Microsoft Sentinel Analytic Rules
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ProofpointPOD - High risk message not discarded

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Idc7cd6073-6d2c-4284-a5c8-da27605bdfde
RulenameProofpointPOD - High risk message not discarded
DescriptionDetects when email with high risk score was not rejected or discarded by filters.
SeverityLow
TacticsInitialAccess
TechniquesT1566
Required data connectorsProofpointPOD
KindScheduled
Query frequency10m
Query period10m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Proofpoint On demand(POD) Email Security/Analytic Rules/ProofpointPODHighRiskNotDiscarded.yaml
Version1.0.1
Arm templatec7cd6073-6d2c-4284-a5c8-da27605bdfde.json
Deploy To Azure
let lbtime = 10m;
ProofpointPOD
| where TimeGenerated > ago(lbtime)
| where EventType == 'message'
| where NetworkDirection == 'inbound'
| where FilterDisposition !in ('reject', 'discard')
| where FilterModulesSpamScoresOverall == '100'
| project SrcUserUpn, DstUserUpn
| extend AccountCustomEntity = SrcUserUpn
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Proofpoint On demand(POD) Email Security/Analytic Rules/ProofpointPODHighRiskNotDiscarded.yaml
query: |
  let lbtime = 10m;
  ProofpointPOD
  | where TimeGenerated > ago(lbtime)
  | where EventType == 'message'
  | where NetworkDirection == 'inbound'
  | where FilterDisposition !in ('reject', 'discard')
  | where FilterModulesSpamScoresOverall == '100'
  | project SrcUserUpn, DstUserUpn
  | extend AccountCustomEntity = SrcUserUpn  
description: |
    'Detects when email with high risk score was not rejected or discarded by filters.'
severity: Low
requiredDataConnectors:
- dataTypes:
  - ProofpointPOD_message_CL
  connectorId: ProofpointPOD
name: ProofpointPOD - High risk message not discarded
triggerThreshold: 0
tactics:
- InitialAccess
version: 1.0.1
relevantTechniques:
- T1566
triggerOperator: gt
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountCustomEntity
    identifier: FullName
id: c7cd6073-6d2c-4284-a5c8-da27605bdfde
status: Available
kind: Scheduled
queryFrequency: 10m
queryPeriod: 10m
{
  "$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/c7cd6073-6d2c-4284-a5c8-da27605bdfde')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/c7cd6073-6d2c-4284-a5c8-da27605bdfde')]",
      "properties": {
        "alertRuleTemplateName": "c7cd6073-6d2c-4284-a5c8-da27605bdfde",
        "customDetails": null,
        "description": "'Detects when email with high risk score was not rejected or discarded by filters.'\n",
        "displayName": "ProofpointPOD - High risk message not discarded",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "FullName"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Proofpoint On demand(POD) Email Security/Analytic Rules/ProofpointPODHighRiskNotDiscarded.yaml",
        "query": "let lbtime = 10m;\nProofpointPOD\n| where TimeGenerated > ago(lbtime)\n| where EventType == 'message'\n| where NetworkDirection == 'inbound'\n| where FilterDisposition !in ('reject', 'discard')\n| where FilterModulesSpamScoresOverall == '100'\n| project SrcUserUpn, DstUserUpn\n| extend AccountCustomEntity = SrcUserUpn\n",
        "queryFrequency": "PT10M",
        "queryPeriod": "PT10M",
        "severity": "Low",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1566"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}