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Win32.HLLW.Autoruner.53920

Added to the Dr.Web virus database: 2011-07-10

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /X'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /R'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /k'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /E'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /Q'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /d'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /Z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /T'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /W'
  • [<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\1012747624] 'Name' = '"%TEMP%\3.tmp"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /g'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /U'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /L'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wioep' = '%HOMEPATH%\wioep.exe /N'
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>:\DlU.ico
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\wioep.exe
  • <Drive name for removable media>:\New Folder.lnk
  • <Drive name for removable media>:\wioepx.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%\wexhost.exe 
  • %HOMEPATH%\wioep.exe 
  • %HOMEPATH%\zusvc.exe 
  • %HOMEPATH%\ZSzXlarNXai5.exe 
  • %HOMEPATH%\ztsvc.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%\2.tmp
  • %HOMEPATH%\wioep.exe
  • %TEMP%\Rlb..bat
  • %WINDIR%\Temp\4.tmp
  • %HOMEPATH%\wexhost.dll
  • %HOMEPATH%\ZSzXlarNXai5.exe
  • %HOMEPATH%\wexhost.exe
  • %HOMEPATH%\zusvc.exe
  • %HOMEPATH%\ztsvc.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\wioep.exe
  • <Drive name for removable media>:\wioepx.exe
  • <Drive name for removable media>:\DlU.ico
  • %HOMEPATH%\wioep.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • %HOMEPATH%\ztsvc.exe
  • %HOMEPATH%\ZSzXlarNXai5.exe
  • %WINDIR%\Temp\4.tmp
  • %TEMP%\3.tmp
  • <DRIVERS>\etc\hosts
Network activity:
Connects to:
  • 'di##opic.in':80
TCP:
HTTP POST requests:
  • di##opic.in/?in##############################################################################################################
UDP:
  • DNS ASK go##le.ae
  • DNS ASK di##opic.in
  • DNS ASK ik##.com
  • DNS ASK si###ell.com
Miscellaneous:
Searches for the following windows:
  • ClassName: '2135662649' WindowName: '1290275105'
  • ClassName: '1766042137' WindowName: '316127874'
  • ClassName: '541439229' WindowName: '647708403'
  • ClassName: '394590785' WindowName: '1756556105'
  • ClassName: '1016643808' WindowName: '24627301'
  • ClassName: '960102625' WindowName: '430066279'
  • ClassName: '1008701429' WindowName: '579381198'
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: '1922351159' WindowName: '834969880'
  • ClassName: '1306694165' WindowName: '494171248'
  • ClassName: '1289083711' WindowName: '591301186'
  • ClassName: '637670480' WindowName: '1997006738'
  • ClassName: '1928457052' WindowName: '1124191955'
  • ClassName: '555445440' WindowName: '933536709'
  • ClassName: '716153120' WindowName: '1904666530'
  • ClassName: '460496605' WindowName: '101929043'
  • ClassName: '27151573' WindowName: '1046861870'
  • ClassName: '576333287' WindowName: '311040901'
  • ClassName: '540800710' WindowName: '2057465314'
  • ClassName: '1615307858' WindowName: '280839073'
  • ClassName: '1710672108' WindowName: '1893229219'
  • ClassName: '890570268' WindowName: '2037912208'
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