The answer is using the `attrib +h +s` command to hide files on Windows. This technique is most effective because it sets both the hidden and system file attributes, which by default causes Windows Explorer and the standard `dir` command to omit the file from directory listings, making it invisible to casual inspection without requiring any third-party tools. On the Certified Ethical Hacker CEH exam, this scenario tests your knowledge of native Windows system hacking techniques for file concealment during the post-exploitation phase, often appearing as a distractor against more advanced methods like NTFS streams or registry manipulation. A common trap is forgetting that enabling "Show hidden files" in Folder Options still won't reveal system files unless the user also unchecks "Hide protected operating system files," so the `+s` attribute provides an extra layer of stealth. Memory tip: think "HS" for "Hide System" — a quick way to recall that both flags are needed for maximum concealment.
CEH Enumeration and System Hacking Practice Question
This CEH practice question tests your understanding of enumeration and system hacking. 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 system hacking phase, a tester successfully gains access to a Windows machine and wants to hide a malicious executable. Which of the following techniques is MOST effective for hiding files from standard directory listings without using third-party tools?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use the `attrib +h +s` command to set hidden and system attributes
The `attrib +h +s` command sets both the hidden and system file attributes, which by default causes Windows Explorer and standard `dir` commands to omit the file from directory listings. This is a built-in, native technique that requires no third-party tools and is effective for basic concealment from casual inspection.
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.
✓
Use the `attrib +h +s` command to set hidden and system attributes
Why this is correct
This hides the file from `dir` without /a flags, making it effectively invisible to most users.
Related concept
Read the scenario before looking for a memorised answer.
✗
Rename the file to a system filename like svchost.exe and place it in C:\Windows\System32
Why it's wrong here
Renaming may evade casual detection but the file will still appear in listings; attrib is more effective.
✗
Encrypt the file using EFS
Why it's wrong here
Encryption protects content but does not hide the file from directory listings.
✗
Store the executable in an Alternate Data Stream (ADS)
Why it's wrong here
ADS is best for hiding data, not executables; running from ADS requires special handling.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may overthink and choose ADS (Option D) as a more 'advanced' hiding technique, but the question explicitly requires no third-party tools and ADS creation typically requires additional commands or tools, whereas `attrib` is a simple, built-in command that directly achieves the goal.
Detailed technical explanation
How to think about this question
The `attrib` command modifies file attributes stored in the Master File Table (MFT) on NTFS volumes. The hidden (`+h`) attribute tells the file system to exclude the file from most directory enumeration APIs, while the system (`+s`) attribute marks it as a critical OS file, further hiding it from default Explorer views. This technique is often used by malware to persist without immediate detection, though it can be bypassed by enabling 'Show hidden files' and unchecking 'Hide protected operating system files' in Folder Options.
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 small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CEH question in full detail.
Enumeration and System Hacking — This question tests Enumeration and System Hacking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use the `attrib +h +s` command to set hidden and system attributes — The `attrib +h +s` command sets both the hidden and system file attributes, which by default causes Windows Explorer and standard `dir` commands to omit the file from directory listings. This is a built-in, native technique that requires no third-party tools and is effective for basic concealment from casual inspection.
What should I do if I get this CEH 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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