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Win32.HLLW.Autoruner1.35846

Added to the Dr.Web virus database: 2013-04-28

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Command Processor] 'Autorun' = '<SYSTEM32>\cmd.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'CRNJEUFU@10.0.0.2' = 'domain.exe'
Creates or modifies the following files:
  • %WINDIR%\Tasks.exe
  • %HOMEPATH%\Start Menu\Programs\Startup\domain.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\iostream.exe
  • <Drive name for removable media>:\autorun.inf
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
  • file extensions
Creates and executes the following:
  • '<SYSTEM32>\win32\csrss.exe'
Executes the following:
  • '<SYSTEM32>\net1.exe' user root 3645923527
  • '<SYSTEM32>\net1.exe' localgroup %USERNAME%s root /add
  • '%WINDIR%\explorer.exe' /n, /root, <Current directory>\<Virus name>
  • '<SYSTEM32>\net1.exe' user root /add
Modifies settings of Windows Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NofolderOptions' = '00000001'
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
  • %WINDIR%\inf.exe
  • %WINDIR%\Installer.exe
  • %WINDIR%\ime.exe
  • %WINDIR%\Fonts.exe
  • %WINDIR%\Help.exe
  • %WINDIR%\java.exe
  • %WINDIR%\mui.exe
  • %WINDIR%\ocx.exe
  • %WINDIR%\msapps.exe
  • %WINDIR%\Media.exe
  • %WINDIR%\msagent.exe
  • %WINDIR%\ehome.exe
  • %WINDIR%\AppPatch.exe
  • %WINDIR%\assembly.exe
  • %WINDIR%\addins.exe
  • %WINDIR%\$NtUninstallKB942288-v3$.exe
  • %WINDIR%\$NtUninstallWIC$.exe
  • %WINDIR%\Config.exe
  • %WINDIR%\Downloaded Program Files.exe
  • %WINDIR%\Driver Cache.exe
  • %WINDIR%\Debug.exe
  • %WINDIR%\Connection Wizard.exe
  • %WINDIR%\Cursors.exe
  • %WINDIR%\twain_32.exe
  • %WINDIR%\Web.exe
  • %WINDIR%\Temp.exe
  • %WINDIR%\system.exe
  • <SYSTEM32>.exe
  • %WINDIR%\WinSxS.exe
  • %HOMEPATH%\My Documents\My Pictures.exe
  • %HOMEPATH%\My Documents\My Received Files.exe
  • %HOMEPATH%\My Documents\My Music.exe
  • %WINDIR%\<Auxiliary name>.exe
  • %HOMEPATH%\My Documents\Downloads.exe
  • %WINDIR%\srchasst.exe
  • %WINDIR%\Prefetch.exe
  • %WINDIR%\Provisioning.exe
  • %WINDIR%\PeerNet.exe
  • %WINDIR%\Offline Web Pages.exe
  • %WINDIR%\pchealth.exe
  • %WINDIR%\pss.exe
  • %WINDIR%\security.exe
  • %WINDIR%\SoftwareDistribution.exe
  • %WINDIR%\Resources.exe
  • %WINDIR%\Registration.exe
  • %WINDIR%\repair.exe
  • C:\Far2\Documentation.exe
  • C:\Far2\Encyclopedia.exe
  • C:\Far2\Addons.exe
  • %HOMEPATH%.exe
  • C:\Far2.exe
  • C:\Far2\FExcept.exe
  • %PROGRAM_FILES%.exe
  • %CommonProgramFiles%.exe
  • C:\<Auxiliary name>.exe
  • C:\Far2\Plugins.exe
  • C:\Far2\PluginSDK.exe
  • C:\Documents and Settings\NetworkService.exe
  • <SYSTEM32>\domain.exe
  • C:\autorun.inf
  • <Current directory>\autorun.inf
  • <SYSTEM32>\win32\csrss.exe
  • <SYSTEM32>\cmd.bat
  • C:\iostream.exe
  • C:\Documents and Settings\Default User.exe
  • C:\Documents and Settings\LocalService.exe
  • %ALLUSERSPROFILE%.exe
  • <Current directory>.exe
  • C:\Documents and Settings.exe
  • %PROGRAM_FILES%\Windows NT.exe
  • %PROGRAM_FILES%\WindowsUpdate.exe
  • %PROGRAM_FILES%\Windows Media Player.exe
  • %PROGRAM_FILES%\Reference Assemblies.exe
  • %PROGRAM_FILES%\Uninstall Information.exe
  • %PROGRAM_FILES%\xerox.exe
  • C:\System Volume Information.exe
  • %WINDIR%.exe
  • <Auxiliary element>
  • C:\RECYCLER.exe
  • C:\RECYCLER\S-1-5-21-2052111302-484763869-725345543-1003.exe
  • %PROGRAM_FILES%\Outlook Express.exe
  • %PROGRAM_FILES%\Messenger.exe
  • %PROGRAM_FILES%\microsoft frontpage.exe
  • %PROGRAM_FILES%\Internet Explorer.exe
  • %PROGRAM_FILES%\ComPlus Applications.exe
  • %PROGRAM_FILES%\FireFox.exe
  • %PROGRAM_FILES%\Movie Maker.exe
  • %PROGRAM_FILES%\NetMeeting.exe
  • %PROGRAM_FILES%\Online Services.exe
  • %PROGRAM_FILES%\MSN Gaming Zone.exe
  • %PROGRAM_FILES%\MSBuild.exe
  • %PROGRAM_FILES%\MSN.exe
Sets the 'hidden' attribute to the following files:
  • <Auxiliary element>
  • C:\iostream.exe
  • <Drive name for removable media>:\iostream.exe
  • <Drive name for removable media>:\autorun.inf
  • <Current directory>\autorun.inf
  • <SYSTEM32>\cmd.bat
  • C:\autorun.inf
  • <SYSTEM32>\win32\csrss.exe
Deletes the following files:
  • %WINDIR%\Installer.exe
  • %WINDIR%\java.exe
  • %WINDIR%\Media.exe
  • %WINDIR%\Help.exe
  • %WINDIR%\ime.exe
  • %WINDIR%\inf.exe
  • %WINDIR%\ocx.exe
  • %WINDIR%\Offline Web Pages.exe
  • %WINDIR%\pchealth.exe
  • %WINDIR%\msagent.exe
  • %WINDIR%\msapps.exe
  • %WINDIR%\mui.exe
  • %WINDIR%\assembly.exe
  • %WINDIR%\Config.exe
  • %WINDIR%\Connection Wizard.exe
  • %WINDIR%\$NtUninstallWIC$.exe
  • %WINDIR%\addins.exe
  • %WINDIR%\AppPatch.exe
  • %WINDIR%\Driver Cache.exe
  • %WINDIR%\ehome.exe
  • %WINDIR%\Fonts.exe
  • %WINDIR%\Cursors.exe
  • %WINDIR%\Debug.exe
  • %WINDIR%\Downloaded Program Files.exe
  • %WINDIR%\Web.exe
  • %WINDIR%\WinSxS.exe
  • %WINDIR%\<Auxiliary name>.exe
  • %WINDIR%\Tasks.exe
  • %WINDIR%\Temp.exe
  • %WINDIR%\twain_32.exe
  • %HOMEPATH%\My Documents\My Music.exe
  • %HOMEPATH%\My Documents\My Pictures.exe
  • %HOMEPATH%\My Documents\My Received Files.exe
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\iostream.exe
  • %HOMEPATH%\My Documents\Downloads.exe
  • %WINDIR%\pss.exe
  • %WINDIR%\Registration.exe
  • %WINDIR%\repair.exe
  • %WINDIR%\PeerNet.exe
  • %WINDIR%\Prefetch.exe
  • %WINDIR%\Provisioning.exe
  • %WINDIR%\srchasst.exe
  • %WINDIR%\system.exe
  • <SYSTEM32>.exe
  • %WINDIR%\Resources.exe
  • %WINDIR%\security.exe
  • %WINDIR%\SoftwareDistribution.exe
  • %WINDIR%\$NtUninstallKB942288-v3$.exe
  • C:\Far2\changelog_eng.exe
  • C:\Far2\Documentation.exe
  • C:\Far2\Encyclopedia.exe
  • C:\Far2.exe
  • C:\Far2\Addons.exe
  • C:\Far2\changelog.exe
  • C:\<Auxiliary name>.exe
  • <Auxiliary element>
  • C:\ntldr.exe
  • C:\Far2\FExcept.exe
  • C:\Far2\Plugins.exe
  • C:\Far2\PluginSDK.exe
  • C:\autorun.inf
  • C:\iostream.exe
  • <Current directory>.exe
  • <SYSTEM32>\csrss.exe
  • <SYSTEM32>\domain.exe
  • %HOMEPATH%\Start Menu\Programs\Startup\domain.exe
  • C:\Documents and Settings\LocalService.exe
  • C:\Documents and Settings\NetworkService.exe
  • %HOMEPATH%.exe
  • C:\Documents and Settings.exe
  • %ALLUSERSPROFILE%.exe
  • C:\Documents and Settings\Default User.exe
  • %PROGRAM_FILES%\Uninstall Information.exe
  • %PROGRAM_FILES%\Windows Media Player.exe
  • %PROGRAM_FILES%\Windows NT.exe
  • %PROGRAM_FILES%\Online Services.exe
  • %PROGRAM_FILES%\Outlook Express.exe
  • %PROGRAM_FILES%\Reference Assemblies.exe
  • C:\RECYCLER\S-1-5-21-2052111302-484763869-725345543-1003.exe
  • C:\System Volume Information.exe
  • %WINDIR%.exe
  • %PROGRAM_FILES%\WindowsUpdate.exe
  • %PROGRAM_FILES%\xerox.exe
  • C:\RECYCLER.exe
  • %PROGRAM_FILES%\FireFox.exe
  • %PROGRAM_FILES%\Internet Explorer.exe
  • %PROGRAM_FILES%\Messenger.exe
  • %PROGRAM_FILES%.exe
  • %CommonProgramFiles%.exe
  • %PROGRAM_FILES%\ComPlus Applications.exe
  • %PROGRAM_FILES%\MSN.exe
  • %PROGRAM_FILES%\MSN Gaming Zone.exe
  • %PROGRAM_FILES%\NetMeeting.exe
  • %PROGRAM_FILES%\microsoft frontpage.exe
  • %PROGRAM_FILES%\Movie Maker.exe
  • %PROGRAM_FILES%\MSBuild.exe
Moves the following files:
  • from <SYSTEM32>\win32\csrss.exe to <SYSTEM32>\win32\csrss.exe
Miscellaneous:
Searches for the following windows:
  • ClassName: 'MS_WebcheckMonitor' WindowName: ''
  • ClassName: 'MS_AutodialMonitor' WindowName: ''
  • ClassName: '' WindowName: ''