Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'K8box' = '"%ProgramFiles(x86)%\Kuai8\K8GM.exe" -background'
Malicious functions
Executes the following
- '%WINDIR%\syswow64\netsh.exe' firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\tool\K8RTLFix.exe" name="快吧运行库检测程序" mode=ENABLE scope=ALL
- '%WINDIR%\syswow64\netsh.exe' firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\K8DLPlatform.exe" name="快吧游戏下载平台" mode=ENABLE scope=ALL
- '%WINDIR%\syswow64\netsh.exe' firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\K8Flash.exe" name="快吧flash游戏程序" mode=ENABLE scope=ALL
- '%WINDIR%\syswow64\netsh.exe' firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\tool\K8PluginFix.exe" name="快吧下载故障检测程序" mode=ENABLE scope=ALL
- '%WINDIR%\syswow64\netsh.exe' firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\K8GM.exe" name="快吧游戏管理器" mode=ENABLE scope=ALL
Injects code into
the following system processes:
- %WINDIR%\explorer.exe
Modifies file system
Creates the following files
- %TEMP%\nsn72fe.tmp
- %ProgramFiles(x86)%\kuai8\tool\msvcr80.dll
- %ProgramFiles(x86)%\kuai8\tool_x64\k8shell.dll
- %ProgramFiles(x86)%\kuai8\tool_x64\k8shellicon.dll
- %ProgramFiles(x86)%\kuai8\tool\k8shell.dll
- %ProgramFiles(x86)%\kuai8\tool\k8shellicon.dll
- %APPDATA%\kuai8\data\database.gmx
- %APPDATA%\kuai8\data\plugin\top.gmx
- %APPDATA%\kuai8\data\plugin\scan.gmx
- %APPDATA%\kuai8\data\plugin\window.gmx
- %APPDATA%\kuai8\data\plugin\netwl.gmx
- %APPDATA%\kuai8\data\plugin\inwl.gmx
- %ProgramFiles(x86)%\kuai8\k8uirender.dll
- %APPDATA%\kuai8\data\plugin\pc.gmx
- %ProgramFiles(x86)%\kuai8\audio\complete.wav
- %TEMP%\gm~af51.tmp
- %APPDATA%\kuai8\update.ini
- %TEMP%\gm~b710.tmp
- %APPDATA%\microsoft\internet explorer\quick launch\user pinned\taskbar\快吧游戏.lnk
- %APPDATA%\microsoft\internet explorer\quick launch\快吧游戏.lnk
- %HOMEPATH%\desktop\快吧游戏.lnk
- %HOMEPATH%\desktop\快吧页游大厅.lnk
- %APPDATA%\microsoft\windows\start menu\programs\快吧游戏\快吧游戏.lnk
- %APPDATA%\microsoft\windows\start menu\programs\快吧游戏\快吧flash播放器.lnk
- %APPDATA%\microsoft\windows\start menu\programs\快吧游戏\快吧页游大厅.lnk
- %ProgramFiles(x86)%\kuai8\tool\microsoft.vc80.crt.manifest
- %ProgramFiles(x86)%\kuai8\tool\msvcp80.dll
- %ProgramFiles(x86)%\kuai8\tool\k8netdetect.exe
- %ProgramFiles(x86)%\kuai8\tool\k8pluginfix.exe
- %ProgramFiles(x86)%\kuai8\tool\k8rtlfix.exe
- %TEMP%\nsd730f.tmp\k8nsisminiextend.dll
- %ProgramFiles(x86)%\kuai8\k8gm.exe
- %ProgramFiles(x86)%\kuai8\k8flash.exe
- %ProgramFiles(x86)%\kuai8\k8browser.exe
- %ProgramFiles(x86)%\kuai8\k8web.exe
- %ProgramFiles(x86)%\kuai8\k8update.exe
- %ProgramFiles(x86)%\kuai8\k8version.dll
- %ProgramFiles(x86)%\kuai8\k8bugreport.exe
- %ProgramFiles(x86)%\kuai8\k8urlencrypt.dll
- %ProgramFiles(x86)%\kuai8\k8common.dll
- %ProgramFiles(x86)%\kuai8\k8dlutils.dll
- %APPDATA%\microsoft\windows\start menu\programs\快吧游戏\卸载快吧.lnk
- %APPDATA%\kuai8\data\plugin\search.gmx
- %ProgramFiles(x86)%\kuai8\k8dlplatform.exe
- %ProgramFiles(x86)%\kuai8\msvcp80.dll
- %ProgramFiles(x86)%\kuai8\msvcr80.dll
- %ProgramFiles(x86)%\kuai8\uninstall.exe
- %ProgramFiles(x86)%\kuai8\tool\k8restorewindow.dll
- %ProgramFiles(x86)%\kuai8\tool\k8bubble.exe
- %ProgramFiles(x86)%\kuai8\tool\k8common.dll
- %ProgramFiles(x86)%\kuai8\tool\k8uirender.dll
- %ProgramFiles(x86)%\kuai8\tool\k8dlutils.dll
- %ProgramFiles(x86)%\kuai8\tool\k8external.exe
- %ProgramFiles(x86)%\kuai8\tool\k8tray.exe
- %ProgramFiles(x86)%\kuai8\tool\k8minipage.exe
- %TEMP%\nsd730f.tmp\system.dll
- %ProgramFiles(x86)%\kuai8\microsoft.vc80.crt.manifest
- %APPDATA%\kuai8\location.ini
Deletes the following files
- %APPDATA%\kuai8\data\plugin\top.gmx
- %TEMP%\nsd730f.tmp\k8nsisminiextend.dll
- %TEMP%\nsd730f.tmp\system.dll
Substitutes the following files
- %APPDATA%\kuai8\data\plugin\top.gmx
Network activity
Connects to
- 'up####.kuai8box.com':80
- 'gm#.##ai8box.com':80
- 'st##.#uai8box.com':80
TCP
HTTP GET requests
- http://up####.kuai8box.com/update_top.php?da########################################################################################
- http://gm#.##ai8box.com/top/top_109_9.gmx
- http://up####.kuai8box.com/update_database.php?da########################################################################################
- http://gm#.##ai8box.com/database_new/database_197_6.gmx
- http://st##.#uai8box.com/stat.php?da####################################################################
- http://st##.#uai8box.com/stat.php?da#############################################################################################################################################################...
- http://up####.kuai8box.com/bubble_action.php?da##################################################################################################################################################...
HTTP POST requests
- http://st##.#uai8box.com/stat/do_stat.php?da######################################################################################################
UDP
- DNS ASK up####.kuai8box.com
- DNS ASK gm#.##ai8box.com
- DNS ASK st##.#uai8box.com
Miscellaneous
Searches for the following windows
- ClassName: 'GMBubbleWnd' WindowName: ''
- ClassName: 'GMKuaiBaWnd' WindowName: '快吧游戏'
- ClassName: '' WindowName: '快吧Flash游戏'
- ClassName: '' WindowName: '快吧网页游戏'
- ClassName: '' WindowName: '快吧游戏浏览器'
- ClassName: 'Progman' WindowName: 'Program Manager'
- ClassName: 'SHELLDLL_DefView' WindowName: ''
- ClassName: 'SysListView32' WindowName: 'FolderView'
Creates and executes the following
- '%ProgramFiles(x86)%\kuai8\k8gm.exe' -update_data
- '%ProgramFiles(x86)%\kuai8\k8update.exe' -install
- '%ProgramFiles(x86)%\kuai8\tool\k8bubble.exe' -query_action
- '%WINDIR%\syswow64\cmd.exe' /c netsh firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\K8GM.exe" name="快吧游戏管理器" mode=ENABLE scope=ALL' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c netsh firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\K8DLPlatform.exe" name="快吧游戏下载平台" mode=ENABLE scope=ALL' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c netsh firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\K8Flash.exe" name="快吧flash游戏程序" mode=ENABLE scope=ALL' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c netsh firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\tool\K8PluginFix.exe" name="快吧下载故障检测程序" mode=ENABLE scope=ALL' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c netsh firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\tool\K8RTLFix.exe" name="快吧运行库检测程序" mode=ENABLE scope=ALL' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /c netsh firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\K8GM.exe" name="快吧游戏管理器" mode=ENABLE scope=ALL
- '%WINDIR%\syswow64\cmd.exe' /c netsh firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\K8DLPlatform.exe" name="快吧游戏下载平台" mode=ENABLE scope=ALL
- '%WINDIR%\syswow64\cmd.exe' /c netsh firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\K8Flash.exe" name="快吧flash游戏程序" mode=ENABLE scope=ALL
- '%WINDIR%\syswow64\cmd.exe' /c netsh firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\tool\K8PluginFix.exe" name="快吧下载故障检测程序" mode=ENABLE scope=ALL
- '%WINDIR%\syswow64\cmd.exe' /c netsh firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\tool\K8RTLFix.exe" name="快吧运行库检测程序" mode=ENABLE scope=ALL
- '%WINDIR%\syswow64\regsvr32.exe' /s "%ProgramFiles(x86)%\Kuai8\tool_x64\K8Shell.dll"
- '<SYSTEM32>\regsvr32.exe' /s "%ProgramFiles(x86)%\Kuai8\tool_x64\K8Shell.dll"
- '%WINDIR%\syswow64\regsvr32.exe' /s "%ProgramFiles(x86)%\Kuai8\tool_x64\K8ShellIcon.dll"
- '<SYSTEM32>\regsvr32.exe' /s "%ProgramFiles(x86)%\Kuai8\tool_x64\K8ShellIcon.dll"
