シャドーイング練習: Malware Analysis is a MESS! (and I love it.) - 動画で英語スピーキングを学ぶ

Malware analysis has this reputation online  where people act like you need a PhD in assembly language just to open a debugger. Meanwhile the  reality is usually some sleep-deprived guy in a hoodie staring at a VM at 2AM going “bro why  is this ransomware trying to contact Russia through Internet Explorer.” Malware analysis  is genuinely one of the most fun parts of cybersecurity once you stop treating it like a  university lecture and start treating it like detective work where the criminal literally left  their code behind. The problem is most beginners try learning it by reading 800-page x86 books  before they’ve even opened a malware sample, which is like reading an airplane manual before  touching a paper plane. No wonder people quit.

The fastest way to learn is honestly to infect  yourself on purpose. Which sounds insane out of context. Spin up a Windows VM in VirtualBox,  disable Windows Defender because Defender treats malware samples like a Twitter mod seeing an  opinion they dislike, take a snapshot so you can roll back later when everything catches fire, then  download real malware samples from MalwareBazaar or theZoo on GitHub. These are actual malware  samples used in real attacks, not fake tutorial malware named “virus.exe.” So never run them  on your real machine unless you want your next Google search to be “how to explain ransomware  to my parents.” Start with something simple like a cryptominer or keylogger, double click it,  and just watch what happens. Suddenly your VM starts acting possessed. CPU spikes to 97%, weird  processes appear, your fans sound like a Boeing 747 preparing for takeoff. Perfect. Now the fun  begins. Open Task Manager, inspect processes, check suspicious folders, monitor network traffic  with Wireshark. You stop learning theory and start seeing the attack happen live like you’re  watching a cybersecurity bodycam video.

Then you discover Process Hacker and Process  Explorer which basically give you admin-level X-ray vision into Windows. Open them while  malware is running and suddenly you’re watching new processes spawn like Marvel characters in  a crossover movie. Inspect network connections, loaded DLLs, memory permissions, file handles.  You start recognizing patterns immediately.

ProcMon from Sysinternals makes things  even crazier. Run it before executing malware and your screen instantly looks like  a crypto chart during a market crash because thousands of filesystem and registry events start  flooding in. At first it looks impossible to read, but once you filter by process name it suddenly  becomes clear. Malware writing persistence keys into the registry? Caught. Dropping payloads  into Temp folders? Logged. Making suspicious network connections to a domain registered 14  minutes ago? Also logged. Without even touching a disassembler yet you now have a complete  timeline of everything the malware did.

Static analysis tools like PE-bear  and Detect It Easy make you feel even smarter because now you can inspect  executables without running them. Drag a sample into Detect It Easy and it tells you if  the malware is packed, what compiler was used, whether it’s .NET or native code.  PE-bear shows imports, resources, sections, and API calls. Eventually you start  recognizing suspicious imports automatically.

Then comes x64dbg or IDA Free, which is where  the real reverse engineering begins. You load the malware, set a breakpoint, run it, and  suddenly you’re staring directly at assembly instructions wondering if computer  scientists were okay mentally when they invented this. But eventually it clicks.  F8 steps over functions, F7 steps into them, registers change, memory gets written, API  calls happen live. The first time you catch ransomware creating “ransom_note.txt” in memory  before it encrypts files, your brain produces enough dopamine to power a small country.  You’re not reading about ransomware anymore, you’re literally watching the exact  moment the villain presses the button.

FLARE VM makes the setup process way easier  because it’s basically the Avengers bundle of malware analysis tools. It’s a prebuilt Windows  VM with x64dbg, Ghidra, IDA, ProcMon, Wireshark, and everything else already installed. Snapshot  it immediately because eventually some malware sample will completely destroy the VM or detect  virtualization and refuse to run. Malware authors LOVE VM detection because apparently  even malicious software gets trust issues. Samples check for VirtualBox drivers,  VMware processes, suspicious MAC addresses, weird hardware names. Sometimes the malware  launches, realizes it’s inside a VM, and immediately exits like “nah bro this  feels like a setup.” That’s when you learn binary patching. Open the executable in a  hex editor, locate the VM detection check, replace the conditional jump with NOP  instructions, save it, rerun it. Suddenly the malware executes anyway. You just outplayed the  attacker in their own game and it feels amazing.

REMnux is basically the Linux version of  FLARE VM and together they cover almost everything you’ll need. Linux malware,  unpacking payloads, string extraction, decoding weird files, it’s all there. Tools  like radare2, binwalk, foremost, scalpel, and strings are preinstalled so you spend less  time fighting dependency issues and more time actually analyzing malware instead of debugging  package managers like some medieval IT wizard.

One of the best ways to improve is reading  actual malware reports from companies like Palo Alto Unit 42, Kaspersky, and ESET  because these reports are masterclasses in analysis. You see how professionals  document findings, explain techniques, structure investigations, and communicate  insanely technical concepts clearly. Half of malware analysis is honestly  just learning how to explain chaos without sounding like a conspiracy theorist  holding red string in front of a corkboard.

And the reason malware analysis gets  addictive is because it’s a puzzle that fights back. Malware uses obfuscation,  anti-debugging, packing, encrypted strings, VM detection, all specifically designed  to stop analysts. When you finally bypass those protections and unpack a heavily  obfuscated sample, it feels incredible.

So stop overthinking it and just  start safely breaking stuff. You are not supposed to understand everything  immediately. Nobody does. Every malware sample teaches you something new and slowly builds  your intuition for how malicious software behaves.