Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /l'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /S'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /B'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /m'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /y'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /e'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /z'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /k'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /u'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /G'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /r'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /f'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /T'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /q'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /J'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /H'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /P'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /D'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoiob' = '%HOMEPATH%\yoiob.exe /c'
Creates the following files on removable media:
- <Drive name for removable media>:\Pictures.lnk
- <Drive name for removable media>:\Documents.lnk
- <Drive name for removable media>:\Video.lnk
- <Drive name for removable media>:\Music.lnk
- <Drive name for removable media>:\Passwords.lnk
- <Drive name for removable media>:\yoiob.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\New Folder.lnk
- <Drive name for removable media>:\yoiobx.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%\yoiob.exe
Modifies file system :
Creates the following files:
- %HOMEPATH%\yoiob.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\yoiob.exe
- <Drive name for removable media>:\yoiobx.exe
- %HOMEPATH%\yoiob.exe
- <Drive name for removable media>:\autorun.inf
Network activity:
Connects to:
- 'ns#.###eo-shares.com':8000
UDP:
- DNS ASK ns#.###eo-shares.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
