Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /s'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /y'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /j'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /k'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /o'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /f'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /d'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /v'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /u'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /m'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /t'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /x'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /r'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /w'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /z'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /i'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /q'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /h'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /e'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /l'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /g'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /n'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /b'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /p'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /c'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaoj' = '%HOMEPATH%\yiaoj.exe /a'
Creates the following files on removable media:
- <Drive name for removable media>:\Passwords.exe
- <Drive name for removable media>:\RCX3.tmp
- <Drive name for removable media>:\RCX2.tmp
- <Drive name for removable media>:\RCX6.tmp
- <Drive name for removable media>:\RCX5.tmp
- <Drive name for removable media>:\RCX4.tmp
- <Drive name for removable media>:\Secret.exe
- <Drive name for removable media>:\yiaoj.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Porn.exe
- <Drive name for removable media>:\RCX1.tmp
- <Drive name for removable media>:\Sexy.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%\yiaoj.exe
Modifies file system :
Creates the following files:
- %HOMEPATH%\yiaoj.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\yiaoj.exe
- <Drive name for removable media>:\autorun.inf
- %HOMEPATH%\yiaoj.exe
Deletes the following files:
- <Drive name for removable media>:\Passwords.exe
- <Drive name for removable media>:\Porn.exe
- <Drive name for removable media>:\Sexy.exe
Network activity:
Connects to:
- 'ns#.##lpupdates.com':8000
- 'ns#.##lpupdates.biz':8000
- 'ns#.##lpupdates.org':8000
- 'ns#.###pupdates.info':8000
- 'ns#.##lpupdates.net':8000
UDP:
- DNS ASK ns#.##lpupdates.com
- DNS ASK ns#.##lpupdates.biz
- DNS ASK ns#.##lpupdates.org
- DNS ASK ns#.###pupdates.info
- DNS ASK ns#.##lpupdates.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''