API - Account Takeover
Id | 25c86f99-0a91-4b7f-88f3-599a008e5ab8 |
Rulename | API - Account Takeover |
Description | 42Crunch API protection against account takeover |
Severity | High |
Tactics | CredentialAccess Discovery |
Techniques | T1110 T1087 |
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/APIAccountTakeover.yaml |
Version | 1.0.0 |
Arm template | 25c86f99-0a91-4b7f-88f3-599a008e5ab8.json |
let firstRec = apifirewall_log_1_CL
| where TimeGenerated >= ago(5m)
| project-away Non_blocking_mode_b, Source_Port_d, Destination_Port_d, Query_s, API_ID_g, Request_Header_s, Response_Header_s, Errors_s, Type, UUID_g
| where Instance_Name_s == "Instance_1" and (URI_Path_s has "/api/register" or URI_Path_s has "/api/reset") and Status_d == 403;
let recCount = iff((toscalar(firstRec | count) >= 20), 1, 0);
firstRec | take recCount
description: |
'42Crunch API protection against account takeover'
customDetails:
queryPeriod: 5m
name: API - Account Takeover
triggerThreshold: 0
tactics:
- CredentialAccess
- Discovery
severity: High
kind: Scheduled
entityMappings:
- entityType: IP
fieldMappings:
- identifier: Address
columnName: Source_IP_s
- entityType: Host
fieldMappings:
- identifier: HostName
columnName: Hostname_s
- entityType: Account
fieldMappings:
- identifier: FullName
columnName: Instance_Name_s
eventGroupingSettings:
aggregationKind: SingleAlert
queryFrequency: 5m
triggerOperator: gt
id: 25c86f99-0a91-4b7f-88f3-599a008e5ab8
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/42Crunch API Protection/Analytic Rules/APIAccountTakeover.yaml
version: 1.0.0
query: |
let firstRec = apifirewall_log_1_CL
| where TimeGenerated >= ago(5m)
| project-away Non_blocking_mode_b, Source_Port_d, Destination_Port_d, Query_s, API_ID_g, Request_Header_s, Response_Header_s, Errors_s, Type, UUID_g
| where Instance_Name_s == "Instance_1" and (URI_Path_s has "/api/register" or URI_Path_s has "/api/reset") and Status_d == 403;
let recCount = iff((toscalar(firstRec | count) >= 20), 1, 0);
firstRec | take recCount
requiredDataConnectors:
- connectorId: 42CrunchAPIProtection
dataTypes:
- apifirewall_log_1_CL
relevantTechniques:
- T1110
- T1087
{
"$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/25c86f99-0a91-4b7f-88f3-599a008e5ab8')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/25c86f99-0a91-4b7f-88f3-599a008e5ab8')]",
"properties": {
"alertRuleTemplateName": "25c86f99-0a91-4b7f-88f3-599a008e5ab8",
"customDetails": null,
"description": "'42Crunch API protection against account takeover'\n",
"displayName": "API - Account Takeover",
"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/APIAccountTakeover.yaml",
"query": "let firstRec = apifirewall_log_1_CL \n| where TimeGenerated >= ago(5m) \n| project-away Non_blocking_mode_b, Source_Port_d, Destination_Port_d, Query_s, API_ID_g, Request_Header_s, Response_Header_s, Errors_s, Type, UUID_g\n| where Instance_Name_s == \"Instance_1\" and (URI_Path_s has \"/api/register\" or URI_Path_s has \"/api/reset\") and Status_d == 403;\nlet recCount = iff((toscalar(firstRec | count) >= 20), 1, 0);\nfirstRec | take recCount\n",
"queryFrequency": "PT5M",
"queryPeriod": "PT5M",
"severity": "High",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"CredentialAccess",
"Discovery"
],
"techniques": [
"T1087",
"T1110"
],
"templateVersion": "1.0.0",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}