CyberArkEPM - Uncommon process Internet access

let lb_period = 14d;
let q_time = 1h;
let inet_access_proc = CyberArkEPM
| where TimeGenerated between (ago(lb_period) .. ago(q_time))
| where EventSubType =~ 'DetectAccessInternet'
| where isnotempty(ActingProcessFileInternalName)
| summarize makeset(ActingProcessFileInternalName);
CyberArkEPM
| where TimeGenerated > ago(q_time)
| where EventSubType =~ 'DetectAccessInternet'
| where ActingProcessFileInternalName !in (inet_access_proc)
| extend AccountCustomEntity = ActorUsername

severity: High
relevantTechniques:
- T1204
- T1036
- T1095
queryFrequency: 30m
kind: Scheduled
version: 1.0.0
triggerOperator: gt
description: |
    'Detects access to the Internet by uncommon processes.'
queryPeriod: 30m
id: 9d0d44ab-54dc-472a-9931-53521e888932
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
tactics:
- Execution
- DefenseEvasion
- CommandAndControl
name: CyberArkEPM - Uncommon process Internet access
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CyberArkEPM/Analytic Rules/CyberArkEPMRareProcInternetAccess.yaml
query: |
  let lb_period = 14d;
  let q_time = 1h;
  let inet_access_proc = CyberArkEPM
  | where TimeGenerated between (ago(lb_period) .. ago(q_time))
  | where EventSubType =~ 'DetectAccessInternet'
  | where isnotempty(ActingProcessFileInternalName)
  | summarize makeset(ActingProcessFileInternalName);
  CyberArkEPM
  | where TimeGenerated > ago(q_time)
  | where EventSubType =~ 'DetectAccessInternet'
  | where ActingProcessFileInternalName !in (inet_access_proc)
  | extend AccountCustomEntity = ActorUsername  
requiredDataConnectors:
- dataTypes:
  - CyberArkEPM
  connectorId: CyberArkEPM

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/9d0d44ab-54dc-472a-9931-53521e888932')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/9d0d44ab-54dc-472a-9931-53521e888932')]",
      "properties": {
        "alertRuleTemplateName": "9d0d44ab-54dc-472a-9931-53521e888932",
        "customDetails": null,
        "description": "'Detects access to the Internet by uncommon processes.'\n",
        "displayName": "CyberArkEPM - Uncommon process Internet access",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CyberArkEPM/Analytic Rules/CyberArkEPMRareProcInternetAccess.yaml",
        "query": "let lb_period = 14d;\nlet q_time = 1h;\nlet inet_access_proc = CyberArkEPM\n| where TimeGenerated between (ago(lb_period) .. ago(q_time))\n| where EventSubType =~ 'DetectAccessInternet'\n| where isnotempty(ActingProcessFileInternalName)\n| summarize makeset(ActingProcessFileInternalName);\nCyberArkEPM\n| where TimeGenerated > ago(q_time)\n| where EventSubType =~ 'DetectAccessInternet'\n| where ActingProcessFileInternalName !in (inet_access_proc)\n| extend AccountCustomEntity = ActorUsername\n",
        "queryFrequency": "PT30M",
        "queryPeriod": "PT30M",
        "severity": "High",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl",
          "DefenseEvasion",
          "Execution"
        ],
        "techniques": [
          "T1036",
          "T1095",
          "T1204"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}