The correct answer is services.exe listening on TCP port 4444, as this is a classic indicator of malware persistence via code injection. Under normal operation, services.exe—the Service Control Manager—should never open a listening TCP port; when it does, especially on port 4444, a port commonly used by Metasploit reverse shells, it strongly suggests that malicious code has been injected into the legitimate process, often through techniques like process hollowing or reflective DLL injection, to establish a persistent backdoor. On the CHFI exam, this scenario tests your ability to distinguish between a trusted system process and one that has been hijacked for persistence, a common trap being that students overlook services.exe because it is a default Windows process. Remember the key forensic principle: any system process unexpectedly listening on a network port is a red flag for code injection. A useful memory tip is “SCM never listens—port 4444 means infection.”
CHFI Malware Forensics Practice Question
This CHFI practice question tests your understanding of 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.
Based on the exhibit, what is the most likely indication of malware persistence?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
services.exe is listening on TCP port 4444, indicating possible code injection
Option C is correct because services.exe (the Service Control Manager) should not normally listen on any TCP port. When it is found listening on TCP port 4444—a port commonly associated with Metasploit and reverse shells—it strongly indicates that malware has injected code into the legitimate services.exe process, hijacking it to establish a persistent backdoor listener. This is a classic sign of process hollowing or reflective DLL injection, where the malware hides its network activity under a trusted system process.
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.
✗
services.exe PID 4321 is a known malware process
Why it's wrong here
services.exe is a legitimate system process; it's not inherently malware.
✗
Windows Defender service is stopped, allowing malware to run
Why it's wrong here
The exhibit shows Windows Defender is running (STATE: 4 RUNNING).
✓
services.exe is listening on TCP port 4444, indicating possible code injection
Why this is correct
services.exe should not have open listening ports; port 4444 is suspicious and suggests malware injected into the process.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
svchost.exe hosting BFE and MpsSvc indicates a firewall bypass
Why it's wrong here
BFE (Base Filtering Engine) and MpsSvc (Windows Firewall) are normal services.
Common exam traps
Common exam trap: answer the scenario, not the keyword
EC-Council often tests the misconception that any process named 'services.exe' or 'svchost.exe' is automatically malicious, when in fact the key indicator is abnormal behavior (like listening on a non-standard port) that deviates from the process's legitimate function.
Trap categories for this question
Command / output trap
The exhibit shows Windows Defender is running (STATE: 4 RUNNING).
Detailed technical explanation
How to think about this question
Under the hood, services.exe is the Service Control Manager (SCM) that manages Windows services and does not inherently listen on any network ports. When malware injects code into services.exe, it can use Windows API calls like CreateRemoteThread or SetWindowsHookEx to run a reverse shell listener on an arbitrary port (e.g., 4444). In real-world forensics, this is often detected by comparing the process's expected network behavior (none) against actual listening ports using tools like netstat -ano or Sysinternals TCPView, and by checking for anomalies in the process's loaded modules (e.g., a DLL not signed by Microsoft).
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.
Malware Forensics — This question tests Malware Forensics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: services.exe is listening on TCP port 4444, indicating possible code injection — Option C is correct because services.exe (the Service Control Manager) should not normally listen on any TCP port. When it is found listening on TCP port 4444—a port commonly associated with Metasploit and reverse shells—it strongly indicates that malware has injected code into the legitimate services.exe process, hijacking it to establish a persistent backdoor listener. This is a classic sign of process hollowing or reflective DLL injection, where the malware hides its network activity under a trusted system process.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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