312-39 Proactive Threat Detection Practice Question
You are configuring an EDR tool to detect potential credential dumping. Which specific behavioral indicator is most effective at identifying an attacker attempting to access the LSASS process memory?
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
✓
Process access requests to lsass.exe from an unauthorized or unsigned process
Accessing the memory space of lsass.exe is the standard indicator of credential dumping tools like Mimikatz.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Failed login attempts to the local administrator account
Why it's wrong here
This indicates brute force, not memory access for credential dumping.
- ✓
Process access requests to lsass.exe from an unauthorized or unsigned process
Why this is correct
Unauthorized access to lsass.exe memory is a high-fidelity indicator of credential theft.
- ✗
Increased CPU usage on the Domain Controller
Why it's wrong here
CPU spikes are too common and non-specific to identify credential dumping.
- ✗
Modification of registry keys in HKEY_LOCAL_MACHINE\SYSTEM
Why it's wrong here
Registry modification is a persistence technique, not a credential dumping indicator.
About these practice questions
Courseiva writes every 312-39 question from scratch — 201 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official EC-Council exam blueprint
This 312-39 practice question is part of Courseiva's free EC-Council 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 312-39 exam.