Course 41 - Analyzing Attacks for Incident Handlers | Episode 4: Live Memory Forensics, VM Troubleshooting, and Malware Analysis

🧠 Live Memory Forensics Lab — Mandiant Redline (Full Workflow)🎯 Lab ObjectivePerform a real-world memory forensic investigation on an infected Windows VM using Mandiant Redline, covering:Infection → Data Collection → Transfer → Analysis → IOC Identification🧪 Lab OverviewEnvironment:Target: Windows 7 Virtual Machine (infected)Malware Sample: her.exe (Dyre/Dridex family behavior)Tool: Mandiant Redline⚠️ Critical Rule❌ NEVER analyze forensic data on the infected machine✅ ALWAYS transfer to a clean analysis system🔧 Part 1: Operational Reality & Troubleshooting💣 Step 1: Execute Malware (Inside VM Only)Run her.exeAllow infection to occurObserve system behavior (optional monitoring)📥 Step 2: Run Redline CollectorPerform memory auditOutput size: ~9 GB🚧 Problem: Data Transfer FailureLarge forensic data often:Fails to copyGets interruptedExceeds VM limitations🛠️ Troubleshooting Techniques1. Network ReconfigurationSwitch VM network mode:From: Host-OnlyTo: NAT (Network Address Translation)✔ Enables outbound communication✔ Allows file transfer2. Smart Data ReductionInstead of copying full audit:Locate Sessions FolderCopy ONLY:Sessions/ directory🔥 Why This WorksSessions folder contains analysis-ready dataAvoids transferring unnecessary bulk files🧠 Key InsightReal DFIR work includes solving infrastructure problems — not just analysis🔍 Part 2: Deep-Dive Forensic Investigation🧾 Step 1: Load Data into RedlineOpen Sessions folderBegin analysis on clean machine📊 Investigation Areas1. 🖥️ System InformationCollect:Operating SystemIP AddressMAC AddressRAM SizeLogged-in Users🎯 Purpose:Establish investigation baselineRequired for incident reporting2. 🌐 Listening PortsAnalyze:Active portsOpen socketsExternal connections🚨 Look for:Unknown portsSuspicious outbound trafficMapping to malicious processes💡 Example:Malware (ELC / ELIC) tied to network activity3. 🔤 Strings & Memory ArtifactsExtract:Command-line activityFile pathsEmbedded indicators🎯 Goal:Identify what executed in memoryReveal hidden behavior4. 🗃️ Registry PersistenceTechnique:Sort registry keys by:Last Modified Time🚨 Look for:Recent suspicious changesAuto-start entriesPersistence mechanisms🔥 Key Insight:Attackers modify registry to survive reboot5. 🌳 Process Hierarchy (CRITICAL)Analyze process tree:Track execution flow:her.exe → spawns → ech.exe → further activity 🚨 Look for:Parent-child relationshipsHidden or injected processesUnusual process chains💡 Example Behavior:her.exe (initial payload)spawns hidden process ech.exe6. 🧬 Indicators of Compromise (IOCs)Use:Known malicious hashesThreat intel feedsRedline Capabilities:Auto-flag suspicious artifactsSearch across memory dataset🎯 Goal:Confirm malicious presenceIdentify scope of compromise🧠 Investigation MindsetYou are answering:What executed?What changed?What communicated externally?How did it persist?⚠️ Key Challenges HighlightedLarge data handling (GB-scale)VM networking issuesData transfer limitationsEnvironment troubleshooting🧠 Key TakeawaysMemory analysis is data-heavy and complexOperational issues are part of real DFIR workProcess trees reveal true attack flowRegistry analysis exposes persistenceNetwork artifacts expose exfiltration🚨 Golden DFIR WorkflowInfect → Capture → Isolate → Transfer → Analyze → Correlate → Report📌 Pro Tips (Real-World)Always plan for large data transfersKnow basic networking (NAT, adapters)Focus on sessions, not raw dumpsCorrelate findings across:MemoryNetworkRegistryYou can listen and download our episodes for free on more than 10 different platforms:https://linktr.ee/cybercode_academy