Checks BIOS information in registry

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

Executes dropped EXE

Loads dropped DLL

Checks whether UAC is enabled

Looks up external IP address via web service

Uses a legitimate IP lookup service to find the infected system's external IP.

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

Enumerates processes with tasklist

Suspicious use of NtSetInformationThreadHideFromDebugger

UPX packed file

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