Deletes itself

Loads dropped DLL

Reads user/profile data of web browsers

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

Checks whether UAC is enabled

Enumerates connected drives

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

JavaScript code in executable

Writes to the Master Boot Record (MBR)

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

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext