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Win32.HLLW.Autoruner.52792

Added to the Dr.Web virus database: 2011-06-28

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'xaeoyi' = '%HOMEPATH%\xaeoyi.exe /Z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'xaeoyi' = '%HOMEPATH%\xaeoyi.exe /B'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'xaeoyi' = '%HOMEPATH%\xaeoyi.exe /l'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'xaeoyi' = '%HOMEPATH%\xaeoyi.exe /T'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'xaeoyi' = '%HOMEPATH%\xaeoyi.exe /r'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'xaeoyi' = '%HOMEPATH%\xaeoyi.exe /q'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'xaeoyi' = '%HOMEPATH%\xaeoyi.exe /Y'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'xaeoyi' = '%HOMEPATH%\xaeoyi.exe /x'
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>:\VTk.ico
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\xaeoyi.exe
  • <Drive name for removable media>:\New Folder.lnk
  • <Drive name for removable media>:\xaeoyix.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%\xaeoyi.exe 
  • %HOMEPATH%\yellow.exe 
  • %HOMEPATH%\Xb9av52mbo.exe 
Executes the following:
  • <SYSTEM32>\tasklist.exe
Modifies file system :
Creates the following files:
  • %HOMEPATH%\xaeoyi.exe
  • %TEMP%\Rlb..bat
  • %HOMEPATH%\Xb9av52mbo.exe
  • %HOMEPATH%\yellow.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\xaeoyi.exe
  • <Drive name for removable media>:\xaeoyix.exe
  • <Drive name for removable media>:\VTk.ico
  • %HOMEPATH%\xaeoyi.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • %HOMEPATH%\yellow.exe
Network activity:
Connects to:
  • 'mo###owse.in':80
TCP:
HTTP POST requests:
  • mo###owse.in/oiwedmweoid.php?in##############################################################################################################
UDP:
  • DNS ASK go##le.ae
  • DNS ASK mo###owse.in
  • DNS ASK ik##.com
  • DNS ASK si###ell.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''