PaloAlto - Possible flooding
Id | feb185cc-51f4-11ec-bf63-0242ac130002 |
Rulename | PaloAlto - Possible flooding |
Description | Detects possible flooding. |
Severity | Medium |
Tactics | InitialAccess |
Techniques | T1190 T1133 |
Required data connectors | PaloAltoCDL PaloAltoCDLAma |
Kind | Scheduled |
Query frequency | 1h |
Query period | 1h |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PaloAltoCDL/Analytic Rules/PaloAltoCDLPossibleFlooding.yaml |
Version | 1.0.2 |
Arm template | feb185cc-51f4-11ec-bf63-0242ac130002.json |
PaloAltoCDLEvent
| where EventResourceId =~ 'TRAFFIC'
| where isnotempty(NetworkSessionId)
| where DstBytes == 0 and tolong(NetworkPackets) > 0
| extend AccountCustomEntity = DstUsername, IPCustomEntity = SrcIpAddr
kind: Scheduled
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PaloAltoCDL/Analytic Rules/PaloAltoCDLPossibleFlooding.yaml
severity: Medium
name: PaloAlto - Possible flooding
entityMappings:
- entityType: Account
fieldMappings:
- columnName: AccountCustomEntity
identifier: Name
- entityType: IP
fieldMappings:
- columnName: IPCustomEntity
identifier: Address
relevantTechniques:
- T1190
- T1133
queryFrequency: 1h
triggerThreshold: 0
queryPeriod: 1h
description: |
'Detects possible flooding.'
id: feb185cc-51f4-11ec-bf63-0242ac130002
version: 1.0.2
tactics:
- InitialAccess
query: |
PaloAltoCDLEvent
| where EventResourceId =~ 'TRAFFIC'
| where isnotempty(NetworkSessionId)
| where DstBytes == 0 and tolong(NetworkPackets) > 0
| extend AccountCustomEntity = DstUsername, IPCustomEntity = SrcIpAddr
status: Available
requiredDataConnectors:
- dataTypes:
- PaloAltoCDLEvent
connectorId: PaloAltoCDL
- dataTypes:
- PaloAltoCDLEvent
connectorId: PaloAltoCDLAma
triggerOperator: gt
{
"$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/feb185cc-51f4-11ec-bf63-0242ac130002')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/feb185cc-51f4-11ec-bf63-0242ac130002')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01-preview",
"properties": {
"displayName": "PaloAlto - Possible flooding",
"description": "'Detects possible flooding.'\n",
"severity": "Medium",
"enabled": true,
"query": "PaloAltoCDLEvent\n| where EventResourceId =~ 'TRAFFIC'\n| where isnotempty(NetworkSessionId)\n| where DstBytes == 0 and tolong(NetworkPackets) > 0\n| extend AccountCustomEntity = DstUsername, IPCustomEntity = SrcIpAddr\n",
"queryFrequency": "PT1H",
"queryPeriod": "PT1H",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"InitialAccess"
],
"techniques": [
"T1190",
"T1133"
],
"alertRuleTemplateName": "feb185cc-51f4-11ec-bf63-0242ac130002",
"customDetails": null,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"identifier": "Name",
"columnName": "AccountCustomEntity"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"identifier": "Address",
"columnName": "IPCustomEntity"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PaloAltoCDL/Analytic Rules/PaloAltoCDLPossibleFlooding.yaml",
"status": "Available",
"templateVersion": "1.0.2"
}
}
]
}