Quick Answer
The answer is the post-exploitation phase. This is correct because cracking password hashes extracted from a domain controller is an activity that occurs after the tester has already gained initial access to the system, which is the defining characteristic of post-exploitation. During this phase, the tester escalates privileges, extracts credentials, and moves laterally across the network, using tools like John the Ripper or Hashcat to crack NTLM hashes and obtain plaintext passwords for further access. On the Certified Information Systems Security Professional CISSP exam, this question tests your understanding of the penetration testing phases, specifically distinguishing post-exploitation from exploitation or reconnaissance. A common trap is confusing credential cracking with the initial exploitation phase, but remember that cracking happens after you already have the hashes, meaning you’ve already compromised the system. A useful memory tip is to think of post-exploitation as the “what you do with the keys after you’ve unlocked the door.”
This CISSP practice question tests your understanding of security assessment and testing. 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 an internal security assessment, a tester uses a tool to attempt to crack password hashes extracted from a domain controller. Which phase of the penetration testing process does this represent?
Reconnaissance
Why wrong: Reconnaissance involves gathering information before exploitation, not cracking hashes.
Reporting
Why wrong: Reporting occurs after all testing is complete.
Post-exploitation
Password cracking is typically done after gaining initial access to further compromise the environment.
Exploitation
Why wrong: Exploitation is the initial compromise, not the subsequent activity.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Post-exploitation
C is correct because cracking password hashes extracted from a domain controller occurs after the tester has already gained access to the system. This activity is part of the post-exploitation phase, where the tester escalates privileges, extracts credentials, and moves laterally. In this context, the tester is using a tool like John the Ripper or Hashcat to crack NTLM hashes, which is a classic post-exploitation step to obtain plaintext passwords for further access.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Reconnaissance
Why it's wrong here
Reconnaissance involves gathering information before exploitation, not cracking hashes.
Reporting
Why it's wrong here
Reporting occurs after all testing is complete.
Post-exploitation
Why this is correct
Password cracking is typically done after gaining initial access to further compromise the environment.
Related concept
Read the scenario before looking for a memorised answer.
Exploitation
Why it's wrong here
Exploitation is the initial compromise, not the subsequent activity.
Common exam traps
The trap here is that candidates often confuse post-exploitation with exploitation, mistakenly thinking that cracking hashes is part of the initial exploitation phase, when in fact exploitation is the act of gaining access, and post-exploitation includes all activities performed after that access is achieved.
Detailed technical explanation
In a Windows domain environment, password hashes are stored as NTLM hashes in the Security Account Manager (SAM) database or NTDS.dit file on a domain controller. Tools like Mimikatz can extract these hashes via LSASS memory dumping, and then offline cracking tools like Hashcat use modes such as -m 1000 for NTLM to perform brute-force or dictionary attacks. A subtle behavior is that NTLM hashes are unsalted, making them vulnerable to rainbow table attacks, though modern cracking often relies on GPU-accelerated brute-force due to the hash's speed.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
What to study next
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FAQ
Security Assessment and Testing — This question tests Security Assessment and Testing — Read the scenario before looking for a memorised answer..
The correct answer is: Post-exploitation — C is correct because cracking password hashes extracted from a domain controller occurs after the tester has already gained access to the system. This activity is part of the post-exploitation phase, where the tester escalates privileges, extracts credentials, and moves laterally. In this context, the tester is using a tool like John the Ripper or Hashcat to crack NTLM hashes, which is a classic post-exploitation step to obtain plaintext passwords for further access.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This CISSP practice question is part of Courseiva's free ISC2 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 CISSP exam.
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