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August 20, 2025

Using GIAC Reverse Engineering Malware GREM questions can help you build confidence as you prepare for the exam. By practicing with these GREM dumps questions, you will be better prepared and more confident when you take the actual exam. Besides, GREM exam dumps questions cover a wide range of topics that are relevant to the certification exam. By using GREM dumps questions, you will be able to ensure that you have a comprehensive understanding of the material covered on the exam. Practice free GIAC GREM exam dumps below.

Page 1 of 6

1. You are analyzing a suspicious RTF file that is suspected of exploiting a buffer overflow vulnerability. The file contains multiple embedded OLE objects, and the content appears obfuscated.

How would you proceed with the analysis? (Choose three)

Use a tool like RTFScan to detect and extract any embedded shellcode.

Open the file in a hex editor and look for suspicious patterns in the OLE objects.

Execute the RTF file to observe any unusual system behavior.

Analyze the file for any exploit patterns related to CVE-2017-0199 or similar vulnerabilities.

Convert the file to plaintext and examine it for anomalies.

2. Which Windows API function is commonly used by malware to hide its presence from task managers and system monitors?

RegisterServiceProcess

TerminateProcess

IsDebuggerPresent

VirtualProtect

3. Which technique can be used by malware to evade dynamic analysis tools?

Packing the executable with a crypter

Using public key encryption

Implementing a sandbox escape mechanism

Rewriting the file header

4. Why is it important to analyze unpacked versions of malware?

To reduce the size of the malware sample

To understand the core functionality and intent of the malware

To identify the compiler used to build the malware

To improve the performance of antivirus software

5. What is the most effective method for analyzing obfuscated malware that uses dynamic code generation?

Static analysis of the binary

Unpacking the binary

Disassembling the code in IDA Pro

Running the malware in a sandbox to observe its behavior

6. Which of the following tools is commonly used for basic static analysis of malware?

IDA Pro

Strings

Wireshark

Process Monitor

7. What is a key sign that a macro in a Microsoft Office document might be malicious?

The macro is used to format text.

The macro makes external network connections.

The macro is encrypted with a known Office password.

The macro only manipulates internal document properties.

8. Which of the following are common execution flow control mechanisms in assembly language? (Choose Two)

JMP (Unconditional jump)

MOV (Move data)

LOOP (Loop control)

XOR (Exclusive OR)

9. What is the primary goal of behavioral malware analysis?

To detect and remove malware from the system

To observe how the malware interacts with the system and network during execution

To reverse engineer the malware's assembly code

To create malware signatures for antivirus software

10. You are analyzing a malware sample that appears to inject malicious code into the explorer.exe process. During execution, the malware creates a remote thread in explorer.exe and uses API calls to manipulate its memory.

How would you proceed with the analysis? (Choose three)

Monitor the API calls used for process injection, such as VirtualAllocEx() and CreateRemoteThread().

Dump the memory of the explorer.exe process and search for injected code.

Use a tool like Procmon to observe filesystem activity.

Analyze network traffic to detect any malicious communications initiated by explorer.exe.

Set breakpoints at the process injection-related API calls in a debugger.

Page 2 of 6

11. Which of the following Windows API functions is commonly used by malware to alter the flow of execution within another process? (Choose Two)

CreateRemoteThread

HeapCreate

WriteProcessMemory

GetMessage

12. Why would a .NET malware analyst focus on the app.config or web.config files?

To modify the assembly's target .NET Framework version

To check for hardcoded sensitive information

To identify the entry point of the application

To locate embedded resources

13. What feature of PDFs can be abused to hide malicious content? (Choose Two)

Layering

Compression algorithms

Metadata

Color profiles

14. What is a common sign that a PDF might be malicious?

The PDF is viewable on multiple platforms.

It contains extensive text and few images.

It triggers security warnings when opened.

The file size is smaller than average for similar documents.

15. What is a key indicator that an RTF file contains embedded malicious content?

The file size is unusually large.

The RTF file has multiple embedded objects, such as OLE objects.

The file is encoded in ASCII format.

The file contains a large amount of plaintext.

16. Which of the following flow control structures is often used by malware to loop through a list of tasks or commands?

Conditional statements

Switch statements

Infinite loops

Stack manipulation

17. Which of the following is a fundamental step in malware analysis before executing a sample?

Downloading the latest antivirus definitions

Hashing the malware sample

Running the malware in a production environment

Connecting the system to the internet

18. When analyzing a macro within a Microsoft Office file, which of the following indicators would likely suggest malicious intent?

The macro is digitally signed.

The macro includes comments explaining its functionality.

The macro attempts to connect to external IP addresses.

The macro uses document properties in benign operations.

19. What does the presence of DllImport attribute indicate in a .NET assembly? (Choose Two)

Direct invocation of unmanaged code

An attempt to perform network communication

Interoperability with Windows API functions

Automatic garbage collection

20. What can the analysis of import tables in an executable reveal about suspected malware?

The programming language in which the malware was written

The exact payload of the malware

Potential functionality of the malware based on imported system calls

The geographical origin of the malware author

Page 3 of 6

21. Which of the following file types can potentially be embedded within a malicious PDF? (Choose Two)

.exe

.xlsx

.bat

.txt

22. In the context of Office macros, what does the term "persistence" refer to?

The ability of the macro to delete itself after execution.

The capability of the macro to remain active or re-activate after the initial execution.

The feature of the macro to resist modifications.

The capacity of the macro to function across different versions of Office.

23. API hooking implemented by malware is primarily used for which purpose?

Increasing the speed of the malware execution

Making the malware more detectable

Intercepting and possibly altering the function calls, messages, or events passed between software components

Simplifying the malware code

24. Which of the following are common flow control instructions used in malware? (Choose two)

JMP

XOR

CALL

POP

25. How can malware attempt to detect and respond to being run in a virtual machine? (Choose Three)

Checking the MAC address for known VM vendor OUIs

Looking for the presence of specific device drivers

Attempting to write to known read-only memory locations

Measuring the disk access time

Enumerating running processes for VM-associated names

26. Which of the following are commonly observed behaviors in malware during behavioral analysis? (Choose two)

Modifying the system's registry settings

Attempting to format the system’s hard drive

Downloading additional payloads from external servers

Creating large amounts of encrypted random files

27. What aspect of a file is NOT typically considered during static analysis?

The file's hash value

The file's interaction with the operating system when executed

The presence of digital signatures

The embedded resources within the file

28. Process hollowing is a technique used by malware.

What is the final step in this process?

Creating a new, legitimate process in a suspended state

Unmapping the memory of the legitimate process

Injecting the malicious code into the address space of the process

Resuming the thread of the new process

29. What aspect of an embedded object within an RTF file is crucial to analyze for determining potential malicious intent?

The file extension of the embedded object

The metadata describing the creation date of the object

The binary data representing the object

The spatial positioning of the object within the document

30. In the context of reversing malware, what is the role of static analysis?

To execute the malware in a controlled environment and observe its behavior

To analyze the code without executing it, identifying functions, variables, and logic

To interact with the malware's command and control servers safely

To determine the geographic origin of the malware

Page 4 of 6

31. Which of the following API calls is commonly used by malware to download additional payloads?

CreateProcess()

WinExec()

URLDownloadToFile()

GetProcAddress()

32. Which of the following behaviors could indicate that a macro in an Office document is malicious? (Choose two)

The macro interacts with system processes outside of Office.

The macro repeatedly saves the document to disk.

The macro includes comments explaining its functionality.

The macro attempts to download additional files from the web.

33. In malware analysis, what is the purpose of comparing the hash of a suspicious file to known malware databases?

To identify the file's original author

To determine the exact changes made to the system by the malware

To potentially identify the malware and its known behaviors

To understand the network behavior of the malware

34. What is the main purpose of using the SetWindowsHookEx function in malware?

To allocate memory within a process

To intercept and monitor system messages or events

To compress data

To generate cryptographic keys

35. What is the primary purpose of using a disassembler in reverse engineering malware?

To modify the malware’s behavior

To observe runtime behavior of the malware

To translate machine code into human-readable assembly code

To decrypt encoded strings

36. What techniques are commonly used by attackers in malicious RTF files? (Choose two)

Exploiting CVE-2017-0199

Embedding malicious URLs in RTF comments

Embedding shellcode in OLE objects

Hiding malicious code in RTF metadata

37. What is the typical behavior of a malicious RTF file when opened in a vulnerable application?

It crashes the application to signal a successful exploit.

It executes embedded shellcode without any noticeable changes to the document.

It prompts the user to enable editing or content.

It displays garbled or nonsensical text to distract the user.

38. Which of the following file attributes can be considered a static property when analyzing malware?

File size

Network traffic generated by the file

Behavior of the file in a sandbox environment

Changes made by the file to system registry settings

39. Which techniques are commonly used for unpacking malware? (Choose two)

Running the malware in a sandbox to observe its behavior

Using a debugger to step through the unpacking code

Disassembling the malware in IDA Pro

Extracting the unpacked payload from memory

40. Which of the following indicators should raise suspicion when analyzing the contents of an RTF file? (Choose Two)

Presence of multiple document revision histories

Inclusion of external hyperlinks

Embedded objects with no logical relation to the document content

Overuse of document formatting control words

Page 5 of 6

41. What is the primary use of a debugger in the context of unpacking malware?

To automatically decompile the malware to high-level code

To execute malware step by step and observe its behavior

To enhance the malware's obfuscation

To generate signatures for antivirus software

42. Which Windows process is often targeted by malware for process injection techniques?

svchost.exe

explorer.exe

wininit.exe

csrss.exe

43. How can obfuscated call instructions within malware be identified and analyzed? (Choose Two)

By recognizing patterns that deviate from standard compilation outputs

Through the identification of unusual jumps and data movements that precede call instructions

By counting the frequency of call instructions

Monitoring stack changes prior to call operations

44. What features should a malware analysis lab have to ensure effective analysis? (Choose Three)

High-speed internet access without any filtering

The capability to restore machines to a clean state

Tools for both static and dynamic analysis

Restricted access control

Availability of up-to-date anti-malware solutions

45. Which instructions or constructs are essential to understand when analyzing malware for anti-analysis techniques? (Choose Two)

SEH (Structured Exception Handling)

Direct memory access operations

Indirect branching

ASCII adjustments for case conversion

46. 1.Which outcome indicates successful deobfuscation of malicious JavaScript?

The script is shorter than the original.

The script's original logic and function calls are understandable.

The script no longer executes in any browser.

The script shows increased use of clear text strings.

47. In the context of PDF analysis, what does the term "JavaScript deobfuscation" typically refer to?

Converting JavaScript into a more compact format

Rewriting JavaScript in a different programming language

Clarifying the intent and structure of obfuscated JavaScript code within the PDF

Removing all JavaScript code from the PDF

48. In reverse engineering .NET malware, what does dynamic analysis allow you to observe?

The source code in its original high-level language

How the application interacts with its environment in real-time

The static set of APIs called by the application

The file size and checksum

49. Which tool is typically used to debug packed Windows executables?

dnSpy

OllyDbg

Wireshark

Radare2

50. You are analyzing a malware sample and notice it uses multiple JMP instructions that lead to dead code segments, making it difficult to follow the actual execution flow.

What steps should you take to overcome this misdirection technique? (Choose three)

Use dynamic analysis to observe the actual execution flow of the malware.

Analyze each JMP instruction to determine whether it leads to valid code.

Patch the binary to remove unnecessary JMP instructions.

Trace the stack during execution to identify valid code paths.

Modify the binary to change the JMP instructions to NOPs.

Page 6 of 6

51. Which approach can help in bypassing malware that employs timing checks to detect analysis tools?

Modifying the system clock

Patching the malware binary to remove the checks

Using network traffic generators

Increasing the priority of the malware process

52. Which of the following is a common technique used to obfuscate JavaScript?

Using extremely verbose variable and function names

Implementing straightforward logic for code execution

Employing hex encoding or string manipulation

Avoiding the use of any external libraries

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