Cobalt Strike's ExternalC2 framework vs Ultimate AppLocker Bypass List: Side-by-Side Comparison (2026)

Cobalt Strike's ExternalC2 framework: A specification/framework for extending default C2 communication channels in Cobalt Strike..

Ultimate AppLocker Bypass List: A repository documenting AppLocker bypass techniques with verified methods, legacy DLL execution approaches, and a PowerShell module for identifying AppLocker weaknesses..

Both serve the Red-Team & Adversary Emulation market but differ in approach, feature depth, and target audience.

Cobalt Strike's ExternalC2 framework and Ultimate AppLocker Bypass List serve similar Red-Team & Adversary Emulation use cases: both are Red-Team & Adversary Emulation tools. Key differences: Ultimate AppLocker Bypass List is open-source. Review the feature comparison above to determine which fits your requirements.