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Win32.HLLW.Autoruner1.54843
Added to the Dr.Web virus database:
2013-08-28
Virus description added:
2013-08-28
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '08f4dc96bbb7af09d1a37fe35c75a42f' = '"%TEMP%\explorer.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '08f4dc96bbb7af09d1a37fe35c75a42f' = '"%TEMP%\explorer.exe" ..'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\08f4dc96bbb7af09d1a37fe35c75a42f.exe
%HOMEPATH%\Start Menu\Programs\Startup\svchost.exe
Creates the following files on removable media:
<Drive name for removable media>:\Bloc-notes.exe.lnk
<Drive name for removable media>:\RCX5.tmp
<Drive name for removable media>:\08f4dc96bbb7af09d1a37fe35c75a42f_backup.exe
<Drive name for removable media>:\08f4dc96bbb7af09d1a37fe35c75a42f.exe
<Drive name for removable media>:\Bloc-notes.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\explorer.exe' = '%TEMP%\explorer.exe:*:Enabled:explorer.exe'
Creates and executes the following:
'%TEMP%\explorer.exe'
'%TEMP%\svchost.exe'
'%TEMP%\08f4dc96bbb7af09d1a37fe35c75a42f.exe'
Executes the following:
'%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\obskkcht.cmdline"
'%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES4.tmp" "%TEMP%\vbc3.tmp"
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\explorer.exe" "explorer.exe" ENABLE
'%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\jfxsv-z3.cmdline"
'%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2.tmp" "%TEMP%\vbc1.tmp"
Modifies file system :
Creates the following files:
%TEMP%\eFvTCC.resources
%TEMP%\whatdafock.txt
%TEMP%\swAxb.resources
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
%TEMP%\jfxsv-z3.exe
%TEMP%\obskkcht.0.vb
%TEMP%\RES4.tmp
%TEMP%\windowsupdate.ico
%TEMP%\vbc3.tmp
%TEMP%\obskkcht.cmdline
%TEMP%\obskkcht.out
%TEMP%\RES2.tmp
%TEMP%\Mz686818.resources
%TEMP%\MSNPSharp.dll
%TEMP%\svchost.exe
%TEMP%\Jx.resources
%TEMP%\08f4dc96bbb7af09d1a37fe35c75a42f.exe
%TEMP%\jfxsv-z3.0.vb
%TEMP%\vbc1.tmp
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
%TEMP%\explorer.exe
%TEMP%\jfxsv-z3.cmdline
%TEMP%\jfxsv-z3.out
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\Bloc-notes.exe
<Drive name for removable media>:\08f4dc96bbb7af09d1a37fe35c75a42f.exe
Deletes the following files:
%TEMP%\obskkcht.0.vb
%TEMP%\swAxb.resources
%TEMP%\obskkcht.cmdline
%TEMP%\obskkcht.out
%TEMP%\windowsupdate.ico
<Drive name for removable media>:\08f4dc96bbb7af09d1a37fe35c75a42f.exe
%TEMP%\eFvTCC.resources
<Drive name for removable media>:\08f4dc96bbb7af09d1a37fe35c75a42f_backup.exe
%TEMP%\jfxsv-z3.out
%TEMP%\jfxsv-z3.cmdline
%TEMP%\RES2.tmp
%TEMP%\vbc1.tmp
%TEMP%\RES4.tmp
%TEMP%\vbc3.tmp
%TEMP%\jfxsv-z3.exe
%TEMP%\jfxsv-z3.0.vb
Moves the following files:
from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch
from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch
Network activity:
Connects to:
'su####.no-ip.org':7711
'17#.#3.169.14':80
UDP:
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: '(null)'
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