Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'wextract_cleanup0' = 'rundll32.exe <SYSTEM32>\advpack.dll,DelNodeRunDLL32 ""%TEMP%\IXP000.TMP\""'
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\BITS] 'Start' = '00000002'
Malicious functions:
Executes the following:
- <SYSTEM32>\net1.exe start bits
- <SYSTEM32>\ntvdm.exe -f -i1
Modifies file system :
Creates the following files:
- %TEMP%\IXP000.TMP\r.bat
- %WINDIR%\Temp\scs3.tmp
- %WINDIR%\Temp\scs4.tmp
- %TEMP%\IXP000.TMP\w.bat
- %TEMP%\nsd2.tmp\SetupX.exe
- %TEMP%\nsd2.tmp\downloader.exe
- %TEMP%\IXP000.TMP\lsass
Deletes the following files:
- %WINDIR%\Temp\scs3.tmp
- %WINDIR%\Temp\scs4.tmp
- %TEMP%\nsd2.tmp\downloader.exe
- %TEMP%\nsd2.tmp\SetupX.exe
Network activity:
Connects to:
- 'www.dn##ax.com':80
- 'localhost':1035
TCP:
HTTP GET requests:
- www.dn##ax.com/9292009/svchost.exe
UDP:
- DNS ASK www.dn##ax.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'ConsoleWindowClass' WindowName: 'ntvdm-ae8.aec.390001'
