Technical Analysis Zscaler ThreatLabz has previously analyzed DreamBus and its modules. Each DreamBus module is an Executable and Linkable Format (ELF) binary that is packed by UPX with a modified header and footer. This alteration is designed to prevent the UPX command-line tool from statically unpacking DreamBus binaries. The magic bytes UPX! (0x21585055) are typically […]