Malware Analyst Quiz

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1. Which of the following best describes ‘signature-based detection’?

Using artificial intelligence to predict malware attacks

Detecting malware based on unusual behavior patterns

Detecting malware based on user complaints

Identifying malware based on specific patterns or ‘signatures’ found in the code

2. What is the primary function of the Import Address Table (IAT) in the context of Windows malware analysis?

To list the APIs imported by a PE file for execution

To encrypt the malware payload to evade detection

To keep a log of all malicious activities performed by the malware

To store addresses of the malware’s command and control servers

3. During a reverse engineering session with IDA Pro, you encounter a function with heavily obfuscated code that dynamically resolves API calls using a hash algorithm. What technique could you employ to identify the API calls being made, and how would this impact your analysis?

Use dynamic analysis tools to execute the malware and monitor API call resolutions in real-time.

Ignore the obfuscation and focus on other parts of the code to infer the malware’s functionality.

Rewrite the malware code for clearer understanding.

Manually decompile the function and calculate the hashes to match them with known API calls.

4. You are tasked with analyzing a complex malware sample that employs polymorphic code to evade signature-based detection. What strategies would you employ in IDA Pro to understand and document the polymorphic behavior, and how might this affect your overall analysis process?

Attempt to manually reverse-engineer each variant of the polymorphic code.

Rely on dynamic analysis to understand the malware’s behavior, given the difficulty of analyzing polymorphic code statically.

Focus solely on the static properties of the malware, ignoring its polymorphic nature.

Use IDA Pro’s scripting capabilities to automate the identification and documentation of polymorphic code patterns.

5. What is the primary goal of ‘heap spraying’ in exploit development?

To flood the memory with shellcode to facilitate arbitrary code execution

To allocate large blocks of memory for data storage

To free up system memory resources

To protect the heap from being exploited by malware

6. What does the term ‘Zero-Day’ exploit refer to?

An exploit that takes advantage of a vulnerability on the same day a software product is released

An exploit that targets a previously unknown vulnerability for which there is no patch available

An exploit that targets software vulnerabilities on the day they are publicly disclosed

An exploit for which a patch has been available for zero days

7. Which of the following best describes ‘sandbox evasion’ techniques used by advanced malware?

Compressing the malware file to bypass file size limits in sandbox analysis tools

Encrypting the malware payload to prevent analysis in a sandbox environment

Splitting the malware into smaller fragments to evade network-based sandboxes

Detecting the presence of a virtualized environment and altering behavior to avoid detection

8. What is the significance of ‘side-channel attacks’ in the context of cybersecurity?

These attacks exploit indirect information leakage from a system, such as timing, power consumption, or electromagnetic emissions, to extract sensitive data.

They refer to attacks that target the less secure, peripheral systems connected to the main target.

They involve directly attacking cryptographic algorithms to break their encryption.

Side-channel attacks are focused on intercepting side communications between applications to gain unauthorized access.

9. What is ‘DLL Hijacking’ in the context of cybersecurity?

Encrypting DLL files to demand a ransom for decryption keys

Injecting malicious code into legitimate DLL files

Deleting or corrupting DLL files to disrupt system functionality

Exploiting the search order of DLLs to execute malicious code

10. Which technique is often used by malware to modify the flow of control within a program without directly modifying its code?

Registry modification

Buffer overflow

Code injection

API hooking

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