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访问安全数据

Defender for IoT 在 Log Analytics 工作区中存储安全警报、建议和原始安全数据(如果选择保存)。

Log Analytics

配置要使用的 Log Analytics 工作区:

  1. 打开 IoT 中心
  2. 选择“安全”部分下的“设置”边栏选项卡。
  3. 选择“数据收集”,并更改 Log Analytics 工作区配置。

要在配置后访问 Log Analytics 工作区中的警报和建议:

  1. 在 Defender for IoT. 中选择警报或建议。
  2. 选择“进一步调查”,然后选择“若要查看哪些设备生成了此警报,请单击此处并查看 DeviceId 列”。

有关从 Log Analytics 查询数据的详细信息,请参阅 Azure Monitor 中的日志查询入门

安全警报

安全警报存储在为 Defender for IoT 解决方案配置的 Log Analytics 工作区中的“AzureSecurityOfThings.SecurityAlert”表中。

我们提供了许多有用的查询来帮助你开始了解安全警报。

示例记录

选择几个随机记录

// Select a few random records
//
SecurityAlert
| project
    TimeGenerated,
    IoTHubId=ResourceId,
    DeviceId=tostring(parse_json(ExtendedProperties)["DeviceId"]),
    AlertSeverity,
    DisplayName,
    Description,
    ExtendedProperties
| take 3
TimeGenerated IoTHubId DeviceId AlertSeverity DisplayName 说明 ExtendedProperties
2018-11-18T18:10:29 /subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 暴力攻击成功 已成功对设备执行暴力攻击 { "Full Source Address": "["10.165.12.18:"]", "User Names": "[""]", "DeviceId": "IoT-Device-Linux" }
2018-11-19T12:40:31 /subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 设备上本地登录成功 检测到成功的设备本地登录 { "Remote Address": "?", "Remote Port": "", "Local Port": "", "Login Shell": "/bin/su", "Login Process Id":"28207", "User Name": "attacker", "DeviceId":"IoT-Device-Linux" }
2018-11-19T12:40:31 /subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 设备上本地登录尝试失败 检测到失败的设备本地登录尝试 { "Remote Address": "?", "Remote Port": "", "Local Port": "", "Login Shell": "/bin/su", "Login Process Id":"22644", "User Name": "attacker", "DeviceId":"IoT-Device-Linux" }

设备摘要

获取在过去一周内检测到的不同安全警报数量,按 IoT 中心、设备、警报严重性和警报类型分组。

// Get the number of distinct security alerts detected in the last week, grouped by
//   IoT hub, device, alert severity, alert type
//
SecurityAlert
| where TimeGenerated > ago(7d)
| summarize Cnt=dcount(SystemAlertId) by
    IoTHubId=ResourceId,
    DeviceId=tostring(parse_json(ExtendedProperties)["DeviceId"]),
    AlertSeverity,
    DisplayName
IoTHubId DeviceId AlertSeverity DisplayName 计数
/subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 暴力攻击成功 9
/subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 设备上本地登录尝试失败 242
/subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 设备上本地登录成功 31
/subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 加密硬币挖掘器 4

IoT 中心摘要

按 IoT 中心、警报严重性、警报类型选择上周有警报的不同设备数量

// Select number of distinct devices which had alerts in the last week, by
//   IoT hub, alert severity, alert type
//
SecurityAlert
| where TimeGenerated > ago(7d)
| extend DeviceId=tostring(parse_json(ExtendedProperties)["DeviceId"])
| summarize CntDevices=dcount(DeviceId) by
    IoTHubId=ResourceId,
    AlertSeverity,
    DisplayName
IoTHubId AlertSeverity DisplayName CntDevices
/subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> 暴力攻击成功 1
/subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> 设备上本地登录尝试失败 1
/subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> 设备上本地登录成功 1
/subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> 加密硬币挖掘器 1

安全建议

安全建议存储在为 Defender for IoT 解决方案配置的 Log Analytics 工作区中的“AzureSecurityOfThings.SecurityRecommendation”表中。

我们提供了许多有用的查询来帮助你开始了解安全建议。

示例记录

选择几个随机记录

// Select a few random records
//
SecurityRecommendation
| project
    TimeGenerated,
    IoTHubId=AssessedResourceId,
    DeviceId,
    RecommendationSeverity,
    RecommendationState,
    RecommendationDisplayName,
    Description,
    RecommendationAdditionalData
| take 2
TimeGenerated IoTHubId DeviceId RecommendationSeverity RecommendationState RecommendationDisplayName 说明 RecommendationAdditionalData
2019-03-22T10:21:06.06 /subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 可用 在输入链中发现了宽松的防火墙规则 在防火墙中发现了包含适用于许多不同 IP 地址或端口的宽松式规则 {"Rules":"[{"SourceAddress":"","SourcePort":"","DestinationAddress":"","DestinationPort":"1337"}]"}
2019-03-22T10:50:27.237 /subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 可用 在输入链中发现了宽松的防火墙规则 在防火墙中发现了包含适用于许多不同 IP 地址或端口的宽松式规则 {"Rules":"[{"SourceAddress":"","SourcePort":"","DestinationAddress":"","DestinationPort":"1337"}]"}

设备摘要

获取不同的活动安全建议的数量,按 IoT 中心、设备、建议严重性和类型分组。

// Get the number of distinct active security recommendations, grouped by
//   IoT hub, device, recommendation severity and type
//
SecurityRecommendation
| extend IoTHubId=AssessedResourceId
| summarize CurrentState=arg_max(RecommendationState, DiscoveredTimeUTC) by IoTHubId, DeviceId, RecommendationSeverity, RecommendationDisplayName
| where CurrentState == "Active"
| summarize Cnt=count() by IoTHubId, DeviceId, RecommendationSeverity
IoTHubId DeviceId RecommendationSeverity 计数
/subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 2
/subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 1
/subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 1
/subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Devices/IotHubs/<iot_hub> <device_name> 中型 4

后续步骤