Course 30 - Practical Malware Development - Beginner Level | Episode 1: C# Offensive Operations: Recon, Persistence, and File Acquisition

In this lesson, you’ll learn about: Defensive perspectives on common red-team techniques1. System Enumeration (Detection & Hardening)What attackers typically try to collect:OS version, hostname, IP addressCurrent user and privilege levelWhy it matters:Helps attackers tailor exploits and escalate privilegesDefensive measures:Monitor unusual process behavior querying system info repeatedlyUse Endpoint Detection & Response (EDR) to flag reconnaissance patternsApply least privilege to limit accessible system details2. Persistence Mechanisms (Prevention & Monitoring)Common persistence targets:Startup foldersRegistry Run keysScheduled tasks or servicesWhy it matters:Allows threats to survive reboots and maintain accessDefensive measures:Monitor changes to autorun registry keysUse tools like:Windows Event LogsSysmon (for registry modification tracking)Enforce:Application allowlistingRegular startup audits3. Command Execution & Remote Control (Threat Detection)Typical attacker behavior:Receiving commands from external serversExecuting instructions dynamicallyDefensive measures:Detect unusual outbound connections (C2 patterns)Inspect traffic for:Beaconing behaviorIrregular intervals or unknown domainsUse network segmentation and egress filtering4. Remote File Downloading (Risk Mitigation)Why attackers use it:To deliver additional payloads or tools dynamicallyDefensive measures:Restrict outbound traffic to approved domains onlyMonitor:Unexpected file downloadsExecution from temporary directoriesUse antivirus / EDR to scan downloaded content in real timeKey TakeawaysThese techniques (enumeration, persistence, remote control) are core attacker behaviorsDefenders should focus on:Visibility (logs, monitoring, EDR)Restriction (least privilege, network controls)Detection (behavioral analytics, anomaly detection)You can listen and download our episodes for free on more than 10 different platforms:https://linktr.ee/cybercode_academy