Claude AI-Generated Fake Windows Login Demonstrates Credential Capture via Mythic C2

Summary

A lab demonstration shows an AI-generated Windows credential prompt using host or domain details to appear legitimate and capture valid and failed credentials through a Mythic C2 agent.

Key points

• The demonstrated fake login uses a native Windows credential prompt and adapts its displayed context using the machine’s hostname or domain.
• The code checks whether the system is domain-joined, then validates credentials against the domain or locally.
• In a lab, the presenter used a Mythic C2 beacon to load and run the fake login with the Execute Assembly module.
• The demonstration shows the C2 interface receiving both valid and failed credential submissions.
• The presenter describes the demonstration as educational; the technique illustrates how convincing system prompts can be used to capture credentials.

MITRE ATT&CK

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