Workshop Demonstrates ConfuserEx .NET Anti-Debugging and Analysis

Summary

A workshop demonstrates how ConfuserEx 2 adds .NET anti-debugging logic to a module constructor, how DE4 helps make obfuscated code easier to inspect, and how repeated debugger checks complicate analysis.

Key points

• ConfuserEx 2 applies protections such as anti-debugging and anti-dumping to compiled binaries through a project configuration file.
• In the demonstration, anti-debugging logic is inserted into a module constructor, which runs before the program’s main entry point.
• Unicode-based symbol names make the obfuscated code harder for a human analyst to interpret.
• The demonstrated anti-debug logic checks for profiling, then runs continued debugger checks on a background thread and terminates the process if detected.
• DE4 detects ConfuserEx and renames obfuscated symbols, improving readability; the presenter notes it does not remove the demonstrated anti-debugging logic.
• The workshop discusses manually modifying a binary or analyzing it after runtime deobfuscation as ways to work around layered anti-analysis.

MITRE ATT&CK

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