Executes dropped EXE

Reads user/profile data of web browsers

Infostealers often target stored browser data, which can include saved credentials etc.

Creates a large amount of network flows

This may indicate a network scan to discover remotely running services.

Enumerates connected drives

Attempts to read the root path of hard drives other than the default C: drive.

Writes to the Master Boot Record (MBR)

Bootkits write to the MBR to gain persistence at a level below the operating system.

Drops file in System32 directory