Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Live' = '<Full path to file>'
Malicious functions
To bypass firewall, removes or modifies the following registry keys
- [<HKLM>\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\winhost.exe' = '%TEMP%\winhost.exe:*:Enabled:Windows Messan...
- [<HKLM>\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\sys.exe' = '%APPDATA%\sys.exe:*:Enabled:Windows Messange...
- [<HKLM>\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
Injects code into
the following user processes:
- winhost.exe
Modifies file system
Creates the following files
- %TEMP%\winhost.exe
- %APPDATA%\sys.exe
- %APPDATA%\keylog
Network activity
UDP
- DNS ASK ch####o.zapto.org
- DNS ASK 1c####ro.zapto.org
Miscellaneous
Creates and executes the following
- '%TEMP%\winhost.exe'
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%TEMP%\winhost.exe" /t REG_SZ /d "%TEMP%\winhost.exe:*:E...' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\sys.exe" /t REG_SZ /d "%APPDATA%\sys.exe:*:Ena...' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%TEMP%\winhost.exe" /t REG_SZ /d "%TEMP%\winhost.exe:*:E...
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\sys.exe" /t REG_SZ /d "%APPDATA%\sys.exe:*:Ena...
- '%WINDIR%\syswow64\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%TEMP%\winhost.exe" /t REG_SZ /d "%TEMP%\winhost.exe:*:Enabled:...
- '%WINDIR%\syswow64\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\sys.exe" /t REG_SZ /d "%APPDATA%\sys.exe:*:Enabled:Wi...
- '%WINDIR%\syswow64\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
