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Win32.HLLW.Autoruner.55970

Added to the Dr.Web virus database: 2011-08-10

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /G'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /V'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /P'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /d'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /L'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /X'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /a'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /j'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /U'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /n'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /S'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /T'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /r'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /c'
  • [<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\3326514336] 'Name' = '"%TEMP%\2.tmp"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /y'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /Q'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /w'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /k'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /i'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /M'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'cxdeay' = '%HOMEPATH%\cxdeay.exe /e'
Creates the following files on removable media:
  • <Drive name for removable media>:\Documents.lnk
  • <Drive name for removable media>:\Passwords.lnk
  • <Drive name for removable media>:\Pictures.lnk
  • <Drive name for removable media>:\Video.lnk
  • <Drive name for removable media>:\Music.lnk
  • <Drive name for removable media>:\snc.ico
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\cxdeay.exe
  • <Drive name for removable media>:\New Folder.lnk
  • <Drive name for removable media>:\cxdeayx.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Creates and executes the following:
  • %HOMEPATH%\joat.exe 
  • %HOMEPATH%\spooldx.exe (downloaded from the Internet) 
  • %HOMEPATH%\cxdeay.exe 
  • %HOMEPATH%\hoat.exe 
  • %HOMEPATH%\armast.exe 
  • %HOMEPATH%\fXCv98R5EJOxp7.exe 
  • %HOMEPATH%\goat.exe 
Executes the following:
  • <SYSTEM32>\tasklist.exe
Injects code into
the following system processes:
  • <SYSTEM32>\spoolsv.exe
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1A10' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{AEBA21FA-782A-4A90-978D-B72164C80120}' = ''
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{A8A88C49-5EB2-4990-A1A2-0876022C854F}' = ''
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'currentlevel' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'
Modifies file system :
Creates the following files:
  • %TEMP%\1.tmp
  • %HOMEPATH%\cxdeay.exe
  • %WINDIR%\Temp\3.tmp
  • %TEMP%\Rlb..bat
  • %HOMEPATH%\spooldx.exe
  • %HOMEPATH%\armast.dll
  • %HOMEPATH%\fXCv98R5EJOxp7.exe
  • %HOMEPATH%\armast.exe
  • %HOMEPATH%\goat.exe
  • %HOMEPATH%\joat.exe
  • %HOMEPATH%\hoat.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\cxdeay.exe
  • <Drive name for removable media>:\cxdeayx.exe
  • <Drive name for removable media>:\snc.ico
  • %HOMEPATH%\cxdeay.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • %HOMEPATH%\fXCv98R5EJOxp7.exe
  • %HOMEPATH%\hoat.exe
  • %WINDIR%\Temp\3.tmp
  • %TEMP%\2.tmp
  • <DRIVERS>\etc\hosts
Deletes itself.
Network activity:
Connects to:
  • 'bl###ound.in':80
  • 'ag###roosi.com':80
TCP:
HTTP GET requests:
  • ag###roosi.com/xxx
HTTP POST requests:
  • bl###ound.in/?in##############################################################################################################
UDP:
  • DNS ASK go##le.ae
  • DNS ASK bl###ound.in
  • DNS ASK ag###roosi.com
  • DNS ASK ik##.com
  • DNS ASK si###ell.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: 'Shell_TrayWnd' WindowName: ''