AzureDiagnostics
| where ResourceType == 'PUBLICIPADDRESSES' and Category == "DDoSMitigationFlowLogs"
//sample rate of mitigation device 1:1000 so the PPS of the source is estimated to be x1000.
| summarize PPS = 1000 * count() by destPublicIpAddress_s, sec = bin(TimeGenerated, 1s), sourcePublicIpAddress_s
| summarize maxPPS = max(PPS) by destPublicIpAddress_s, sourcePublicIpAddress_s
| order by destPublicIpAddress_s, maxPPS desc
| where maxPPS > 10000
relevantTechniques:
- T1498
version: 1.0.1
name: DDoS Attack IP Addresses - PPS Threshold
queryPeriod: 2h
kind: Scheduled
requiredDataConnectors:
- connectorId: DDOS
dataTypes:
- AzureDiagnostics
severity: Medium
entityMappings:
- entityType: IP
fieldMappings:
- columnName: sourcePublicIpAddress_s
identifier: Address
query: |
AzureDiagnostics
| where ResourceType == 'PUBLICIPADDRESSES' and Category == "DDoSMitigationFlowLogs"
//sample rate of mitigation device 1:1000 so the PPS of the source is estimated to be x1000.
| summarize PPS = 1000 * count() by destPublicIpAddress_s, sec = bin(TimeGenerated, 1s), sourcePublicIpAddress_s
| summarize maxPPS = max(PPS) by destPublicIpAddress_s, sourcePublicIpAddress_s
| order by destPublicIpAddress_s, maxPPS desc
| where maxPPS > 10000
tactics:
- Impact
description: Identifies IP addresses that generates maximal traffic rate over 10k PPS during DDoS attack mitigation
triggerOperator: gt
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure DDoS Protection/Analytic Rules/AttackSourcesPPSThreshold.yaml
eventGroupingSettings:
aggregationKind: SingleAlert
status: Available
queryFrequency: 2h
id: 6e76fd9d-8104-41eb-bad3-26054a3ad5f0
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/6e76fd9d-8104-41eb-bad3-26054a3ad5f0')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/6e76fd9d-8104-41eb-bad3-26054a3ad5f0')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01-preview",
"properties": {
"displayName": "DDoS Attack IP Addresses - PPS Threshold",
"description": "Identifies IP addresses that generates maximal traffic rate over 10k PPS during DDoS attack mitigation",
"severity": "Medium",
"enabled": true,
"query": "AzureDiagnostics \n| where ResourceType == 'PUBLICIPADDRESSES' and Category == \"DDoSMitigationFlowLogs\"\n//sample rate of mitigation device 1:1000 so the PPS of the source is estimated to be x1000.\n| summarize PPS = 1000 * count() by destPublicIpAddress_s, sec = bin(TimeGenerated, 1s), sourcePublicIpAddress_s\n| summarize maxPPS = max(PPS) by destPublicIpAddress_s, sourcePublicIpAddress_s\n| order by destPublicIpAddress_s, maxPPS desc\n| where maxPPS > 10000\n",
"queryFrequency": "PT2H",
"queryPeriod": "PT2H",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Impact"
],
"techniques": [
"T1498"
],
"alertRuleTemplateName": "6e76fd9d-8104-41eb-bad3-26054a3ad5f0",
"eventGroupingSettings": {
"aggregationKind": "SingleAlert"
},
"customDetails": null,
"entityMappings": [
{
"fieldMappings": [
{
"columnName": "sourcePublicIpAddress_s",
"identifier": "Address"
}
],
"entityType": "IP"
}
],
"status": "Available",
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure DDoS Protection/Analytic Rules/AttackSourcesPPSThreshold.yaml",
"templateVersion": "1.0.1"
}
}
]
}