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Win32.HLLW.Autoruner.56317

Added to the Dr.Web virus database: 2011-08-14

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\wuauserv] 'Start' = '00000002'
Creates the following files on removable media:
  • <Drive name for removable media>:\RECYCLER\wmimgmt.com
  • <Drive name for removable media>:\RECYCLER\83C36927.db
  • <Drive name for removable media>:\RECYCLER\desktop.ini
  • <Drive name for removable media>:\~humbs.tmp
Malicious functions:
Creates and executes the following:
  • %ALLUSERSPROFILE%\Application Data\wmimgmt.exe 
  • "%TEMP%\pre3.tmp" (downloaded from the Internet)
Executes the following:
  • <SYSTEM32>\net1.exe user
  • <SYSTEM32>\net1.exe localgroup %USERNAME%s
  • <SYSTEM32>\tasklist.exe
  • <SYSTEM32>\chcp.com
  • <SYSTEM32>\notepad.exe ""%TEMP%\VMvareDnd.log""
  • <SYSTEM32>\rundll32.exe "<SYSTEM32>\wuausrv.dll",TStartUp 0x11
  • <SYSTEM32>\findstr.exe /s "YM.CGP_" "%HOMEPATH%"\..\*.txt
Modifies file system :
Creates the following files:
  • %TEMP%\INFO.TXT
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\[1].jpg
  • C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\S12NCXQ3\desktop.ini
  • C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\6IKXUSXU\desktop.ini
  • %WINDIR%\Temp\pre2.tmp
  • %ALLUSERSPROFILE%\DRM\Media\83C36927.db
  • %TEMP%\pre3.tmp
  • C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\2S23VNF7\[1].jpg
  • %TEMP%\avp.exe
  • <SYSTEM32>\wuausrv.dll
  • %TEMP%\temp.vih
  • %ALLUSERSPROFILE%\Application Data\wmimgmt.exe
  • C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\2S23VNF7\desktop.ini
  • C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\DLCC9LIA\desktop.ini
  • %TEMP%\drivers.p
  • %TEMP%\ghi.bat
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\RECYCLER\desktop.ini
  • <Drive name for removable media>:\AuToRUn.iNf
  • <Drive name for removable media>:\RECYCLER\83C36927.db
  • C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\6IKXUSXU\desktop.ini
  • C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\2S23VNF7\desktop.ini
  • C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\DLCC9LIA\desktop.ini
  • C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\S12NCXQ3\desktop.ini
Deletes the following files:
  • %TEMP%\avp.exe
  • %TEMP%\temp.vih
Network activity:
Connects to:
  • 'localhost':1041
  • 'localhost':1040
  • 'mi####oft.dumb1.com':80
TCP:
HTTP GET requests:
  • mi####oft.dumb1.com/update/.jpg
HTTP POST requests:
  • mi####oft.dumb1.comhttp://Microsoft.dumb1.com:80/PHqgHumeay5705.mp3
UDP:
  • DNS ASK no######olose.changeip.org
  • DNS ASK wpad.localdomain
  • DNS ASK Mi####oft.dumb1.com
  • DNS ASK windowsupdate.microsoft.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'MS_WINHELP' WindowName: ''
  • ClassName: 'Notepad' WindowName: ''