Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{AB6B17EA-B36E-AC05-ED6C-62DBD379AB81}] 'StubPath' = '%APPDATA%\ArbiBots.exe'
- [<HKCU>\Software\Microsoft\Active Setup\Installed Components\{AB6B17EA-B36E-AC05-ED6C-62DBD379AB81}] 'StubPath' = '%APPDATA%\ArbiBots.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Host' = '%APPDATA%\ArbiBots.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run] 'Windows Host' = '%APPDATA%\ArbiBots.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Host' = '%APPDATA%\ArbiBots.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\Autorun.ini
- <Drive name for removable media>:\<Virus name>.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\ArbiBots.exe' = '%APPDATA%\ArbiBots.exe:*:Enabled:Windows Messanger'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:Windows Messanger'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
Executes the following:
- <SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\ArbiBots.exe" /t REG_SZ /d "%APPDATA%\ArbiBots.exe:*:Enabled:Windows Messanger" /f
- <SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "<Full path to virus>" /t REG_SZ /d "<Full path to virus>:*:Enabled:Windows Messanger" /f
- <SYSTEM32>\reg.exe ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
Injects code into
the following system processes:
- %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
- %APPDATA%\data.dat
- %APPDATA%\ArbiBots.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\<Virus name>.exe
- <Drive name for removable media>:\Autorun.ini
- %APPDATA%\ArbiBots.exe
- <Full path to virus>
Network activity:
Connects to:
- 'en###.no-ip.info':3333
UDP:
- DNS ASK en###.no-ip.info
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'shell_traywnd' WindowName: ''