Checks BIOS information in registry

BIOS information is often read in order to detect sandboxing environments.

Identifies Wine through registry keys

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

Reads user/profile data of web browsers

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

UPX packed file

Detects executables packed with UPX/modified UPX open source packer.

Adds Run key to start application

Checks for any installed AV software in registry

Downloads MZ/PE file

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.

Checks computer location settings

Looks up country code configured in the registry, likely geofence.

Drops file in System32 directory