持續性：敏感 AI 權限新增至自訂角色

本文說明 Security Command Center 中的威脅發現項目類型。威脅偵測工具偵測到雲端資源中可能存在威脅時，就會產生威脅發現項目。如需可用威脅發現項目的完整清單，請參閱威脅發現項目索引。

總覽

敏感 AI 權限已新增至 IAM 自訂角色。敏感 AI 權限是指在 AI 服務中建立、更新或刪除權限。發現項目預設為低嚴重性。

Event Threat Detection 是這項發現項目的來源。

回應方式

如要回應這項發現項目，請按照下列步驟操作：

步驟 1：查看調查結果詳細資料

  1. 按照「查看調查結果」一文的指示，開啟 Persistence: Sensitive AI Permission Added to Custom Role 發現項目。系統會開啟發現項目的詳細資料面板，並顯示「摘要」分頁。

  2. 在「摘要」分頁中，查看下列各節的資訊：

    • 偵測到的內容，尤其是下列欄位：
      • 主體電子郵件地址：指派角色的使用者或服務帳戶的電子郵件地址。

    • 受影響的資源

    • 相關連結，尤其是下列欄位：

      • Cloud Logging URI：記錄項目連結。
      • MITRE ATT&CK 方法：連結至 MITRE ATT&CK 文件。

  3. 按一下「JSON」分頁標籤。畫面上會顯示發現項目的完整 JSON。

  4. 在調查結果的 JSON 中，請注意下列欄位：

    • evidence：
      • sourceLogId：
      • projectId：包含發現項目的專案 ID。

步驟 2：檢查記錄

  1. 在發現項目詳細資料面板的「摘要」分頁中，按一下「Cloud Logging URI」連結，開啟「Logs Explorer」。
  2. 在隨即載入的頁面中，使用下列篩選器尋找新的或更新的 IAM 資源：
    • protoPayload.methodName="google.iam.admin.v1.UpdateRole"
    • protoPayload.methodName="google.iam.admin.v1.CreateRole"
    • protoPayload.methodName="google.iam.admin.v1.PatchRole"

步驟 3：研究攻擊和回應方法

  1. 查看這類發現項目的 MITRE ATT&CK 框架項目： 有效帳戶：雲端帳戶。
  2. 按一下發現項目詳細資料「摘要」分頁中「相關發現項目」列的連結，即可查看相關發現項目。 相關發現項目是指類型相同，且屬於相同執行個體和網路的發現項目。
  3. 如要制定回應計畫，請將調查結果與 MITRE 研究結合。

步驟 4：實作回應

下列應變計畫可能適用於這項發現，但也可能影響作業。 請仔細評估調查期間收集到的資訊，找出解決問題的最佳方式。

  • 請與遭盜用的帳戶的專案擁有者聯絡。
  • 如要找出並修正權限過多的角色，請使用 IAM 建議工具。

發現項目 JSON 範例

以下是發現項目 JSON 的範例，省略了預設值。

{
  "finding": {
    "name": "organizations/ORGANIZATION_ID/sources/SOURCE_ID/locations/global/findings/FINDING_ID",
    "parent": "organizations/ORGANIZATION_ID/sources/SOURCE_ID/locations/global",
    "resourceName": "//cloudresourcemanager.googleapis.com/projects/PROJECT_NUMBER",
    "state": "ACTIVE",
    "category": "Persistence: Sensitive AI Permission Added to Custom Role",
    "securityMarks": {
      "name": "organizations/ORGANIZATION_ID/sources/SOURCE_ID/locations/global/findings/FINDING_ID/securityMarks",
    },
    "eventTime": "TIMESTAMP",
    "createTime": "TIMESTAMP",
    "severity": "LOW",
    "canonicalName": "projects/PROJECT_NUMBER/sources/SOURCE_ID/locations/global/findings/FINDING_ID",
    "findingClass": "THREAT",
    "access": {
      "principalEmail": "EMAIL",
      "callerIp": "IP",
      "callerIpGeo": {
        "regionCode": "REGION"
      },
      "userAgent": "USER_AGENT",
      "serviceName": "iam.googleapis.com",
      "methodName": "METHOD",
      "principalSubject": "serviceAccount:EMAIL",
    },
    "mitreAttack": {
      "primaryTactic": "PERSISTENCE",
      "primaryTechniques": [
        "ACCOUNT_MANIPULATION"
      ],
      "additionalTactics": [
        "PRIVILEGE_ESCALATION"
      ],
      "additionalTechniques": [
        "ADDITIONAL_CLOUD_ROLES"
      ],
    },
    "parentDisplayName": "Event Threat Detection",
    "iamDetails": {
      "iamRolePermissions": [
        {
          "name": "PERMISSION_NAME",
          "role": "projects/PROJECT_ID/roles/ROLE_ID"
        }
      ]
    },
    "domains": [
      {
        "category": "AI"
      },
      {
        "category": "IDENTITY_AND_ACCESS"
      }
    ],
    "logEntries": [
      {
        "cloudLoggingEntry": {
          "insertId": "INSERT_ID",
          "logId": "cloudaudit.googleapis.com/activity",
          "resourceContainer": "projects/PROJECT_ID",
          "timestamp": "TIMESTAMP"
        }
      }
    ],
  },
  "resource": {
    "name": "//cloudresourcemanager.googleapis.com/projects/PROJECT_NUMBER",
    "displayName": "PROJECT_ID",
    "type": "google.cloud.resourcemanager.Project",
    "cloudProvider": "GOOGLE_CLOUD_PLATFORM",
    "service": "cloudresourcemanager.googleapis.com",
    "location": "",
    "gcpMetadata": {
      "project": "//cloudresourcemanager.googleapis.com/projects/PROJECT_NUMBER",
      "projectDisplayName": "PROJECT_ID",
      "parent": "//cloudresourcemanager.googleapis.com/folders/FOLDER_ID",
      "parentDisplayName": "FOLDER_NAME",
      "folders": [
        {
          "resourceFolder": "//cloudresourcemanager.googleapis.com/folders/FOLDER_ID",
          "resourceFolderDisplayName": "FOLDER_NAME"
        }
      ],
      "organization": "organizations/ORGANIZATION_ID"
    },
    "resourcePath": {
      "nodes": [
        {
          "nodeType": "GCP_PROJECT",
          "id": "projects/PROJECT_NUMBER",
          "displayName": "PROJECT_ID"
        },
        {
          "nodeType": "GCP_FOLDER",
          "id": "folders/FOLDER_ID",
          "displayName": "FOLDER_NAME"
        },
        {
          "nodeType": "GCP_ORGANIZATION",
          "id": "organizations/ORGANIZATION_ID",
        }
      ]
    },
    "resourcePathString": "organizations/ORGANIZATION_ID/folders/FOLDER_ID/projects/PROJECT_NUMBER",
  },
  "sourceProperties": {
    "sourceId": {
      "projectNumber": "PROJECT_NUMBER",
      "customerOrganizationNumber": "ORGANIZATION_ID"
    },
    "detectionCategory": {
      "ruleName": "sensitive_ai_permission_added_to_custom_role"
    },
    "detectionPriority": "LOW",
    "affectedResources": [
      {
        "gcpResourceName": "//iam.googleapis.com/projects/PROJECT_ID/roles/ROLE_ID"
      },
      {
        "gcpResourceName": "//cloudresourcemanager.googleapis.com/projects/PROJECT_NUMBER"
      }
    ],
    "evidence": [
      {
        "sourceLogId": {
          "projectId": "PROJECT_ID",
          "resourceContainer": "projects/PROJECT_ID",
          "timestamp": {
            "seconds": "TIMESTAMP_SECONDS",
            "nanos": TIMESTAMP_NANOS
          },
          "insertId": "INSERT_ID",
          "logId": "cloudaudit.googleapis.com/activity"
        }
      }
    ],
    "findingId": "FINDING_ID",
    "contextUris": {
      "mitreUri": {
        "displayName": "MITRE Link",
        "url": "https://attack.mitre.org/techniques/T1098"
      },
      "cloudLoggingQueryUri": [
        {
          "displayName": "Cloud Logging Query Link",
          "url": "https://console.cloud.google.com/logs/query;query=timestamp%3D%22TIMESTAMP%22%0AinsertId%3D%22INSERT_ID%22?project=PROJECT_ID"
        }
      ],
    },
    "domains": [
      {
        "category": "AI"
      },
      {
        "category": "IDENTITY_AND_ACCESS"
      }
    ]
  }
}

後續步驟