Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MSWUpdate' = '"%APPDATA%\lsass.exe"'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'MSWUpdate' = '"%APPDATA%\lsass.exe"'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'wextract_cleanup0' = 'rundll32.exe <SYSTEM32>\advpack.dll,DelNodeRunDLL32 ""%TEMP%\IXP000.TMP\""'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe "%APPDATA%\lsass.exe"'
Creates the following files on removable media:
- <Drive name for removable media>:\Autorun.inf
- <Drive name for removable media>:\SYSTEM.EXE
Malicious functions:
Creates and executes the following:
- %APPDATA%\lsass.exe /d "%TEMP%\svchost.exe"
Executes the following:
- <SYSTEM32>\netsh.exe firewall add allowedprogram program = %APPDATA%\lsass.exename = Nero mode = ENABLE
Modifies file system :
Creates the following files:
- %TEMP%\mrt3.tmp\kcfile.mfx
- %TEMP%\mrt3.tmp\Download.mfx
- %TEMP%\mrt3.tmp\KcActiveX.mfx
- %TEMP%\mrt3.tmp\mmfs2.dll
- %TEMP%\mrt3.tmp\kclist.mfx
- %TEMP%\mrt3.tmp\Registry2.mfx
- %APPDATA%\lsass.exe
- %TEMP%\mrt3.tmp\volume.mfx
- %TEMP%\IXP000.TMP\tubelist.dat
- %TEMP%\mrt3.tmp\Yaso.mfx
- %TEMP%\mrt3.tmp\kcwctrl.mfx
- %TEMP%\mrt3.tmp\kctaskpr.mfx
- %TEMP%\mrt3.tmp\stdrt.exe
- %TEMP%\IXP000.TMP\flex.exe
- %TEMP%\IXP000.TMP\pdvd.exe
- %TEMP%\IXP000.TMP\PowerDVD10.sim
- %TEMP%\Pdvd_Patch32.exe
- %TEMP%\svchost.exe
- %TEMP%\IXP000.TMP\CLAud.sim
- %TEMP%\mrt2.tmp\Registry2.mfx
- %TEMP%\mrt2.tmp\kcfile.mfx
- %TEMP%\mrt2.tmp\KcBoxA.mfx
- %TEMP%\mrt2.tmp\stdrt.exe
- %TEMP%\mrt2.tmp\mmfs2.dll
- %TEMP%\mrt2.tmp\KcBoxB.mfx
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Autorun.inf
- <Drive name for removable media>:\SYSTEM.EXE
- %APPDATA%\lsass.exe
Deletes the following files:
- %TEMP%\mrt3.tmp\Yaso.mfx
- %TEMP%\mrt3.tmp\KcActiveX.mfx
- %TEMP%\mrt3.tmp\Download.mfx
- %TEMP%\mrt3.tmp\volume.mfx
- %TEMP%\mrt3.tmp\kctaskpr.mfx
- %TEMP%\mrt3.tmp\kcwctrl.mfx
- %TEMP%\mrt3.tmp\mmfs2.dll
- %TEMP%\mrt3.tmp\stdrt.exe
- %TEMP%\svchost.exe
- %TEMP%\mrt3.tmp\kcfile.mfx
- %TEMP%\mrt3.tmp\Registry2.mfx
- %TEMP%\mrt3.tmp\kclist.mfx
Network activity:
Connects to:
- 't8#.#yndns.info':3175
- 'www.tu###kid.com':80
TCP:
HTTP GET requests:
- www.tu###kid.com/tubeapp/tubelist.dat
UDP:
- DNS ASK t8#.#yndns.info
- DNS ASK www.tu###kid.com
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: 'ibhikhii'
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: '' WindowName: 'HB'
