MS-102 EmailEvents Practice Question
A security analyst is creating a custom detection rule in Microsoft 365 Defender Advanced Hunting. The rule should detect when a user receives a malicious email attachment and then opens the attachment, resulting in a process being created (e.g., .exe file). Which two Advanced Hunting tables must be joined to correlate the email attachment with the resulting process?
⚠ Common exam trap
The trap is that candidates may think any email-to-process correlation works, but only EmailAttachmentInfo provides the direct link via file hash to the executed process. EmailEvents lacks attachment details, so Option A is insufficient.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
EmailAttachmentInfo and DeviceProcessEvents
Only option B (EmailAttachmentInfo and DeviceProcessEvents) is valid for directly correlating the email attachment with the resulting process. EmailAttachmentInfo contains attachment-specific details like file hash and name, which can be joined with the SHA256 hash or file name in DeviceProcessEvents to track execution. Option A joins EmailEvents with DeviceProcessEvents, but EmailEvents lacks attachment details, making it impossible to directly link the attachment to the executed process.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
EmailEvents and DeviceProcessEvents
Why it's wrong here
Incorrect. EmailEvents does not contain attachment-specific information such as file hash or name. While you can perform a temporal join using timestamps and user/device IDs, this does not directly correlate the attachment with the process; it only connects an email event to a process event without proving the process came from the attachment.
- ✓
EmailAttachmentInfo and DeviceProcessEvents
Why this is correct
Correct. EmailAttachmentInfo provides attachment file hash, name, and other details. This can be joined with DeviceProcessEvents on fields like SHA256 or FileName to directly identify the process created when the attachment was opened.
- ✗
EmailAttachmentInfo and DeviceFileEvents
Why it's wrong here
DeviceFileEvents tracks file system activities, but the process creation is recorded in DeviceProcessEvents, not DeviceFileEvents.
- ✗
DeviceProcessEvents and IdentityLogonEvents
Why it's wrong here
IdentityLogonEvents are for user logon, not email attachment or process correlation.
Go deeper
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Microsoft 365 Tenant Setup
Key term
Microsoft 365
Microsoft 365 is a subscription-based cloud service from Microsoft that combines productivity tools like Office apps with security, device management, and online storage.
Key term
Security
Security in IT is the practice of protecting systems, networks, and data from unauthorized access, damage, or theft.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This MS-102 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MS-102 exam.