Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'ykkaof' = '%HOMEPATH%\ykkaof.exe /r'
Creates the following files on removable media
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\lom602.exe
- <Drive name for removable media>:\dualectls.exe
- <Drive name for removable media>:\ff_ot_user_guide.exe
- <Drive name for removable media>:\video.exe
- <Drive name for removable media>:\168.exe
- <Drive name for removable media>:\4f0bf7ff71f28.exe
- <Drive name for removable media>:\210252809.exe
- <Drive name for removable media>:\1189.exe
- <Drive name for removable media>:\13.exe
- <Drive name for removable media>:\pushkin.exe
- <Drive name for removable media>:\cveuropeo.exe
- <Drive name for removable media>:\508softwareandos.exe
- <Drive name for removable media>:\applicantform_en.exe
- <Drive name for removable media>:\lisp_success.exe
- <Drive name for removable media>:\tileimage.exe
- <Drive name for removable media>:\toolbar.exe
- <Drive name for removable media>:\dial.exe
- <Drive name for removable media>:\dashborder_120.exe
- <Drive name for removable media>:\default.exe
- <Drive name for removable media>:\dialmap.exe
- <Drive name for removable media>:\delete.exe
- <Drive name for removable media>:\join.exe
- <Drive name for removable media>:\split.exe
- <Drive name for removable media>:\correct.exe
- <Drive name for removable media>:\ykkaof.exe
- <Drive name for removable media>:\10thingscondoms.exe
- <Drive name for removable media>:\arrow-down.exe
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%\ykkaof.exe
Sets the 'hidden' attribute to the following files
- %HOMEPATH%\ykkaof.exe
- <Drive name for removable media>:\autorun.inf
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%\ykkaof.exe'
