Microsoft 365 Defender のサンプル・イベント・メッセージ

"{"time":"2021-07-21T00:57:23.0186119Z","tenantId":"abc12345-123a-123a-456b-abcdefg12345","operationName":"Publish","category":"AdvancedHunting-DeviceEvents","properties":{"AccountSid":null,"AccountDomain":null,"AccountName":null,"LogonId":null,"FileName":null,"FolderPath":null,"MD5":null,"SHA1":null,"FileSize":null,"SHA256":null,"ProcessCreationTime":null,"ProcessTokenElevation":null,"RemoteUrl":null,"RegistryKey":null,"RegistryValueName":null,"RegistryValueData":null,"RemoteDeviceName":null,"FileOriginIP":null,"FileOriginUrl":null,"LocalIP":null,"LocalPort":null,"RemoteIP":null,"RemotePort":null,"ProcessId":null,"ProcessCommandLine":null,"AdditionalFields":"{\"TaskName\":\"\\\\Microsoft\\\\Windows\\\\UpdateOrchestrator\\\\Schedule Maintenance Work\"}","ActionType":"ScheduledTaskUpdated","InitiatingProcessVersionInfoCompanyName":null,"InitiatingProcessVersionInfoProductName":null,"InitiatingProcessVersionInfoProductVersion":null,"InitiatingProcessVersionInfoInternalFileName":null,"InitiatingProcessVersionInfoOriginalFileName":null,"InitiatingProcessVersionInfoFileDescription":null,"InitiatingProcessFolderPath":null,"InitiatingProcessFileName":null,"InitiatingProcessFileSize":null,"InitiatingProcessMD5":null,"InitiatingProcessSHA256":null,"InitiatingProcessSHA1":null,"InitiatingProcessLogonId":999,"InitiatingProcessAccountSid":"S-1-5-18","InitiatingProcessAccountDomain":"m365defender","InitiatingProcessAccountName":"client-pc$","InitiatingProcessAccountUpn":null,"InitiatingProcessAccountObjectId":null,"InitiatingProcessCreationTime":null,"InitiatingProcessId":null,"InitiatingProcessCommandLine":null,"InitiatingProcessParentCreationTime":null,"InitiatingProcessParentId":null,"InitiatingProcessParentFileName":null,"DeviceId":"111122223333444455556666777788889999aaaa","AppGuardContainerId":"","MachineGroup":null,"Timestamp":"2021-07-21T00:55:44.2280946Z","DeviceName":"client-pc.example.net","ReportId":60533}}" );

{"time":"2021-09-09T00:40:17.7066896Z","tenantId":"abc12345-123a-123a-456b-abcdefg12345","operationName":"Publish","category":"AdvancedHunting-AlertInfo","properties":{"AlertId":"da637667448174310467_1631502683","Timestamp":"2021-09-09T00:39:17.1650944Z","Title":"Possible keylogging activity","ServiceSource":"Microsoft Defender for Endpoint","Category":"Collection","Severity":"High","DetectionSource":"EDR","MachineGroup":null,"AttackTechniques":"[\"Input Capture (T1056)\"]"}}

{"AlertTime":"2017-12-27T03:54:41.1914393Z","ComputerDnsName":"<ComputerDnsName>","AlertTitle":"<AlertTitle>","Category":"CommandAndControl","Severity":"<Severity>","AlertId":"<AlertId>","Actor":"<Actor>","LinkToWDATP":"<LinkToWDATP>","IocName":"<IocName>","IocValue":"<IocValue>","CreatorIocName":"<CreatorIocName>","CreatorIocValue":"<CreatorIocValue>","Sha1":"<Sha1>","FileName":"<FileName>","FilePath":"<FilePath>","IpAddress":"192.0.2.0","Url":"<Url>","IoaDefinitionId":"<IoaDefinitionId>","UserName":"qradar1","AlertPart":"<AlertPart>","FullId":"<FullId>","LastProcessedTimeUtc":"2017-12-27T07:16:34.1412283Z","ThreatCategory":"<ThreatCategory>","ThreatFamily":"<ThreatFamily>","ThreatName":"<ThreatName>","RemediationAction":"<RemediationAction>","RemediationIsSuccess":"<RemediationIsSuccess>","Source":"WindowsDefenderAtp","Md5":"<Md5>","Sha256":"<Sha256>","WasExecutingWhileDetected":"<WasExecutingWhileDetected>","UserDomain":"<UserDomain>","LogOnUsers":"<LogOnUsers>","MachineDomain":"<MachineDomain>","MachineName":"<MachineName>","InternalIPv4List":"192.0.2.0;127.0.0.1","InternalIPv6List":"2001:0DB8:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF","FileHash":"<FileHash>","ExternalId":"<ExternalId>","IocUniqueId":"IocUniqueId"}

{"AlertTime":"2017-11-22T18:01:32.1887775Z","ComputerDnsName":"<ComputerDnsName>","AlertTitle":"<AlertTitle>","Category":"Backdoor","Severity":"<Severity>","AlertId":"<AlertId","Actor":"<Actor>","LinkToWDATP":"<LinkToWDATP>","IocName":"<IocName>","IocValue":"<IocValue>","CreatorIocName":"<CreatorIocName>","CreatorIocValue":"<CreatorIocValue>","Sha1":"<Sha1>","FileName":"<FileName>","FilePath":"<FilePath>","IpAddress":"192.0.2.0","Url":"<Url>","IoaDefinitionId":"<IoaDefinitionId>","UserName":"qradar1","AlertPart":"<AlertPart>","FullId":"<FullId>","LastProcessedTimeUtc":"2017-11-22T18:01:49.8739015Z","ThreatCategory":"<ThreatCategory>","ThreatFamily":"<ThreatFamily>","ThreatName":"<ThreatName>","RemediationAction":"<RemediationAction>","RemediationIsSuccess":"<RemediationIsSuccess>","Source":"WindowsDefenderAtp","Md5":"<Md5>","Sha256":"<Sha256>","WasExecutingWhileDetected":"<WasExecutingWhileDetected>","UserDomain":"<UserDomain>","LogOnUsers":"<LogOnUsers>","MachineDomain":"<MachineDomain>","MachineName":"<MachineName>","InternalIPv4List":"192.0.2.0;127.0.0.1","InternalIPv6List":"2001:0DB8:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF","FileHash":"<FileHash>","ExternalId":"<ExternalId>","IocUniqueId":"IocUniqueId"}

サンプル 1： 以下のイベント・メッセージのサンプルは、このデバイスの疑わしいネットワーク・ イベントと近い時間帯に、別のデバイスの横方向の動きが観察されたことを示しています。 これは、データを収集したり特権を昇格させたりするために、攻撃者がデバイス間を横方向に移動しようとしている可能性があることを意味します。 このアラートは、Microsoft Defender のエンドポイント・アラートに基づいてトリガーされました。

{"id":"da637789431774501659_-1621338217","providerAlertId":"da637789431774501659_-1621338217","incidentId":"5","status":"resolved","severity":"medium","classification":null,"determination":null,"serviceSource":"microsoftDefenderForEndpoint","detectionSource":"microsoft365Defender","detectorId":"ab3e5834-3d38-42c5-aaa6-c1cfc6c02882","tenantId":"24d3dca4-61f8-4b86-8e22-612b71d65386","title":"Possible lateral movement","description":"Lateral movement on another device was observed in close time proximity to a suspicious network event on this device. This could mean that an attacker is attempting to move laterally across devices to gather data or elevate privileges. This alert was triggered based on a Microsoft Defender for Endpoint alert.","recommendedActions":"A. Validate the alert.\r\n1. Investigate the process, its behaviors, and the endpoint involved in the original alert for suspicious activity.\r\n2. Check for other suspicious activities in the device timeline.\r\n3. Locate unfamiliar processes in the process tree. Check files for prevalence, their locations, and digital signatures.\r\n4. Submit relevant files for deep analysis and review file behaviors.\r\n5. Identify unusual system activity with system owners.\r\n\r\nB. Scope the incident. Find related device, network addresses, and files in the incident graph.\r\n\r\nC. Contain and mitigate the breach. Stop suspicious processes, isolate affected devices, decommission compromised accounts or reset passwords, block IP addresses and URLs, and install security updates.\r\n\r\nD. Contact your incident response team, or contact Microsoft support for investigation and remediation services.","category":"LateralMovement","assignedTo":"testUser@testUser@example.test","alertWebUrl":"https://security.microsoft.com/alerts/da637789431774501659_-1621338217?tid=24d3dca4-61f8-4b86-8e22-612b71d65386","incidentWebUrl":"https://security.microsoft.com/incidents/5?tid=24d3dca4-61f8-4b86-8e22-612b71d65386","actorDisplayName":null,"threatDisplayName":null,"threatFamilyName":null,"mitreTechniques":["T1570","T1021.002","T1021.003","T1021.004","T1021.006"],"createdDateTime":"2022-01-28T05:06:17.4503018Z","lastUpdateDateTime":"2022-01-28T07:11:29.6933333Z","resolvedDateTime":"2022-01-28T05:21:32.5866667Z","firstActivityDateTime":"2022-01-28T04:53:35.0699463Z","lastActivityDateTime":"2022-01-28T04:53:35.0699463Z","comments":[],"evidence":[{"@odata.type":"#microsoft.graph.security.deviceEvidence","createdDateTime":"2022-01-28T05:06:17.51Z","evidenceRole":"impacted","verdict":"unknown","remediationStatus":"none","remediationStatusDetails":null,"firstSeenDateTime":"2022-01-28T01:15:01.628Z","mdeDeviceId":"12345testmdeDeviceid","azureAdDeviceId":null,"deviceDnsName":"testHost.test","osPlatform":"Windows10","osBuild":17763,"version":"1809","healthStatus":"active","riskScore":"high","rbacGroupId":0,"rbacGroupName":null,"onboardingStatus":"onboarded","defenderAvStatus":"updated","loggedOnUsers":[{"accountName":"testUser","domainName":"MPRTDEV"}]},{"@odata.type":"#microsoft.graph.security.processEvidence","createdDateTime":"2022-01-28T05:06:17.51Z","evidenceRole":"related","verdict":"unknown","remediationStatus":"none","remediationStatusDetails":null,"processId":4,"parentProcessId":0,"processCommandLine":"","processCreationDateTime":"2022-01-28T01:01:49.3539999Z","parentProcessCreationDateTime":null,"detectionStatus":null,"mdeDeviceId":null,"parentProcessImageFile":null,"imageFile":{"sha1":"3791cf139c5f9e5c97e9c091f73e441b6a9bbd30","sha256":"e2f1857de3560a5237ca7ea661fc3688715bbbf6baa483511d49baac4ce1acf9","fileName":"System","filePath":"c:\\windows\\system32\\ntoskrnl.exe","fileSize":null,"filePublisher":null,"signer":null,"issuer":null},"userAccount":{"accountName":"system","domainName":null,"userSid":"S-1-1-1","azureAdUserId":null,"userPrincipalName":null}},{"@odata.type":"#microsoft.graph.security.ipEvidence","createdDateTime":"2022-01-28T05:06:17.51Z","evidenceRole":"related","verdict":"unknown","remediationStatus":"none","remediationStatusDetails":null,"ipAddress":"10.0.0.5"},{"@odata.type":"#microsoft.graph.security.urlEvidence","createdDateTime":"2022-01-28T05:06:17.51Z","evidenceRole":"related","verdict":"unknown","remediationStatus":"none","remediationStatusDetails":null,"url":"mprtdev-win10b"},{"@odata.type":"#microsoft.graph.security.userEvidence","createdDateTime":"2022-01-28T05:06:17.51Z","evidenceRole":"impacted","verdict":"unknown","remediationStatus":"none","remediationStatusDetails":null,"userAccount":{"accountName":null,"domainName":null,"userSid":null,"azureAdUserId":null,"userPrincipalName":null}}]}

サンプル2： 次のイベント・メッセージのサンプルは、サービス・アナウンスを示しています。

{"startDateTime":"2025-03-05T23:57:40Z","endDateTime":"2026-02-02T08:00:00Z","lastModifiedDateTime":"2025-07-24T13:40:22.29Z","title":"(Updated) Microsoft Entra: Browser access will be enabled by default for all Android users","id":"X00000001","category":"planForChange","severity":"normal","tags":["Updated message","Feature update","User impact","Admin impact","Retirement"],"isMajorChange":true,"actionRequiredByDateTime":null,"services":["Microsoft Entra"],"hasAttachments":false,"viewPoint":null,"details":[{"name":"Summary","value":"Microsoft Entra will enable browser access by default for all Android users, retiring the \"Enable Browser Access\" feature in Microsoft Authenticator and Company Portal apps. This hardware-bound device registration change requires no admin action and will roll out automatically worldwide. Organizations not using Android can ignore this update."}],"body":{"contentType":"html","content":"<p>Updated July 24, 2025: We have updated the timeline. Thank you for your patience.</p><p>If your organization does not support Android devices, you can safely ignore this message.\n</p><p>As part of our overall security hardening efforts, we will migrate Microsoft Entra ID device registration to be hardware-bound. Since the device identity will be hardware-bound, we will retire the ability for users to enable a feature called <i>Enable Browser Access </i>(EBA) in the Microsoft Authenticator app and the Microsoft Company Portal app for Android. After this retirement, browser access will automatically be enabled as part of device registration.\n</p><p>[When this will happen:]\n</p><p>General Availability (Worldwide): We will communicate via Message center when we are ready to proceed.</p><p>[What you need to do to prepare:]\n</p><p>No action or preparation is required from admins or users regarding this change. The change will occur automatically.\n</p><p>The <i>Enable Browser Access</i> feature will retire from the Company Portal and Authenticator apps for Android:\n</p><p><img src=\"https://example.com/file/ccp/en-us/5adf2eac-6eb7-45b5-933d-334324a1dc12\" style=\"width: 300px;\" alt=\"user controls\">\n</p><p>This change was first announced in <a href=\"https://example.com/blog/example/whats-new-in-microsoft-entra---september-2024/4253153\" target=\"_blank\">What's new in Microsoft Entra - September 2024 | Microsoft Community Hub</a> (September 2024).\n</p><p>This rollout will happen automatically by the specified date with no admin action required before the rollout. Review your current configuration to determine the impact for your organization. You may want to notify your users about this change and update any relevant documentation.</p>"}}