GuardDuty detector disabled or suspended

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Id	9da99021-d318-4711-a78a-6dea76129b3a
Rulename	GuardDuty detector disabled or suspended
Description	GuardDuty Detector was disabled or suspended, possibly by an attacker trying to avoid detection of its malicious activities. Verify with the user identity that this activity is legitimate.
Severity	High
Tactics	DefenseEvasion
Techniques	T1562
Required data connectors	AWS
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_GuardDutyDisabled.yaml
Version	1.0.0
Arm template	9da99021-d318-4711-a78a-6dea76129b3a.json

KQL

AWSCloudTrail
| where (EventName == "DeleteDetector" and isempty(ErrorCode) and isempty( ErrorMessage)) or (EventName == "UpdateDetector" and tostring(parse_json(RequestParameters).enable) == "false" and isempty(ErrorCode) and isempty( ErrorMessage))
| extend UserIdentityUserName = iff(isnotempty(UserIdentityUserName), UserIdentityUserName, tostring(split(UserIdentityArn,'/')[-1]))
| extend timestamp = TimeGenerated, IPCustomEntity = SourceIpAddress, AccountCustomEntity = UserIdentityUserName

YAML

kind: Scheduled
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_GuardDutyDisabled.yaml
severity: High
name: GuardDuty detector disabled or suspended
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountCustomEntity
    identifier: FullName
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
relevantTechniques:
- T1562
queryFrequency: 1d
triggerThreshold: 0
queryPeriod: 1d
description: |
    'GuardDuty Detector was disabled or suspended, possibly by an attacker trying to avoid detection of its malicious activities. Verify with the user identity that this activity is legitimate.'
id: 9da99021-d318-4711-a78a-6dea76129b3a
version: 1.0.0
tactics:
- DefenseEvasion
query: |
  AWSCloudTrail
  | where (EventName == "DeleteDetector" and isempty(ErrorCode) and isempty( ErrorMessage)) or (EventName == "UpdateDetector" and tostring(parse_json(RequestParameters).enable) == "false" and isempty(ErrorCode) and isempty( ErrorMessage))
  | extend UserIdentityUserName = iff(isnotempty(UserIdentityUserName), UserIdentityUserName, tostring(split(UserIdentityArn,'/')[-1]))
  | extend timestamp = TimeGenerated, IPCustomEntity = SourceIpAddress, AccountCustomEntity = UserIdentityUserName  
status: Available
requiredDataConnectors:
- dataTypes:
  - AWSCloudTrail
  connectorId: AWS
triggerOperator: gt

ARM

{
  "$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/9da99021-d318-4711-a78a-6dea76129b3a')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/9da99021-d318-4711-a78a-6dea76129b3a')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01-preview",
      "properties": {
        "displayName": "GuardDuty detector disabled or suspended",
        "description": "'GuardDuty Detector was disabled or suspended, possibly by an attacker trying to avoid detection of its malicious activities. Verify with the user identity that this activity is legitimate.'\n",
        "severity": "High",
        "enabled": true,
        "query": "AWSCloudTrail\n| where (EventName == \"DeleteDetector\" and isempty(ErrorCode) and isempty( ErrorMessage)) or (EventName == \"UpdateDetector\" and tostring(parse_json(RequestParameters).enable) == \"false\" and isempty(ErrorCode) and isempty( ErrorMessage))\n| extend UserIdentityUserName = iff(isnotempty(UserIdentityUserName), UserIdentityUserName, tostring(split(UserIdentityArn,'/')[-1]))\n| extend timestamp = TimeGenerated, IPCustomEntity = SourceIpAddress, AccountCustomEntity = UserIdentityUserName\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion"
        ],
        "techniques": [
          "T1562"
        ],
        "alertRuleTemplateName": "9da99021-d318-4711-a78a-6dea76129b3a",
        "customDetails": null,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "identifier": "FullName",
                "columnName": "AccountCustomEntity"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "identifier": "Address",
                "columnName": "IPCustomEntity"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_GuardDutyDisabled.yaml",
        "status": "Available",
        "templateVersion": "1.0.0"
      }
    }
  ]
}