Transcribed
Course 30 - Practical Malware Development - Beginner Level | Episode 2: Mastering C# System Control: Navigating, Enumerating, and Executing
Apr 15, 2026 ·
19m 58s
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Course 30 - Practical Malware Development - Beginner Level | Episode 2: Mastering C# System Control: Navigating, Enumerating, and Executing
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Description
In this lesson, you’ll learn about: Detecting and defending against system control techniques1. Directory Navigation & Enumeration (Detection) - What attackers typically do: - List files and directories - Change...
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In this lesson, you’ll learn about: Detecting and defending against system control techniques1. Directory Navigation & Enumeration (Detection)
You can listen and download our episodes for free on more than 10 different platforms:
https://linktr.ee/cybercode_academy
show less
- What attackers typically do:
- List files and directories
- Change working directories to explore the system
- Why it matters:
- Helps locate sensitive files (credentials, configs, backups)
- Defensive strategies:
- Monitor processes accessing large numbers of files
- Detect unusual access to:
- System directories
- User profile folders
- Use file integrity monitoring (FIM) tools
- Common data collected:
- Hostname, username, OS version
- Running processes and privileges
- Why it matters:
- Enables privilege escalation and tailored attacks
- Defensive strategies:
- Use EDR solutions to detect:
- Scripts or processes querying system info repeatedly
- Monitor abnormal use of:
- Environment variables
- Process enumeration APIs
- Use EDR solutions to detect:
- Typical attacker behavior:
- Launching cmd.exe or PowerShell silently
- Redirecting output for remote use
- Red flags:
- Hidden or background shell execution
- Non-interactive processes spawning command shells
- Defensive strategies:
- Enable logging:
- Process creation events (e.g., Event ID 4688)
- Detect:
- Parent-child anomalies (e.g., Office → cmd.exe)
- Use:
- Application allowlisting
- PowerShell constrained language mode
- Enable logging:
- Behavior pattern:
- Program receives commands → parses them → executes locally
- Indicators of compromise (IOCs):
- Repeated outbound connections to a single endpoint
- Commands executed without user interaction
- Consistent “beaconing” intervals
- Defensive strategies:
- Monitor network traffic patterns (C2 detection)
- Apply egress filtering (block unknown outbound traffic)
- Use behavioral analytics to detect automation patterns
- These techniques represent core attacker tradecraft:
- File system exploration
- System reconnaissance
- Command execution
- Strong defense relies on:
- Visibility (logs, EDR, network monitoring)
- Control (least privilege, allowlisting)
- Detection (behavior-based alerts, anomaly detection)
You can listen and download our episodes for free on more than 10 different platforms:
https://linktr.ee/cybercode_academy
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