Executes dropped EXE

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

Enumerates connected drives

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

Maps connected drives based on registry

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

Suspicious use of SetThreadContext