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MediumMicrosoft Sentinel analyticsMicrosoft Security Research

Silk Typhoon New UM Service Child Process

This query looks for new processes being spawned by the Exchange UM service where that process has not previously been observed before. Reference:…

Description

This query looks for new processes being spawned by the Exchange UM service where that process has not previously been observed before. Reference: https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/

Detection logic

Detection requirements

Platform
ContainersESXiIaaSLinuxmacOSNetwork DevicesWindows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source product
securityeventswindowsforwardedeventswindowssecurityevents
Log source service
securityeventwindowsevent

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