Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaumi' = '%HOMEPATH%\yiaumi.exe /k'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaumi' = '%HOMEPATH%\yiaumi.exe /w'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaumi' = '%HOMEPATH%\yiaumi.exe /v'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaumi' = '%HOMEPATH%\yiaumi.exe /g'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaumi' = '%HOMEPATH%\yiaumi.exe /y'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaumi' = '%HOMEPATH%\yiaumi.exe /q'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaumi' = '%HOMEPATH%\yiaumi.exe /b'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaumi' = '%HOMEPATH%\yiaumi.exe /p'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaumi' = '%HOMEPATH%\yiaumi.exe /m'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaumi' = '%HOMEPATH%\yiaumi.exe /o'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaumi' = '%HOMEPATH%\yiaumi.exe /i'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaumi' = '%HOMEPATH%\yiaumi.exe /x'
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>:\yiaumi.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%\yiaumi.exe'
Modifies file system :
Creates the following files:
- %HOMEPATH%\RCX7.tmp
- %HOMEPATH%\RCX8.tmp
- %HOMEPATH%\RCX5.tmp
- %HOMEPATH%\RCX6.tmp
- %HOMEPATH%\RCXB.tmp
- %HOMEPATH%\RCXC.tmp
- %HOMEPATH%\RCX9.tmp
- %HOMEPATH%\RCXA.tmp
- %HOMEPATH%\RCX4.tmp
- %HOMEPATH%\Sexy.exe
- %HOMEPATH%\RCX1.tmp
- %HOMEPATH%\yiaumi.exe
- %HOMEPATH%\Secret.exe
- %HOMEPATH%\RCX3.tmp
- %HOMEPATH%\Passwords.exe
- %HOMEPATH%\Porn.exe
- %HOMEPATH%\RCX2.tmp
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\yiaumi.exe
- <Drive name for removable media>:\autorun.inf
- %HOMEPATH%\yiaumi.exe
Deletes the following files:
- %HOMEPATH%\Passwords.exe
- %HOMEPATH%\Secret.exe
- %HOMEPATH%\Sexy.exe
- %HOMEPATH%\Porn.exe
Moves the following files:
- from %HOMEPATH%\RCX9.tmp to %HOMEPATH%\Porn.exe
- from %HOMEPATH%\RCX8.tmp to %HOMEPATH%\Porn.exe
- from %HOMEPATH%\RCX7.tmp to %HOMEPATH%\Sexy.exe
- from %HOMEPATH%\RCXC.tmp to %HOMEPATH%\Passwords.exe
- from %HOMEPATH%\RCXB.tmp to %HOMEPATH%\Passwords.exe
- from %HOMEPATH%\RCXA.tmp to %HOMEPATH%\Passwords.exe
- from %HOMEPATH%\RCX3.tmp to %HOMEPATH%\Porn.exe
- from %HOMEPATH%\RCX2.tmp to %HOMEPATH%\Porn.exe
- from %HOMEPATH%\RCX1.tmp to %HOMEPATH%\Sexy.exe
- from %HOMEPATH%\RCX6.tmp to %HOMEPATH%\Passwords.exe
- from %HOMEPATH%\RCX5.tmp to %HOMEPATH%\Passwords.exe
- from %HOMEPATH%\RCX4.tmp to %HOMEPATH%\Passwords.exe
Network activity:
Connects to:
- 'ns#.##ytime3.net':7005
- 'ns#.##ytime2.org':7005
- 'ns#.##ytime3.org':7005
- 'ns#.##ytime4.com':7005
- 'ns#.##ytime2.net':7005
- 'ns#.##ytime1.net':7005
- 'ns#.##ytime1.com':7005
- 'ns#.##ytime2.com':7005
- 'ns#.##ytime1.org':7005
UDP:
- DNS ASK ns#.##ytime3.net
- DNS ASK ns#.##ytime2.org
- DNS ASK ns#.##ytime3.org
- DNS ASK ns#.##ytime4.com
- DNS ASK ns#.##ytime2.net
- DNS ASK ns#.##ytime1.net
- DNS ASK ns#.##ytime1.com
- DNS ASK ns#.##ytime2.com
- DNS ASK ns#.##ytime1.org
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
