Acronis - Login from Abnormal IP - Low Occurrence

CommonSecurityLog
| where DeviceVendor == "Acronis audit"
| extend initiator_ip = tostring(parse_json(DeviceCustomString1).initiator_ip)
| summarize LoginCount = count() by initiator_ip
| where LoginCount <= 2
| order by LoginCount asc

entityMappings:
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: initiator_ip
name: Acronis - Login from Abnormal IP - Low Occurrence
kind: Scheduled
queryFrequency: 1d
triggerOperator: gt
queryPeriod: 14d
requiredDataConnectors: []
tactics:
- InitialAccess
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Acronis%20Cyber%20Protect%20Cloud/Analytic%20Rules/AcronisLoginFromAbnormalIPLowOccurrence.yaml
description: Suspicious login from an IP address observed up to two times in the last two weeks.
severity: Medium
incidentConfiguration:
  groupingConfiguration:
    lookbackDuration: P7D
    groupByEntities:
    - IP
    enabled: true
    matchingMethod: Selected
    reopenClosedIncident: true
  createIncident: true
id: 84037130-a623-46c2-9144-0c0955ac4112
eventGroupingSettings:
  aggregationKind: AlertPerResult
triggerThreshold: 0
query: |
  CommonSecurityLog
  | where DeviceVendor == "Acronis audit"
  | extend initiator_ip = tostring(parse_json(DeviceCustomString1).initiator_ip)
  | summarize LoginCount = count() by initiator_ip
  | where LoginCount <= 2
  | order by LoginCount asc
alertDetailsOverride:
  alertDynamicProperties: []
  alertDisplayNameFormat: Acronis - Login from Abnormal IP ({{initiator_ip}}) - Low Occurrence ({{LoginCount}})
version: 1.0.0
relevantTechniques:
- T1078

{
  "$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/84037130-a623-46c2-9144-0c0955ac4112')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/84037130-a623-46c2-9144-0c0955ac4112')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDisplayNameFormat": "Acronis - Login from Abnormal IP ({{initiator_ip}}) - Low Occurrence ({{LoginCount}})",
          "alertDynamicProperties": []
        },
        "alertRuleTemplateName": "84037130-a623-46c2-9144-0c0955ac4112",
        "customDetails": null,
        "description": "Suspicious login from an IP address observed up to two times in the last two weeks.",
        "displayName": "Acronis - Login from Abnormal IP - Low Occurrence",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "initiator_ip",
                "identifier": "Address"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "groupByEntities": [
              "IP"
            ],
            "lookbackDuration": "P7D",
            "matchingMethod": "Selected",
            "reopenClosedIncident": true
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Acronis%20Cyber%20Protect%20Cloud/Analytic%20Rules/AcronisLoginFromAbnormalIPLowOccurrence.yaml",
        "query": "CommonSecurityLog\n| where DeviceVendor == \"Acronis audit\"\n| extend initiator_ip = tostring(parse_json(DeviceCustomString1).initiator_ip)\n| summarize LoginCount = count() by initiator_ip\n| where LoginCount <= 2\n| order by LoginCount asc\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1078"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}