Welcome to the Reversing Malware MCQs Page

Dive deep into the fascinating world of Reversing Malware with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Reversing Malware, a crucial aspect of Reverse Engineering. In this section, you will encounter a diverse range of MCQs that cover various aspects of Reversing Malware, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Reverse Engineering.

Check out the MCQs below to embark on an enriching journey through Reversing Malware. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Reverse Engineering.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Reversing Malware. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Reversing Malware MCQs | Page 10 of 10

Explore more Topics under Reverse Engineering

01

Introduction to Reverse Engineering

02

Low Level Software 🔒

03

Windows Fundamentals 🔒

04

Reversing Tools 🔒

05

Beyond the Documentation

06

Deciphering File Formats

07

Auditing Program Binaries 🔒

08

Piracy and Copy Protection

09

Antireversing Techniques 🔒

10

Breaking Protections 🔒

11

Reversing .NET 🔒

12

Decompilation

13

Deciphering Code Structures 🔒

14

Understanding Compiled Arithmetic

15

Deciphering Program Data 🔒

Q91.

What character do backdoor commands start with?

An exclamation mark

A question mark

A period

A dollar sign

Discuss

Answer: (a).An exclamation mark Explanation:Backdoor commands start with an exclamation mark.

Q92.

What is the significance of the private-message packet in communicating with the backdoor?

It helps to locate the code that processes the attacker's commands.

It provides the attacker with control of the program.

It contains a hard-coded exclamation mark (!) character.

It is an array of strings, each element being up to 0x50 (80 in decimal) characters long.

Discuss

Answer: (a).It helps to locate the code that processes the attacker's commands. Explanation:The most important code area in communicating with the backdoor is the one that processes private-message packets because it helps to locate the code that processes the attacker's commands.

Q93.

What happens if the first character of the actual message in the PRIVMSG command is not an exclamation mark?

The program exits the function and goes back to wait for the next server transmission.

The program skips the colon character that denotes the beginning of the message.

The program proceeds to compare the first character of the actual message with a character from 004050C5.

The program calls into a longish function at 00403016.

Discuss

Answer: (a).The program exits the function and goes back to wait for the next server transmission. Explanation:If the first character of the actual message in the PRIVMSG command is not an exclamation mark, the program exits the function and goes back to wait for the next server transmission.

Q94.

What is the purpose of the "!socks4" command in the backdoor program?

To install a SOCKS4 server on an open port on the infected system.

To route all traffic through a single server.

To establish a thread that waits for connections that use the SOCKS4 protocol.

To create anonymous connections to servers on the Internet.

Discuss

Answer: (c).To establish a thread that waits for connections that use the SOCKS4 protocol. Explanation:The "!socks4" command establishes a thread that waits for connections that use the SOCKS4 protocol.

Q95.

How does the use of SOCKS4 servers in the backdoor program create criminal opportunities for attackers?

It allows them to anonymously connect to servers on the Internet using the legitimate system owner's identity.

It provides them with control of the program through private-message packets.

It helps them locate the code that processes their commands.

It compares a string from [EBP-60] with a string from a global variable.

Discuss

Answer: (a).It allows them to anonymously connect to servers on the Internet using the legitimate system owner's identity. Explanation:The use of SOCKS4 servers in the backdoor program allows attackers to anonymously connect to servers on the Internet using the legitimate system owner's identity, creating endless criminal opportunities.

Q96.

What is malware?

Any program that works against the interests of the system’s user or owner

Any program that works in the interest of the system’s end user

Any program that is harmless and useful

Any program that is designed to protect the system

Discuss

Answer: (a).Any program that works against the interests of the system’s user or owner Explanation:Malware is any program that works against the interests of the system's user or owner.

Q97.

What is the basic premise of most malware defense strategies?

To leverage the fact that there is always some kind of trusted element in the system

To encrypt all files on the hard drive

To install antivirus software on all hardware devices

To physically replace the processor to fix software-level bugs

Discuss

Answer: (a).To leverage the fact that there is always some kind of trusted element in the system Explanation:The basic premise of most malware defense strategies is to leverage the fact that there is always some kind of trusted element in the system.

Q98.

What is firmware?

Low-level code that implements each and every supported assembly language instruction using micro-ops

A type of antivirus software

A filesystem filter that intercepts file system calls

None of the above

Discuss

Answer: (a).Low-level code that implements each and every supported assembly language instruction using micro-ops Explanation:Firmware is low-level code that implements each and every supported assembly language instruction using micro-ops.

Q99.

What is the basic premise of most malware defense strategies?

Leveraging the fact that there is always some kind of trusted element in the system

Creating a new trusted element in the system

Finding all potential malware and eliminating it

Disabling all system functions to prevent malware attacks

Discuss

Answer: (a).Leveraging the fact that there is always some kind of trusted element in the system Explanation:Most malware defense strategies leverage the fact that there is always some kind of trusted element in the system.

Page 10 of 10

Low Level Software 🔒

Windows Fundamentals 🔒

Reversing Tools 🔒

Auditing Program Binaries 🔒

Antireversing Techniques 🔒

Breaking Protections 🔒

Reversing .NET 🔒

Deciphering Code Structures 🔒

Deciphering Program Data 🔒

Welcome to the Reversing Malware MCQs Page

Reversing Malware MCQs | Page 10 of 10

Explore more Topics under Reverse Engineering

Introduction to Reverse Engineering

Beyond the Documentation

Deciphering File Formats

Piracy and Copy Protection

Decompilation

Understanding Compiled Arithmetic

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