation.'
severity: Low
status: Available
requiredDataConnectors:
- connectorId: GCPIAMDataConnector
dataTypes:
- GCP_IAM
queryFrequency: 24h
queryPeriod: 24h
triggerOperator: gt
triggerThreshold: 0
tactics:
- LateralMovement
relevantTechniques:
- T1550
query: |
GCP_IAM
| where PayloadMethodname =~ 'google.iam.admin.v1.CreateServiceAccountKey'
| extend result = parse_json(todynamic(PayloadAuthorizationinfo))[0]['granted']
| where result =~ 'true'
| extend service_account = extract(@'serviceAccounts\/(.*?)@', 1, PayloadResponseName)
| project-away result
| extend AccountName = tostring(split(service_account, "@")[0]), AccountUPNSuffix = tostring(split(service_account, "@")[1])
entityMappings:
- entityType: Account
fieldMappings:
- identifier: FullName
columnName: service_account
- identifier: Name
columnName: AccountName
- identifier: UPNSuffix
columnName: AccountUPNSuffix
- entityType: IP
fieldMappings:
- identifier: Address
columnName: SrcIpAddr
version: 1.0.1
kind: Scheduled
Stages and Predicates
Stage 1: source
GCP_IAM
Stage 2: where
| where PayloadMethodname =~ 'google.iam.admin.v1.CreateServiceAccountKey'
Stage 3: extend
| extend result = parse_json(todynamic(PayloadAuthorizationinfo))[0]['granted']
Stage 4: where
| where result =~ 'true'
Stage 5: extend
| extend service_account = extract(@'serviceAccounts\/(.*?)@', 1, PayloadResponseName)
Stage 6: project-away
| project-away result
Stage 7: extend
| extend AccountName = tostring(split(service_account, "@")[0]), AccountUPNSuffix = tostring(split(service_account, "@")[1])
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
PayloadMethodname | eq |
| field:"gcp::method_name" kind:eq value:"google.iam.admin.v1.CreateServiceAccountKey" |
result | eq |
| field:"result" kind:eq value:"true" |
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
service_account | extend |
AccountName | extend |
AccountUPNSuffix | extend |