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Trojan.Siggen9.35895

Added to the Dr.Web virus database: 2020-04-09

Virus description added:

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\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\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\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\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
Modifies file system
Creates the following files
  • %TEMP%\nsy14e9.tmp
  • %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
  • %APPDATA%\kuai8\data\plugin\pc.gmx
  • %APPDATA%\kuai8\data\plugin\search.gmx
  • %ProgramFiles(x86)%\kuai8\audio\complete.wav
  • %ProgramFiles(x86)%\kuai8\microsoft.vc80.crt.manifest
  • %TEMP%\gm~5656.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
  • %APPDATA%\microsoft\windows\start menu\programs\快吧游戏\卸载快吧.lnk
  • %APPDATA%\kuai8\location.ini
  • %TEMP%\gmtemp\restart.gmt
  • %APPDATA%\kuai8\data\local\recent.xml
  • %APPDATA%\kuai8\data\local\user.xml
  • %ProgramFiles(x86)%\kuai8\tool\msvcr80.dll
  • %ProgramFiles(x86)%\kuai8\tool_x64\k8shell.dll
  • %ProgramFiles(x86)%\kuai8\tool\msvcp80.dll
  • %ProgramFiles(x86)%\kuai8\tool\microsoft.vc80.crt.manifest
  • %ProgramFiles(x86)%\kuai8\tool\k8netdetect.exe
  • %TEMP%\nsy14ea.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
  • %ProgramFiles(x86)%\kuai8\k8dlplatform.exe
  • %APPDATA%\kuai8\data\search.gms-journal
  • %APPDATA%\kuai8\update.ini
  • %ProgramFiles(x86)%\kuai8\k8uirender.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
  • %ProgramFiles(x86)%\kuai8\tool\k8rtlfix.exe
  • %ProgramFiles(x86)%\kuai8\tool\k8pluginfix.exe
  • %TEMP%\nsy14ea.tmp\system.dll
  • %ProgramFiles(x86)%\kuai8\msvcp80.dll
  • %APPDATA%\kuai8\data\search.gms
Deletes the following files
  • %APPDATA%\kuai8\data\plugin\top.gmx
  • %TEMP%\nsy14ea.tmp\k8nsisminiextend.dll
  • %TEMP%\nsy14ea.tmp\system.dll
  • %APPDATA%\kuai8\update.ini
  • %APPDATA%\kuai8\data\search.gms-journal
  • %APPDATA%\kuai8\data\plugin\window.gmx
Substitutes the following files
  • %APPDATA%\kuai8\data\plugin\top.gmx
  • %APPDATA%\kuai8\data\search.gms-journal
Network activity
TCP
HTTP GET requests
  • http://up####.kuai8box.com/update_top.php?da########################################################################################
  • http://gm#.##ai8box.com/top/top_95_2.gmx
  • http://up####.kuai8box.com/update_database.php?da######################################################################################
  • http://gm#.##ai8box.com/update_new/update_163_1/update162_7-163_1.xml
  • http://st##.#uai8box.com/stat.php?da####################################################################
  • http://st##.#uai8box.com/stat.php?da#############################################################################################################################################################...
  • http://up####.kuai8box.com/bubble_action.php?da##################################################################################################################################################...
  • http://yx#.##ai8box.com/recommend/hot.html
  • http://v2.####te.kuai8box.com/status?da##########################################################################################################################################################...
  • http://se#####.kuai8box.com/time.php?da########
HTTP POST requests
  • http://st##.#uai8box.com/stat/do_stat.php?da##########################################################################################################
  • http://up####.kuai8box.com/update_icon.php?da####################################################################
UDP
  • DNS ASK up####.kuai8box.com
  • DNS ASK gm#.##ai8box.com
  • DNS ASK st##.#uai8box.com
  • DNS ASK yx#.##ai8box.com
  • DNS ASK se#####.kuai8box.com
  • DNS ASK v2.####te.kuai8box.com
  • DNS ASK up#.##ai8box.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\k8gm.exe' -atonce
  • '%ProgramFiles(x86)%\kuai8\tool\k8bubble.exe' -query_action
  • '%ProgramFiles(x86)%\kuai8\k8update.exe' -update -delay=3 -type=1
  • '%ProgramFiles(x86)%\kuai8\k8update.exe' -installrun
  • '%ProgramFiles(x86)%\kuai8\tool\k8minipage.exe' -miniurl="http://mi##.91nzh.com/mini3/index-nx.html" -minititle="4" -miniwidth="750" -miniheight="500" -mininewpage="2" -delay="2" -silence="1" -topmost="3" -without="1" -menu="2" -title_text="...
  • '%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\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\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\tool\K8RTLFix.exe" name="快吧运行库检测程序" mode=ENABLE scope=ALL' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /c netsh firewall add allowedprogram program="%ProgramFiles(x86)%\Kuai8\tool\K8PluginFix.exe" name="快吧下载故障检测程序" mode=ENABLE scope=ALL' (with hidden window)
  • '%ProgramFiles(x86)%\kuai8\k8update.exe' -update -delay=3 -type=1' (with hidden window)
  • '%ProgramFiles(x86)%\kuai8\k8update.exe' -installrun' (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\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\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\tool\K8RTLFix.exe" name="快吧运行库检测程序" 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\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"

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

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  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android