Microsoft Exchange Server UM 衍生可疑进程
编辑Microsoft Exchange Server UM 衍生可疑进程
编辑识别 Microsoft Exchange Server 统一消息 (UM) 服务衍生的可疑进程。此活动已被观察到利用 CVE-2021-26857。
规则类型: eql
规则索引:
- logs-endpoint.events.process-*
- winlogbeat-*
- logs-windows.forwarded*
- logs-windows.sysmon_operational-*
- endgame-*
- logs-system.security*
- logs-m365_defender.event-*
- logs-sentinel_one_cloud_funnel.*
- logs-crowdstrike.fdr*
严重性: 中
风险评分: 47
运行频率: 5 分钟
搜索索引起始时间: now-9m (Date Math 格式，另请参阅 额外回溯时间)
每次执行的最大告警数: 100
参考资料:
标签:
- 域: 端点
- 操作系统: Windows
- 用例: 威胁检测
- 策略: 初始访问
- 策略: 横向移动
- 数据源: Elastic Endgame
- 用例: 漏洞
- 数据源: Elastic Defend
- 数据源: 系统
- 数据源: Microsoft Defender for Endpoint
- 数据源: Sysmon
- 数据源: SentinelOne
- 数据源: Crowdstrike
版本: 311
规则作者:
- Elastic
- Austin Songer
规则许可证: Elastic License v2
规则查询
编辑process where host.os.type == "windows" and event.type == "start" and
process.parent.name : ("UMService.exe", "UMWorkerProcess.exe") and
not process.executable : (
"?:\\Windows\\System32\\werfault.exe",
"?:\\Windows\\System32\\wermgr.exe",
"?:\\Program Files\\Microsoft\\Exchange Server\\V??\\Bin\\UMWorkerProcess.exe",
"?:\\Program Files\\Microsoft\\Exchange Server\\Bin\\UMWorkerProcess.exe",
"D:\\Exchange 2016\\Bin\\UMWorkerProcess.exe",
"E:\\ExchangeServer\\Bin\\UMWorkerProcess.exe",
"D:\\Exchange\\Bin\\UMWorkerProcess.exe",
"D:\\Exchange Server\\Bin\\UMWorkerProcess.exe",
"E:\\Exchange Server\\V15\\Bin\\UMWorkerProcess.exe",
"\\Device\\HarddiskVolume?\\Windows\\System32\\werfault.exe",
"\\Device\\HarddiskVolume?\\Windows\\System32\\wermgr.exe",
"\\Device\\HarddiskVolume?\\Program Files\\Microsoft\\Exchange Server\\V??\\Bin\\UMWorkerProcess.exe",
"\\Device\\HarddiskVolume?\\Program Files\\Microsoft\\Exchange Server\\Bin\\UMWorkerProcess.exe",
"\\Device\\HarddiskVolume?\\Exchange 2016\\Bin\\UMWorkerProcess.exe",
"\\Device\\HarddiskVolume?\\ExchangeServer\\Bin\\UMWorkerProcess.exe",
"\\Device\\HarddiskVolume?\\Exchange\\Bin\\UMWorkerProcess.exe",
"\\Device\\HarddiskVolume?\\Exchange Server\\Bin\\UMWorkerProcess.exe",
"\\Device\\HarddiskVolume?\\Exchange Server\\V15\\Bin\\UMWorkerProcess.exe"
)
框架: MITRE ATT&CKTM
-
策略
- 名称: 初始访问
- ID: TA0001
- 参考 URL: https://attack.mitre.org/tactics/TA0001/
-
技术
- 名称: 利用面向公众的应用程序
- ID: T1190
- 参考 URL: https://attack.mitre.org/techniques/T1190/
-
策略
- 名称: 横向移动
- ID: TA0008
- 参考 URL: https://attack.mitre.org/tactics/TA0008/
-
技术
- 名称: 利用远程服务
- ID: T1210
- 参考 URL: https://attack.mitre.org/techniques/T1210/