Win32.HLLW.Autoruner1.17796
Added to the Dr.Web virus database:
2012-06-24
Virus description added:
2012-07-14
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'wextract_cleanup0' = 'rundll32.exe <SYSTEM32>\advpack.dll,DelNodeRunDLL32 "%TEMP%\IXP000.TMP\"'
Creates the following files on removable media:
- <Drive name for removable media>:\qstkj.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\AuthorizedApplications\List] '%TEMP%\IXP000.TMP\COPYOF~1.EXE' = '%TEMP%\IXP000.TMP\COPYOF~1.EXE:*:Enabled:ipsec'
To complicate detection of its presence in the operating system,
forces the system hide from view:
blocks the following features:
- User Account Control (UAC)
Creates and executes the following:
- %TEMP%\IXP000.TMP\COPYOF~1.EXE
Executes the following:
Injects code into
the following system processes:
a large number of user processes.
Searches for windows to
detect analytical utilities:
- ClassName: '' WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
- ClassName: 'PROCMON_WINDOW_CLASS' WindowName: ''
- ClassName: '' WindowName: 'Registry Monitor - Sysinternals: www.sysinternals.com'
- ClassName: 'RegmonClass' WindowName: ''
- ClassName: '' WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
- ClassName: 'GBDYLLO' WindowName: ''
- ClassName: 'OLLYDBG' WindowName: ''
- ClassName: 'FilemonClass' WindowName: ''
- ClassName: 'pediy06' WindowName: ''
Hides the following processes:
- %TEMP%\IXP000.TMP\COPYOF~1.EXE
Modifies file system :
Creates the following files:
- <SYSTEM32>\Bifrost\server.exe
- %TEMP%\ewwkn.exe
- %TEMP%\IXP000.TMP\COPYOF~1.EXE
- %APPDATA%\addons.dat
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\qstkj.pif
- <SYSTEM32>\Bifrost\server.exe
- %APPDATA%\addons.dat
Deletes the following files:
Network activity:
Connects to:
- 'si#####ilent.no-ip.info':81
UDP:
- DNS ASK si#####ilent.no-ip.info
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: '18467-41' WindowName: ''
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