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Course Instructor: Ashish Revar

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Reversing Malicious Code
LearnREMAUnit 37

Topic 3.7 of Reversing Malicious Code

Living off the Land (LotL)

Nine LOLBins with command examples, the four abuse categories, suspicious parent-child process relationships, Sysmon detection rules, and the LOLBAS Project as a reference.

~25 min total·4 quadrants of structured content

By the end of this topic, you will

  • Define LOLBins and explain why they evade application whitelisting
  • Give the command syntax for at least five LOLBins and state what each does
  • Categorise LOLBins by abuse type: file download, code execution, lateral movement
  • Write a Sysmon Event ID 1 rule to detect certutil downloading a file
  • Identify five suspicious parent-child process relationships and their implications
  • Describe the LOLBAS Project and how to use it as a reference during analysis
Q1 · E-TUTORIAL (2)Q2 · E-CONTENT (1)Q3 · WEB RESOURCES (8)Q4 · SELF-ASSESSMENT (2)

Quadrant 1 · e-Tutorial

Video lectures and walkthroughs

Quadrant 2 · e-Content

Articles and case studies

Education

Living off the Land (LotL)

How attackers abuse legitimate signed Windows binaries to download payloads, execute code, and bypass security controls — with command examples for nine LOLBins and detection strategies using Sysmon.

16 min read

Quadrant 3 · Web Resources

Downloadable material and curated external links

Downloadable reference material

EBook

REMA eBook 2026

v1.0

Open resource

Cheatsheet

REMA Cheatsheet 2026

v1.0

Open resource

MCQ Bank

REMA MCQ Bank 2026

v1.0

Open resource

Question Bank

REMA Question Bank 2026

v1.0

Open resource

Featured Podcast

Podcast Episode

The Malicious Process Lifecycle: From Execution to Evasion

How malware executes, establishes persistence, injects into legitimate processes, and evades detection inside modern operating systems.

Listen now

External links

LOLBAS Project — Living Off The Land Binaries

Definitive searchable catalogue of all known LOLBins with abuse scenarios, detection guidance, and real-world usage references.

Sysmon — System Monitor by Sysinternals

Install Sysmon in your analysis VM with the SwiftOnSecurity config for immediate LOLBin detection coverage.

MITRE ATT&CK — System Binary Proxy Execution (T1218)

ATT&CK parent technique for LOLBin abuse with all sub-techniques covering regsvr32, rundll32, mshta, msiexec, and others.

Quadrant 4 · Self-Assessment

Test your knowledge — earn a certificate on first pass

Reversing Malicious Code

Covers x86 and x64 assembly analysis, control flow graphs, Windows API-level malware behaviour, DLL analysis, injection techniques, API hooking, and Living-off-the-Land attacks.

20 questions30 minPass: 60%

REMA Complete Assessment

A comprehensive 120-question assessment covering the entire Reverse Engineering and Malware Analysis curriculum: malware taxonomy and reverse engineering fundamentals, static and dynamic analysis, reversing malicious code, malicious web and document files, in-depth analysis of packed and fileless malware, and self-defending malware techniques.

120 questions90 minPass: 60%