Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /C'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /k'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /P'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /v'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /z'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /h'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /e'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /J'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /Q'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /b'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /W'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /G'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /U'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /X'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /R'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /Y'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /f'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /l'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /s'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /n'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /t'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yiaame' = '%HOMEPATH%\yiaame.exe /a'
Creates the following files on removable media:
- <Drive name for removable media>:\Documents.lnk
- <Drive name for removable media>:\Passwords.lnk
- <Drive name for removable media>:\Pictures.lnk
- <Drive name for removable media>:\Video.lnk
- <Drive name for removable media>:\Music.lnk
- <Drive name for removable media>:\KUk.ico
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\yiaame.exe
- <Drive name for removable media>:\New Folder.lnk
- <Drive name for removable media>:\yiaamex.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%\yiaame.exe
Modifies file system :
Creates the following files:
- %HOMEPATH%\yiaame.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\yiaame.exe
- <Drive name for removable media>:\yiaamex.exe
- <Drive name for removable media>:\KUk.ico
- %HOMEPATH%\yiaame.exe
- <Drive name for removable media>:\autorun.inf
Network activity:
Connects to:
- 'ns#.##ayer1532.com':8000
UDP:
- DNS ASK ns#.##ayer1532.com
- '<Private IP address>':1034
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
