Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaux' = '%HOMEPATH%\yiaux.exe /i'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaux' = '%HOMEPATH%\yiaux.exe /w'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaux' = '%HOMEPATH%\yiaux.exe /e'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaux' = '%HOMEPATH%\yiaux.exe /t'
Creates the following files on removable media:
- <Drive name for removable media>:\Sexy.exe
- <Drive name for removable media>:\Porn.exe
- <Drive name for removable media>:\Passwords.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\yiaux.exe
- <Drive name for removable media>:\Secret.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Creates and executes the following:
- '%HOMEPATH%\yiaux.exe'
Modifies file system :
Creates the following files:
- %HOMEPATH%\c\Secret.exe
- %HOMEPATH%\c\Sexy.exe
- %HOMEPATH%\RCX6.tmp
- %HOMEPATH%\c\autorun.inf
- %HOMEPATH%\c\RCX7.tmp
- %HOMEPATH%\c\RCX9.tmp
- %HOMEPATH%\c\Passwords.exe
- %HOMEPATH%\c\Porn.exe
- %HOMEPATH%\c\RCX8.tmp
- %HOMEPATH%\RCX5.tmp
- %HOMEPATH%\Sexy.exe
- %HOMEPATH%\RCX1.tmp
- %HOMEPATH%\yiaux.exe
- %HOMEPATH%\Secret.exe
- %HOMEPATH%\Porn.exe
- %HOMEPATH%\Passwords.exe
- %HOMEPATH%\RCX4.tmp
- %HOMEPATH%\RCX2.tmp
- %HOMEPATH%\RCX3.tmp
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\yiaux.exe
- %HOMEPATH%\c\autorun.inf
- %HOMEPATH%\yiaux.exe
- <Drive name for removable media>:\autorun.inf
Deletes the following files:
- %HOMEPATH%\c\autorun.inf
- %HOMEPATH%\c\Porn.exe
- %HOMEPATH%\c\Passwords.exe
- %HOMEPATH%\c\Secret.exe
- %HOMEPATH%\c\Sexy.exe
- %HOMEPATH%\Porn.exe
- %HOMEPATH%\Sexy.exe
- %HOMEPATH%\Passwords.exe
- %HOMEPATH%\Secret.exe
Moves the following files:
- from %HOMEPATH%\c\RCX7.tmp to %HOMEPATH%\c\Sexy.exe
- from %HOMEPATH%\RCX6.tmp to %HOMEPATH%\Porn.exe
- from %HOMEPATH%\c\RCX9.tmp to %HOMEPATH%\c\Porn.exe
- from %HOMEPATH%\c\RCX8.tmp to %HOMEPATH%\c\Porn.exe
- from %HOMEPATH%\RCX5.tmp to %HOMEPATH%\Porn.exe
- from %HOMEPATH%\RCX2.tmp to %HOMEPATH%\Porn.exe
- from %HOMEPATH%\RCX1.tmp to %HOMEPATH%\Sexy.exe
- from %HOMEPATH%\RCX4.tmp to %HOMEPATH%\Sexy.exe
- from %HOMEPATH%\RCX3.tmp to %HOMEPATH%\Porn.exe
Network activity:
Connects to:
- 'ns#.##ytime2.com':7001
- 'ns#.##ytime2.net':7001
- 'ns#.##ytime2.org':7001
- 'ns#.##ytime1.com':7001
- 'ns#.##ytime1.net':7001
- 'ns#.##ytime1.org':7001
UDP:
- DNS ASK ns#.##ytime2.com
- DNS ASK ns#.##ytime2.net
- DNS ASK ns#.##ytime2.org
- DNS ASK ns#.##ytime1.com
- DNS ASK ns#.##ytime1.net
- DNS ASK ns#.##ytime1.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''