Duts is a parasitic file infector virus. It is the first known virus for the PocketPC platform. Duts affects ARM-based devices only.
Duts is a 1520 bytes long program, hand written in assembly for the ARM processor. When an infected file is executed the virus asks for permission to infect:
When granted the permission, Duts attempts to infect all EXE files in the current directory. Duts only infects files that are bigger than 4096 bytes and have not been infected yet. As an infection marker the virus writes the string 'atar' to the Windows Version field of the EXE header.
The infection routine is fairly simple. The virus body is appended to the file and the last section is made readable and executable. The entry point of the file is set to the beginning of the virus code.
Duts contains two messages that are not displayed:
This is proof of concept code. Also, i wanted to make avers happy.
The situation when Pocket PC antiviruses detect only EICAR file had to end ...