Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cybansos' = '<SYSTEM32>\cyban.exe'
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\AVPsys] 'ImagePath' = '<DRIVERS>\cdaudio.sys'
Substitutes the following executable system files:
- <DRIVERS>\cdaudio.sys with <DRIVERS>\SET2.tmp
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\8qhu.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Executes the following:
- '%ProgramFiles%\Internet Explorer\IEXPLORE.EXE'
- '<SYSTEM32>\regsvr32.exe' /s <SYSTEM32>\ieban0.dll
Injects code into
the following system processes:
- %WINDIR%\Explorer.EXE
Installs hooks to intercept notifications
on keystrokes:
- Handler for all processes: <SYSTEM32>\cyban0.dll
Registers BHO:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{70F6E582-8FF4-4082-829E-C172131DE31A}']
Searches for windows to
bypass different anti-viruses:
- ClassName: 'AVP.Product_Notification' WindowName: ''
- ClassName: 'AVP.AlertDialog' WindowName: ''
Restores hooked functions in System Service Descriptor Table (SSDT).
Modifies file system:
Creates the following files:
- C:\8qhu.exe
- <SYSTEM32>\dllcache\cdaudio.sys.new
- C:\autorun.inf
- %TEMP%\ah1.rar
- %HOMEPATH%\Local Settings\<INETFILES>\Content.IE5\KHMHGZ4F\ah1[1].rar
- <SYSTEM32>\ieban0.dll
- <SYSTEM32>\cyban.exe
- <SYSTEM32>\cyban0.dll
- <DRIVERS>\SET2.tmp
- <DRIVERS>\SET1.tmp
Sets the 'hidden' attribute to the following files:
- C:\autorun.inf
- <Drive name for removable media>:\8qhu.exe
- <Drive name for removable media>:\autorun.inf
- <SYSTEM32>\cyban.exe
- <SYSTEM32>\cyban0.dll
- C:\8qhu.exe
Deletes the following files:
- C:\autorun.inf
- <Drive name for removable media>:\8qhu.exe
- <Drive name for removable media>:\autorun.inf
- C:\8qhu.exe
- <DRIVERS>\cdaudio.sys
- <DRIVERS>\SET1.tmp
- %TEMP%\ah1.rar
Deletes itself.
Network activity:
Connects to:
- 'www.ba###wda.com':80
- 'localhost':1036
TCP:
HTTP GET requests:
- http://www.ba###wda.com/1hg/ah1.rar
UDP:
- DNS ASK www.ba###wda.com
