API - JWT validation
Id | bbd163f4-1f56-434f-9c23-b06713c119c2 |
Rulename | API - JWT validation |
Description | 42Crunch API protection against JWT validation |
Severity | Low |
Tactics | InitialAccess CredentialAccess |
Techniques | T1190 T1528 |
Required data connectors | 42CrunchAPIProtection |
Kind | Scheduled |
Query frequency | 5m |
Query period | 5m |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/42Crunch API Protection/Analytic Rules/APIJWTValidation.yaml |
Version | 1.0.1 |
Arm template | bbd163f4-1f56-434f-9c23-b06713c119c2.json |
apifirewall_log_1_CL
| where TimeGenerated >= ago(5m)
| where Error_Message_s has "missing [\"x-access-token\"]"
| project-away Non_blocking_mode_b, Source_Port_d, Destination_Port_d, Query_s, API_ID_g, Response_Header_s, Request_Header_s, Errors_s, Type, UUID_g
| sort by TimeGenerated desc
customDetails:
id: bbd163f4-1f56-434f-9c23-b06713c119c2
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/42Crunch API Protection/Analytic Rules/APIJWTValidation.yaml
requiredDataConnectors:
- dataTypes:
- apifirewall_log_1_CL
connectorId: 42CrunchAPIProtection
description: |
'42Crunch API protection against JWT validation'
severity: Low
queryPeriod: 5m
kind: Scheduled
tactics:
- InitialAccess
- CredentialAccess
eventGroupingSettings:
aggregationKind: SingleAlert
queryFrequency: 5m
query: |
apifirewall_log_1_CL
| where TimeGenerated >= ago(5m)
| where Error_Message_s has "missing [\"x-access-token\"]"
| project-away Non_blocking_mode_b, Source_Port_d, Destination_Port_d, Query_s, API_ID_g, Response_Header_s, Request_Header_s, Errors_s, Type, UUID_g
| sort by TimeGenerated desc
version: 1.0.1
triggerThreshold: 0
entityMappings:
- entityType: IP
fieldMappings:
- columnName: Source_IP_s
identifier: Address
- entityType: Host
fieldMappings:
- columnName: Hostname_s
identifier: HostName
- entityType: Account
fieldMappings:
- columnName: Instance_Name_s
identifier: FullName
status: Available
name: API - JWT validation
relevantTechniques:
- T1190
- T1528
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"apiVersion": "2024-01-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/bbd163f4-1f56-434f-9c23-b06713c119c2')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/bbd163f4-1f56-434f-9c23-b06713c119c2')]",
"properties": {
"alertRuleTemplateName": "bbd163f4-1f56-434f-9c23-b06713c119c2",
"customDetails": null,
"description": "'42Crunch API protection against JWT validation'\n",
"displayName": "API - JWT validation",
"enabled": true,
"entityMappings": [
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "Source_IP_s",
"identifier": "Address"
}
]
},
{
"entityType": "Host",
"fieldMappings": [
{
"columnName": "Hostname_s",
"identifier": "HostName"
}
]
},
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "Instance_Name_s",
"identifier": "FullName"
}
]
}
],
"eventGroupingSettings": {
"aggregationKind": "SingleAlert"
},
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/42Crunch API Protection/Analytic Rules/APIJWTValidation.yaml",
"query": "apifirewall_log_1_CL \n| where TimeGenerated >= ago(5m) \n| where Error_Message_s has \"missing [\\\"x-access-token\\\"]\" \n| project-away Non_blocking_mode_b, Source_Port_d, Destination_Port_d, Query_s, API_ID_g, Response_Header_s, Request_Header_s, Errors_s, Type, UUID_g \n| sort by TimeGenerated desc \n",
"queryFrequency": "PT5M",
"queryPeriod": "PT5M",
"severity": "Low",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"CredentialAccess",
"InitialAccess"
],
"techniques": [
"T1190",
"T1528"
],
"templateVersion": "1.0.1",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}