CHFI Mobile and Malware Forensics Practice Question
This CHFI practice question tests your understanding of mobile and malware forensics. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
During a malware analysis session, an analyst uses Process Monitor (Procmon) to observe a suspicious executable. Which of the following behavioral indicators would MOST strongly suggest the malware is attempting to establish persistence?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Writing to HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Writing to HKCU\Software\Microsoft\Windows\CurrentVersion\Run is a classic persistence mechanism because Windows automatically launches programs listed in this registry key at user logon. Process Monitor capturing a write to this key directly indicates the malware is configuring itself to run on startup, which is the strongest evidence of persistence among the options.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Making outbound TCP connections to an IP address
Why it's wrong here
This indicates command and control communication, not persistence.
✗
Creating a named mutex
Why it's wrong here
Mutexes are often used to ensure only one instance runs, not for persistence.
✓
Writing to HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Why this is correct
This registry key is used to run programs at user logon, a classic persistence technique.
Related concept
Read the scenario before looking for a memorised answer.
✗
Creating files in the %TEMP% directory
Why it's wrong here
This is common for extraction but not persistence.
Common exam traps
Common exam trap: answer the scenario, not the keyword
EC-Council often tests the distinction between runtime indicators (network connections, mutexes, temp files) and persistence mechanisms (registry Run keys, scheduled tasks, startup folders), so candidates mistakenly pick outbound connections or mutexes as persistence when they are not.
Trap categories for this question
Command / output trap
This indicates command and control communication, not persistence.
Detailed technical explanation
How to think about this question
The Run registry key is processed by the Windows Shell (Explorer.exe) during user logon; values under it can point to an executable path or a command line. Malware often uses this key because it requires no elevated privileges (HKCU is user-writable) and survives reboots. In real-world forensics, analysts correlate Procmon registry writes with Autoruns to confirm persistence and identify the exact command line used.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CHFI exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CHFI question in full detail.
Mobile and Malware Forensics — This question tests Mobile and Malware Forensics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Writing to HKCU\Software\Microsoft\Windows\CurrentVersion\Run — Writing to HKCU\Software\Microsoft\Windows\CurrentVersion\Run is a classic persistence mechanism because Windows automatically launches programs listed in this registry key at user logon. Process Monitor capturing a write to this key directly indicates the malware is configuring itself to run on startup, which is the strongest evidence of persistence among the options.
What should I do if I get this CHFI question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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