Win32.HLLW.Autoruner2.18953
Added to the Dr.Web virus database:
2015-01-11
Virus description added:
2015-01-11
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\RunOnce] '3md767cofr9g' = '%HOMEPATH%\3md767cofr9g\wrmuukte.vbs'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\start.lnk
Creates the following files on removable media:
- <Drive name for removable media>:\qswt.pif
- <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe' = '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe:*:Enabled:ipsec'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
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)
blocks the following features:
- User Account Control (UAC)
- Windows Security Center
Creates and executes the following:
- '%HOMEPATH%\3md767cofr9g\ucbczxbciruo.exe' odtmvrz
Executes the following:
- '<SYSTEM32>\wbem\wmiadap.exe' /R /T
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe'
Injects code into
the following system processes:
a large number of user processes.
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
Modifies file system :
Creates the following files:
- %HOMEPATH%\3md767cofr9g\run.vbs
- %HOMEPATH%\3md767cofr9g\wrmuukte.vbs
- %TEMP%\00034315_Rar\RegSvcs.exe
- %TEMP%\ytmsec.exe
- %HOMEPATH%\3md767cofr9g\ucbczxbciruo.exe
- %HOMEPATH%\3md767cofr9g\qxinuty.CPH
- %HOMEPATH%\3md767cofr9g\odtmvrz
- %HOMEPATH%\3md767cofr9g\ekl.cmd
- %HOMEPATH%\3md767cofr9g\jmsrtswbwe.LFC
Sets the 'hidden' attribute to the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\start.lnk
- %HOMEPATH%\3md767cofr9g\ekl.cmd
- <Drive name for removable media>:\qswt.pif
- <Drive name for removable media>:\autorun.inf
- %HOMEPATH%\3md767cofr9g\wrmuukte.vbs
- %HOMEPATH%\3md767cofr9g\ucbczxbciruo.exe
- %HOMEPATH%\3md767cofr9g\qxinuty.CPH
- %HOMEPATH%\3md767cofr9g\jmsrtswbwe.LFC
- %HOMEPATH%\3md767cofr9g\odtmvrz
Deletes the following files:
- <SYSTEM32>\wbem\Performance\WmiApRpl.ini
- %TEMP%\ytmsec.exe
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'EDIT' WindowName: ''
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