Reads data files stored by FTP clients

Tries to access configuration files associated with programs like FileZilla.

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.

Maps connected drives based on registry

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

Suspicious use of SetThreadContext