持久化：向外部 AI 代理授予敏感角色

本文档介绍了 Security Command Center 中的一种威胁发现结果类型。当威胁检测器在您的云资源中检测到潜在威胁时，会生成威胁发现结果。如需查看可用威胁发现结果的完整列表，请参阅威胁发现结果索引。

概览

外部组织的 AI 智能体被授予了敏感 IAM 角色。对于中等敏感度的角色，发现结果的严重程度分类为中 ；对于高敏感度的角色，发现结果的严重程度分类为高 。如需了解详情，请参阅 敏感 IAM 角色和权限（适用于 AI）。

Event Threat Detection 是此发现结果的来源。

如何应答

如需响应此发现结果，请执行以下操作：

第 1 步：查看发现结果详情

  1. 按照 查看发现结果中所述，打开 Persistence: Sensitive Role Granted to External AI Agent 发现结果。系统会打开发现结果详细信息面板，以显示摘要 标签页。

  2. 在摘要标签页上，查看以下部分中的信息：

    • 检测到的内容，尤其是以下字段：
      • 主账号邮件：分配了角色的用户或服务帐号的邮箱。
      • 违规访问授权：添加的敏感角色的详细信息。

    • 受影响的资源

    • 相关链接，尤其是以下字段：

      • Cloud Logging URI：指向 Logging 条目的链接。
      • MITRE ATT&CK 方法：指向 MITRE ATT&CK 文档的链接。

第 2 步：检查日志

  1. 在发现结果详细信息面板的“摘要”标签页上，点击 Cloud Logging URI 链接以打开 Logs Explorer。
  2. 在加载的页面上，使用以下过滤条件查找新的或更新后的 IAM 资源：
    • protoPayload.methodName="SetIamPolicy"

第 3 步：研究攻击和响应方法

  1. 查看此发现结果类型的 MITRE ATT&CK 框架条目： 有效账号：云账号。
  2. 如需制定响应方案，请将您的调查结果与 MITRE 研究相结合。

第 4 步：实现响应

以下响应方案可能适合此发现结果，但也可能会影响运营。 请仔细评估您在研究中收集的信息，以确定解析发现结果的最佳方法。

  • 与账号被盗用的项目的所有者联系。
  • 删除被盗用的服务账号，然后轮替和删除被破解的项目的所有服务账号访问密钥。删除后，使用该服务账号进行身份验证的资源会失去访问权限。
  • 删除未经授权的账号创建的项目资源，例如不熟悉的 Compute Engine 实例、快照、服务账号和 IAM 用户。
  • 如需限制添加外部用户，请使用组织政策。

发现结果 JSON 示例

以下是发现结果 JSON 的示例，其中省略了默认值。

{
  "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 Role Granted to External AI Agent",
    "securityMarks": {
      "name": "organizations/ORGANIZATION_ID/sources/SOURCE_ID/locations/global/findings/FINDING_ID/securityMarks"
    },
    "eventTime": "TIMESTAMP",
    "createTime": "TIMESTAMP",
    "severity": "HIGH",
    "canonicalName": "projects/PROJECT_NUMBER/sources/SOURCE_ID/locations/global/findings/FINDING_ID",
    "findingClass": "THREAT",
    "access": {
      "principalEmail": "PRINCIPAL_EMAIL",
      "userAgent": "USER_AGENT",
      "serviceName": "cloudresourcemanager.googleapis.com",
      "methodName": "SetIamPolicy",
      "principalSubject": "user:PRINCIPAL_EMAIL"
    },
    "mitreAttack": {
      "primaryTactic": "PERSISTENCE",
      "primaryTechniques": [
        "ACCOUNT_MANIPULATION"
      ],
      "additionalTactics": [
        "PRIVILEGE_ESCALATION"
      ],
      "additionalTechniques": [
        "ADDITIONAL_CLOUD_ROLES"
      ]
    },
    "iamBindings": [
      {
        "action": "ADD",
        "role": "roles/editor",
        "member": "principalSet://agents-nonprod.global.org-PROJECT_NUMBER.system.id.goog/*"
      },
      {
        "action": "ADD",
        "role": "roles/editor",
        "member": "principalSet://agents.global.org-PROJECT_NUMBER.system.id.goog/*"
      }
    ],
    "parentDisplayName": "Event Threat Detection",
    "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",
    "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": "external_ai_agent_granted_sensitive_role"
    },
    "detectionPriority": "HIGH",
    "affectedResources": [
      {
        "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/T1078/003"
      },
      "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"
      }
    ]
  }
}

后续步骤