Cisco WSA - Suspected protocol abuse
Id | 6f756792-4888-48a5-97cf-40d9430dc932 |
Rulename | Cisco WSA - Suspected protocol abuse |
Description | Detects possible protocol abuse. |
Severity | Medium |
Tactics | Exfiltration |
Techniques | T1048 |
Required data connectors | CiscoWSA SyslogAma |
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/CiscoWSA/Analytic Rules/CiscoWSAProtocolAbuse.yaml |
Version | 1.0.1 |
Arm template | 6f756792-4888-48a5-97cf-40d9430dc932.json |
CiscoWSAEvent
| where DstPortNumber !in ('80', '443')
| where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')
| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = SrcUserName
name: Cisco WSA - Suspected protocol abuse
version: 1.0.1
severity: Medium
queryFrequency: 1h
triggerOperator: gt
relevantTechniques:
- T1048
status: Available
description: |
'Detects possible protocol abuse.'
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoWSA/Analytic Rules/CiscoWSAProtocolAbuse.yaml
requiredDataConnectors:
- connectorId: CiscoWSA
dataTypes:
- CiscoWSAEvent
- connectorId: SyslogAma
datatypes:
- Syslog
entityMappings:
- fieldMappings:
- identifier: Address
columnName: IPCustomEntity
entityType: IP
- fieldMappings:
- identifier: Name
columnName: AccountCustomEntity
entityType: Account
tactics:
- Exfiltration
queryPeriod: 1h
query: |
CiscoWSAEvent
| where DstPortNumber !in ('80', '443')
| where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')
| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = SrcUserName
kind: Scheduled
triggerThreshold: 0
id: 6f756792-4888-48a5-97cf-40d9430dc932
{
"$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/6f756792-4888-48a5-97cf-40d9430dc932')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/6f756792-4888-48a5-97cf-40d9430dc932')]",
"properties": {
"alertRuleTemplateName": "6f756792-4888-48a5-97cf-40d9430dc932",
"customDetails": null,
"description": "'Detects possible protocol abuse.'\n",
"displayName": "Cisco WSA - Suspected protocol abuse",
"enabled": true,
"entityMappings": [
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "IPCustomEntity",
"identifier": "Address"
}
]
},
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "AccountCustomEntity",
"identifier": "Name"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoWSA/Analytic Rules/CiscoWSAProtocolAbuse.yaml",
"query": "CiscoWSAEvent\n| where DstPortNumber !in ('80', '443')\n| where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')\n| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = SrcUserName\n",
"queryFrequency": "PT1H",
"queryPeriod": "PT1H",
"severity": "Medium",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Exfiltration"
],
"techniques": [
"T1048"
],
"templateVersion": "1.0.1",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}