Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'kuuuju' = '%HOMEPATH%\kuuuju.exe /R'
Creates the following files on removable media
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\rcxb.tmp
- <Drive name for removable media>:\dashborder_120.exe
- <Drive name for removable media>:\rcxc.tmp
- <Drive name for removable media>:\dashborder_144.exe
- <Drive name for removable media>:\rcxd.tmp
- <Drive name for removable media>:\february_catalogue__2015.exe
- <Drive name for removable media>:\rcxe.tmp
- <Drive name for removable media>:\rcxf.tmp
- <Drive name for removable media>:\rcx10.tmp
- <Drive name for removable media>:\applicantform_en.exe
- <Drive name for removable media>:\rcx11.tmp
- <Drive name for removable media>:\rcx12.tmp
- <Drive name for removable media>:\rcx13.tmp
- <Drive name for removable media>:\fi51.exe
- <Drive name for removable media>:\rcx14.tmp
- <Drive name for removable media>:\dashborder_96.exe
- <Drive name for removable media>:\rcx15.tmp
- <Drive name for removable media>:\rcxa.tmp
- <Drive name for removable media>:\rcx9.tmp
- <Drive name for removable media>:\kuuuju.exe
- <Drive name for removable media>:\000814251_video_01.exe
- <Drive name for removable media>:\rcx1.tmp
- <Drive name for removable media>:\rcx2.tmp
- <Drive name for removable media>:\archer.exe
- <Drive name for removable media>:\rcx3.tmp
- <Drive name for removable media>:\rcx4.tmp
- <Drive name for removable media>:\join.exe
- <Drive name for removable media>:\rcx5.tmp
- <Drive name for removable media>:\rcx6.tmp
- <Drive name for removable media>:\toolbar.exe
- <Drive name for removable media>:\rcx7.tmp
- <Drive name for removable media>:\coffee.exe
- <Drive name for removable media>:\rcx8.tmp
- <Drive name for removable media>:\dashborder_192.exe
- <Drive name for removable media>:\default.exe
- <Drive name for removable media>:\rcx16.tmp
Malicious functions
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Modifies file system
Creates the following files
- %HOMEPATH%\kuuuju.exe
Sets the 'hidden' attribute to the following files
- %HOMEPATH%\kuuuju.exe
- <Drive name for removable media>:\autorun.inf
Deletes the following files
- <Drive name for removable media>:\000814251_video_01.exe
- <Drive name for removable media>:\archer.exe
- <Drive name for removable media>:\join.exe
- <Drive name for removable media>:\toolbar.exe
- <Drive name for removable media>:\coffee.exe
- <Drive name for removable media>:\dashborder_192.exe
- <Drive name for removable media>:\default.exe
- <Drive name for removable media>:\dashborder_96.exe
- <Drive name for removable media>:\dashborder_120.exe
- <Drive name for removable media>:\dashborder_144.exe
- <Drive name for removable media>:\february_catalogue__2015.exe
- <Drive name for removable media>:\applicantform_en.exe
- <Drive name for removable media>:\fi51.exe
Substitutes the following files
- <Drive name for removable media>:\000814251_video_01.exe
- <Drive name for removable media>:\archer.exe
- <Drive name for removable media>:\join.exe
- <Drive name for removable media>:\toolbar.exe
- <Drive name for removable media>:\coffee.exe
- <Drive name for removable media>:\dashborder_192.exe
- <Drive name for removable media>:\default.exe
- <Drive name for removable media>:\dashborder_96.exe
- <Drive name for removable media>:\dashborder_120.exe
- <Drive name for removable media>:\dashborder_144.exe
- <Drive name for removable media>:\february_catalogue__2015.exe
- <Drive name for removable media>:\applicantform_en.exe
- <Drive name for removable media>:\fi51.exe
Network activity
Connects to
- '255.255.255.255':8003
UDP
- DNS ASK ns#.##ayer1352.com
- DNS ASK ns#.##ayer1352.net
- DNS ASK ns#.##ayer1352.org
Miscellaneous
Creates and executes the following
- '%HOMEPATH%\kuuuju.exe'