Win32.HLLW.Autoruner1.28901
Added to the Dr.Web virus database:
2012-10-28
Virus description added:
2012-10-28
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{9B71D88C-C598-4935-C5D1-43AA4DB90836}] 'stubpath' = ''
Creates the following files on removable media:
- <Drive name for removable media>:\ydbu.cmd
- <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] 'DisableNotifications' = '00000001'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\Explorer.EXE' = '%WINDIR%\Explorer.EXE:*:Enabled:ipsec'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\server.exe' = '%TEMP%\server.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:
Executes the following:
- <SYSTEM32>\rundll32.exe <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %TEMP%\553385_10151128054603440_1516642967_n.jpg
Injects code into
the following system processes:
a large number of user processes.
Modifies file system :
Creates the following files:
- %TEMP%\winhpedj.exe
- %TEMP%\winqxfib.exe
- <DRIVERS>\immkk.sys
- %TEMP%\server.exe
- %TEMP%\553385_10151128054603440_1516642967_n.jpg
- <SYSTEM32>\Bifrost\server.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\ydbu.cmd
- <Drive name for removable media>:\autorun.inf
Deletes the following files:
- %TEMP%\winhpedj.exe
- %TEMP%\winqxfib.exe
- %TEMP%\server.exe
- <DRIVERS>\immkk.sys
Network activity:
Connects to:
- 'ha#####012.no-ip.biz':81
UDP:
- DNS ASK ha#####012.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'ShImgVw:CPreviewWnd' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
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