Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'bd1fd84452cf3ae81433bb37393445e3' = '"%TEMP%\system.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bd1fd84452cf3ae81433bb37393445e3' = '"%TEMP%\system.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\bd1fd84452cf3ae81433bb37393445e3.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\system.exe' = '%TEMP%\system.exe:*:Enabled:system.exe'
Creates and executes the following:
- '%TEMP%\system.exe'
- '<LS_APPDATA>VKzPZiomlR.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\system.exe" "system.exe" ENABLE
- '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen <LS_APPDATA>WjnkGLRULM..jpg
Modifies file system :
Creates the following files:
- %TEMP%\system.exe
- %APPDATA%Microsoft\System\Services\18.exe
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
- <LS_APPDATA>WjnkGLRULM..jpg
- <LS_APPDATA>VKzPZiomlR.exe
- %HOMEPATH%\Recent\Local Settings.lnk
- %HOMEPATH%\Recent\Application DataWjnkGLRULM..lnk
Sets the 'hidden' attribute to the following files:
- %TEMP%\system.exe
- <LS_APPDATA>VKzPZiomlR.exe
Moves the following files:
- from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch
- from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch
Network activity:
Connects to:
- '17#.#9.21.220':5552
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'ShImgVw:CPreviewWnd' WindowName: '(null)'
