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Win32.HLLW.Autoruner.56656
Added to the Dr.Web virus database:
2011-08-19
Virus description added:
2011-08-20
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'koufa' = '%HOMEPATH%\koufa.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'koufa' = '%HOMEPATH%\koufa.exe /D'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'koufa' = '%HOMEPATH%\koufa.exe /e'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'koufa' = '%HOMEPATH%\koufa.exe /M'
[<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\1969432224] 'Name' = '"%TEMP%\2.tmp"'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Sxikihuvuw' = 'rundll32.exe "%WINDIR%\iapngl.dll",Startup'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'koufa' = '%HOMEPATH%\koufa.exe /U'
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>:\tjDU.ico
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\koufa.exe
<Drive name for removable media>:\New Folder.lnk
<Drive name for removable media>:\koufax.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
Creates and executes the following:
%HOMEPATH%\teal.exe
%HOMEPATH%\rentsvr.exe (downloaded from the Internet)
%HOMEPATH%\koufa.exe
%HOMEPATH%\qqo9L6YpB3.exe
%HOMEPATH%\real.exe
%HOMEPATH%\seal.exe
Executes the following:
<SYSTEM32>\tasklist.exe
<SYSTEM32>\rundll32.exe "%WINDIR%\iapngl.dll",Startup
Injects code into
the following system processes:
Modifies settings of Windows Internet Explorer:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1208' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1200' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1001' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2000' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1405' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1209' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'currentlevel' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{A8A88C49-5EB2-4990-A1A2-0876022C854F}' = ''
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{AEBA21FA-782A-4A90-978D-B72164C80120}' = ''
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1A10' = '00000000'
Modifies file system :
Creates the following files:
%HOMEPATH%\koufa.exe
%TEMP%\1.tmp
%HOMEPATH%\rentsvr.exe
%WINDIR%\Temp\3.tmp
%WINDIR%\iapngl.dll
%HOMEPATH%\real.exe
%HOMEPATH%\qqo9L6YpB3.exe
%HOMEPATH%\teal.exe
%HOMEPATH%\seal.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\koufa.exe
<Drive name for removable media>:\koufax.exe
<Drive name for removable media>:\tjDU.ico
%HOMEPATH%\koufa.exe
<Drive name for removable media>:\autorun.inf
Deletes the following files:
%WINDIR%\Temp\3.tmp
%HOMEPATH%\qqo9L6YpB3.exe
%TEMP%\2.tmp
<DRIVERS>\etc\hosts
Deletes itself.
Network activity:
Connects to:
TCP:
UDP:
DNS ASK st####banners.com
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: ''
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