The Dark Knight Returns: Joker malware analysis

Description

The report details sophisticated command and control (C2) techniques employed by the APT41 threat group. APT41 uses custom malware and legitimate tools to maintain persistent access to compromised networks while evading detection. Key techniques include DNS tunneling, domain fronting, and steganography to hide C2 traffic. The group also leverages cloud services and social media platforms as C2 channels. APT41 continually evolves their tactics to bypass security controls, making attribution and detection challenging. The report provides technical details on APT41's C2 infrastructure and recommendations for defending against their techniques.