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Win32.HLLW.Autoruner1.12118
Added to the Dr.Web virus database:
2012-02-16
Virus description added:
2012-03-08
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '818141' = '<SYSTEM32>\CatRoot\818141.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '818141' = '<SYSTEM32>\CatRoot\818141.exe'
Substitutes the following executable system files:
<SYSTEM32>\dllcache\msconfig.exe with <SYSTEM32>\dllcache\msconfig.exe.new
<SYSTEM32>\dllcache\rstrui.exe with <SYSTEM32>\dllcache\rstrui.exe.new
<SYSTEM32>\dllcache\srdiag.exe with <SYSTEM32>\dllcache\srdiag.exe.new
%WINDIR%\pchealth\helpctr\binaries\msconfig.exe with %WINDIR%\pchealth\helpctr\binaries\msconfig.exe.new
<SYSTEM32>\Restore\rstrui.exe with <SYSTEM32>\Restore\rstrui.exe.new
<SYSTEM32>\Restore\srdiag.exe with <SYSTEM32>\Restore\srdiag.exe.new
Creates the following files on removable media:
<Drive name for removable media>:\Teddy Afro.exe
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\80482.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
blocks execution of the following system utilities:
Windows Task Manager (Taskmgr)
Registry Editor (RegEdit)
Executes the following:
<SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
<SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f
<SYSTEM32>\reg.exe delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot /f
<SYSTEM32>\cmd.exe /c ""%WINDIR%\ss.bat" "
<SYSTEM32>\reg.exe add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /v Hidden /t REG_DWORD /d 2 /f
<SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 1 /f
Modifies settings of Windows Explorer:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000001'
Modifies file system :
Creates the following files:
C:\autorun.inf
C:\Teddy Afro.exe
%WINDIR%\pchealth\helpctr\binaries\msconfig.exe.new
%ALLUSERSPROFILE%\Documents\Hot Ethiopian girls.exe
%ALLUSERSPROFILE%\Documents\Urgent.exe
C:\80482.exe
<SYSTEM32>\Restore\rstrui.exe.new
<SYSTEM32>\dllcache\rstrui.exe.new
<SYSTEM32>\dllcache\srdiag.exe.new
<SYSTEM32>\dllcache\srframe.mmf.new
<SYSTEM32>\Restore\srdiag.exe.new
<SYSTEM32>\Restore\srframe.mmf.new
<SYSTEM32>\dllcache\msconfig.exe.new
%ALLUSERSPROFILE%\Documents\Important Files.exe
%TEMP%\aut1.tmp
<SYSTEM32>\mler.a3x
%TEMP%\aut2.tmp
<SYSTEM32>\kls.ini
<SYSTEM32>\clin\80482.exe
<SYSTEM32>\CatRoot\818141.exe
<SYSTEM32>\cper.a3x
%WINDIR%\ss.bat
%ALLUSERSPROFILE%\Documents\Tedy Afro.exe
%ALLUSERSPROFILE%\Documents\New Folder.exe
%TEMP%\aut3.tmp
<SYSTEM32>\dwlr.a3x
<SYSTEM32>\clin\ax.log
Sets the 'hidden' attribute to the following files:
<SYSTEM32>\cper.a3x
<SYSTEM32>\dwlr.a3x
<SYSTEM32>\clin\ax.log
<SYSTEM32>\mler.a3x
<SYSTEM32>\kls.ini
<SYSTEM32>\CatRoot\818141.exe
<SYSTEM32>\clin\80482.exe
Deletes the following files:
<SYSTEM32>\Restore\rstrui.exe
<SYSTEM32>\Restore\srdiag.exe
<SYSTEM32>\Restore\srframe.mmf
<SYSTEM32>\Restore\MachineGuid.txt
%TEMP%\aut1.tmp
%TEMP%\aut2.tmp
%TEMP%\aut3.tmp
Moves the following system files:
from %WINDIR%\pchealth\helpctr\binaries\msconfig.exe to %WINDIR%\pchealth\helpctr\binaries\akr.exe
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: ''
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