Question 1mediummultiple choice
Full question →- A
7045
Service installation event.
- B
4624
Why wrong: Successful logon.
- C
4648
Why wrong: Explicit credential logon attempt.
- D
4720
Why wrong: User account creation.
Question 534 of 1,000
Quick Answer
The answer is Windows Event ID 7045. This event is the correct indicator because it specifically logs every time a new service is installed on a Windows system, including the service name, binary path, and account used—details that attackers leveraging a web shell for command execution often need to establish persistence. On the Computer Hacking Forensic Investigator CHFI exam, this question tests your ability to correlate post-exploitation activity with forensic evidence; a common trap is confusing 7045 with event ID 7036 (service state change) or 4697 (security audit log for service installation, which requires advanced auditing policies). Remember that 7045 fires by default in the System log, making it a reliable first stop for detecting unauthorized service creation. For a memory tip, think "7045 = Service Arrival" to recall that a new service has just arrived on the system.
CHFI OS and Network Forensics Practice Question
This CHFI practice question tests your understanding of os and network 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.
An analyst suspects that an attacker used a web shell to execute commands on a Windows web server. Which Windows event ID should the analyst look for to detect service installation that may have been used for persistence?
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
✓
7045
Event ID 7045 indicates a service was installed on the system, which attackers often use to maintain persistence.
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.
- ✓
7045
Why this is correct
Service installation event.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
4624
Why it's wrong here
Successful logon.
- ✗
4648
Why it's wrong here
Explicit credential logon attempt.
- ✗
4720
Why it's wrong here
User account creation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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.
What to study next
Got this wrong? Here's your next step.
Identify which CHFI exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Questions learners often ask
What does this CHFI question test?
OS and Network Forensics — This question tests OS and Network Forensics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 7045 — Event ID 7045 indicates a service was installed on the system, which attackers often use to maintain persistence.
What should I do if I get this CHFI question wrong?
Identify which CHFI exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 21, 2026
This CHFI 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 CHFI exam.
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