Exchange PowerShell Snap-Ins Usage

Detects adding and using Exchange PowerShell snap-ins to export mailbox data. As seen used by HAFNIUM and APT27

Detection logic

Platform: Linux macOS Office Suite Windows
The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.
Log source product: windows
Log source category: process_creation

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
www.intrinsec.com/apt27-analysis/	Unclassified	Only this detection cites it
www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/	Threat report	3from 2 sources
www.volexity.com/blog/2021/03/02/active-exploitation-of-microsoft-exchange-zero-day-vulnerabilities/	Threat report	3from 2 sources