HOLLOWGRAPH is a .NET NativeAOT-compiled DLL that abuses Microsoft Graph API to use Microsoft 365 calendar events as a two-way dead-drop for C2 communication and data exfiltration, with events dated in the far future to avoid detection.
HOLLOWGRAPH is a .NET NativeAOT-compiled DLL that abuses Microsoft Graph API to use Microsoft 365 calendar events as a two-way dead-drop for C2 communication and data exfiltration, with events dated in the far future to avoid detection.