Checks BIOS information in registry

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

Checks computer location settings

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

Drops startup file

Executes dropped EXE

Loads dropped DLL

Reads user/profile data of web browsers

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

Registers COM server for autorun

UPX packed file

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

Windows security modification

Adds Run key to start application

Checks installed software on the system

Looks up Uninstall key entries in the registry to enumerate software on the system.

Enumerates connected drives

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

Installs/modifies Browser Helper Object

BHOs are DLL modules which act as plugins for Internet Explorer.

Legitimate hosting services abused for malware hosting/C2

Maps connected drives based on registry

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

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

Suspicious use of SetThreadContext