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Trojan.MulDrop26.38631

Added to the Dr.Web virus database: 2024-03-16

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [HKLM\SOFTWARE\Classes\WebClientAppV5\shell\open\command] '' = '%ProgramFiles%\WebClient_VPPlugin_v5\WebClientAppV5.exe ""'
  • [HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'WebClientAppV5' = '%ProgramFiles%\WebClient_VPPlugin_v5\WebClientAppV5.exe ""'
Malicious functions
Executes the following
  • '%WINDIR%\syswow64\taskkill.exe' /f /im "WebClientAppV5.exe"
Modifies file system
Creates the following files
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\delfile.exe
  • %ProgramFiles%\webclient_vpplugin_v5\skin\playspeed_1-32.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\playspeed_1-2.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\playspeed_1-16.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\hand.cur
  • %ProgramFiles%\webclient_vpplugin_v5\skin\grasp.cur
  • %ProgramFiles%\webclient_vpplugin_v5\skin\cursor_a.cur
  • %ProgramFiles%\webclient_vpplugin_v5\skin\camera_offline.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\audiostate.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\playspeed_1-4.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\addcursor.cur
  • %ProgramFiles%\webclient_vpplugin_v5\webclientappv5.exe
  • %ProgramFiles%\webclient_vpplugin_v5\webclientappcfg.xml
  • %ProgramFiles%\webclient_vpplugin_v5\uninstall.cmd
  • %ProgramFiles%\webclient_vpplugin_v5\setup.cmd
  • %ProgramFiles%\webclient_vpplugin_v5\npwebclient_vpplugin_v5.dll
  • %ProgramFiles%\webclient_vpplugin_v5\hi_mjpeg_dec_w.dll
  • %ProgramFiles%\webclient_vpplugin_v5\glew32.dll
  • %ProgramFiles%\webclient_vpplugin_v5\freeimage.dll
  • %ProgramFiles%\webclient_vpplugin_v5\webconfig.xml
  • %ProgramFiles%\webclient_vpplugin_v5\skin\rec_pos.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\zoomstate_9.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\playspeed_2.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\zoomstate_8.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\zoomstate_6.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\zoomstate_4.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\zoomstate_3_2.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\zoomstate_3.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\zoomstate_2.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\zoomstate_16.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\zoomstate_12.ico
  • %ProgramFiles%\webclient_vpplugin_v5\dvrth264.dll
  • %ProgramFiles%\webclient_vpplugin_v5\skin\rec_schedule.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\rec_motion.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\rec_manual.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\rec_inteligence.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\rec.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\ptz.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\playspeed_8.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\playspeed_4.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\playspeed_32.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\playspeed_1-8.ico
  • %ProgramFiles%\webclient_vpplugin_v5\skin\playspeed_16.ico
  • %ProgramFiles%\webclient_vpplugin_v5\delfile.exe
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\playspeed_8.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\playspeed_2.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\playspeed_16.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\playspeed_1-8.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\playspeed_1-4.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\playspeed_1-32.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\playspeed_1-2.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\playspeed_1-16.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\hand.cur
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\playspeed_32.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\grasp.cur
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\audiostate.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\addcursor.cur
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\setup.cmd
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\npwebclient_vpplugin_v5.dll
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\hi_mjpeg_dec_w.dll
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\glew32.dll
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\freeimage.dll
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\dvrth264.dll
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\cursor_a.cur
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\zoomstate_2.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\webconfig.xml
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\ptz.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\webclientappv5.exe
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\webclientappcfg.xml
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\uninstall.cmd
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\zoomstate_9.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\zoomstate_8.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\zoomstate_6.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\zoomstate_4.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\zoomstate_3_2.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\camera_offline.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\zoomstate_3.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\zoomstate_16.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\zoomstate_12.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\rec_schedule.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\rec_pos.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\rec_motion.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\rec_manual.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\rec_inteligence.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\rec.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\playspeed_4.ico
  • %HOMEPATH%\webclientappv5\log\webclientapp_0_1924_20240316125840.log
Deletes the following files
  • %ProgramFiles%\webclient_vpplugin_v5\setup.cmd
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\delfile.exe
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\dvrth264.dll
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\glew32.dll
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\setup.cmd
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\cursor_a.cur
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\grasp.cur
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\hand.cur
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\ptz.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\rec.ico
  • %ProgramFiles%\webclient_vpplugin_v5\webclient_vpplugin_v5\skin\rec_pos.ico
Miscellaneous
Searches for the following windows
  • ClassName: 'EDIT' WindowName: ''
  • ClassName: '' WindowName: ''
Creates and executes the following
  • '%ProgramFiles%\webclient_vpplugin_v5\webclientappv5.exe'
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c ""%ProgramFiles%\WebClient_VPPlugin_v5\WebClient_VPPlugin_v5\setup.cmd" "
  • '%WINDIR%\syswow64\xcopy.exe' "%ProgramFiles%\WebClient_VPPlugin_v5\WebClient_VPPlugin_v5\delFile.exe" "%ProgramFiles%\WebClient_VPPlugin_v5\" /e /y
  • '%WINDIR%\syswow64\xcopy.exe' "%ProgramFiles%\WebClient_VPPlugin_v5\WebClient_VPPlugin_v5\*.*" "%ProgramFiles%\WebClient_VPPlugin_v5\" /e /y
  • '%WINDIR%\syswow64\regsvr32.exe' /S "%ProgramFiles%\WebClient_VPPlugin_v5\npWebClient_VPPlugin_v5.dll"
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_CURRENT_USER\SOFTWARE\MozillaPlugins\@ocxPlugin/WebClient_VPPlugin_v5" /va /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_CURRENT_USER\SOFTWARE\MozillaPlugins\@ocxPlugin/WebClient_VPPlugin_v5" /v "Path" /t reg_sz /d "%ProgramFiles%\WebClient_VPPlugin_v5\npWebClient_VPPlugin_v5.dll" /f
  • '%WINDIR%\syswow64\reg.exe' delete "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WebClient_VPPlugin_v5" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WebClient_VPPlugin_v5" /v "DisplayName" /t reg_sz /d "WebClient_VPPlugin_v5" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WebClient_VPPlugin_v5" /v "UninstallString" /t reg_sz /d "%ProgramFiles%\WebClient_VPPlugin_v5\uninstall.cmd" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WebClientAppV5" /ve /t reg_sz /d "URL:WebClientAppV5 Protocol Handler" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WebClientAppV5" /v "URL Protocol" /t reg_sz /d "" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WebClientAppV5\shell" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WebClientAppV5\shell\open" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WebClientAppV5\shell\open\command" /ve /t reg_sz /d "%ProgramFiles%\WebClient_VPPlugin_v5\WebClientAppV5.exe \"\"" /f
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run" /v "WebClientAppV5" /t reg_sz /d "%ProgramFiles%\WebClient_VPPlugin_v5\WebClientAppV5.exe \"\"" /f
  • '<SYSTEM32>\rundll32.exe' <SYSTEM32>\FirewallControlPanel.dll,ShowNotificationDialog /configure /ETOnly 0 /OnProfiles 6 /OtherAllowed 0 /OtherBlocked 0 /OtherEdgeAllowed 0 /NewBlocked 4 "%ProgramFiles%\webclient_vpplugi...

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    • 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);
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