Reads user/profile data of web browsers

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

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

UPX packed file

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