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Trojan.DownLoader26.904

Added to the Dr.Web virus database: 2017-12-14

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] '{e6e75766-da0f-4ba2-9788-6ea593ce702d}' = '"%ALLUSERSPROFILE%\Application Data\Package Cache\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\v...
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\caloa agent service 1.5] 'ImagePath' = '%ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\pcvisit_client.exe --StartMode AsService'
  • [<HKLM>\SYSTEM\ControlSet001\Services\caloa agent service 1.5] 'ImagePath' = '%ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\pcvisit_client.exe'
  • [<HKLM>\SYSTEM\ControlSet001\Services\caloa agent service 1.5] 'Start' = '00000002'
Modifies file system:
Creates the following files:
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\MAPPING.VER
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\cab54A5CABBE7274D8A22EB58060AAB7623
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\MAPPING1.MAP
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\vcRuntimeMinimum_x86
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\vcRuntimeAdditional_x86
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\INDEX.MAP
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\MAPPING2.MAP
  • %WINDIR%\Installer\2d586.msi
  • %WINDIR%\Installer\2d588.ipi
  • %WINDIR%\Installer\MSI6.tmp
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\OBJECTS.DATA
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\cabB3E1576D1FEFBB979E13B1A5379E0B16
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\OBJECTS.MAP
  • %ALLUSERSPROFILE%\Application Data\Package Cache\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\state.rsm
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_.DEFAULT
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_MACHINE_SECURITY
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_MACHINE_SOFTWARE
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_USRCLASS_S-1-5-20
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_NTUSER_S-1-5-21-2052111302-484763869-725345543-1003
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_USRCLASS_S-1-5-21-2052111302-484763869-725345543-1003
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_MACHINE_SYSTEM
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\$WinMgmt.CFG
  • %ALLUSERSPROFILE%\Application Data\Package Cache\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\vcredist_x86.exe
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\Repository\FS\INDEX.BTR
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_MACHINE_SAM
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\ComDb.Dat
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\domain.txt
  • <SYSTEM32>\mfc120jpn.dll
  • <SYSTEM32>\mfc120kor.dll
  • <SYSTEM32>\mfc120rus.dll
  • <SYSTEM32>\mfc120esn.dll
  • <SYSTEM32>\mfc120fra.dll
  • <SYSTEM32>\mfc120ita.dll
  • <SYSTEM32>\mfc120u.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\uninstall.exe
  • %TEMP%\nsn5.tmp\SimpleSC.dll
  • %ALLUSERSPROFILE%\Start Menu\Programs\pcvisit Software\pcvisit RemoteHost 15.0\Uninstall.lnk
  • <SYSTEM32>\mfcm120.dll
  • <SYSTEM32>\mfcm120u.dll
  • %WINDIR%\Installer\2d58f.msi
  • <SYSTEM32>\mfc120enu.dll
  • <SYSTEM32>\vcomp120.dll
  • %WINDIR%\Installer\2d58a.msi
  • %WINDIR%\Installer\2d58b.msi
  • C:\Config.Msi\2d589.rbs
  • <SYSTEM32>\msvcp120.dll
  • <SYSTEM32>\msvcr120.dll
  • %WINDIR%\Installer\2d58d.ipi
  • <SYSTEM32>\mfc120chs.dll
  • <SYSTEM32>\mfc120cht.dll
  • <SYSTEM32>\mfc120deu.dll
  • %WINDIR%\Installer\MSI9.tmp
  • C:\Config.Msi\2d58e.rbs
  • <SYSTEM32>\mfc120.dll
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_NTUSER_S-1-5-20
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\shared_app_elements_de.qm
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\shared_app_elements_en.qm
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\client.exe
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\pcvisit_client_de.qm
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\pcvisit_client_en.qm
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\qtbase_de.qm
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\pcvisit_15_km_starter.exe
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\vcredist_x86.exe
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\libeay32.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\msvcp120.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\pcvisit_client.exe
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\pcvvncserver.exe
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\vcredist_x64.exe
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\application_en.qm
  • %TEMP%\nsn5.tmp\System.dll
  • %TEMP%\nsn5.tmp\AccessControl.dll
  • %TEMP%\nsn5.tmp\nsislog.dll
  • %TEMP%\1.tmp\2.bat
  • <Current directory>\pcvisit_RemoteHost_15_Setup.exe
  • %TEMP%\nsn5.tmp\UserInfo.dll
  • %ALLUSERSPROFILE%\Application Data\pcvisit Software AG\caloa\Logging\13_12_2017_144017_install.log
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\CommandLineInstallAndStart.txt
  • %TEMP%\nsn5.tmp\nsis7z.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\application_de.qm
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\pcvRh.7z
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\imageformats\pcvRhAddAssets.7z
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\platforms\pcvRhAddPlatformAssets.7z
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.ba1\wixstdba.dll
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.ba1\thm.xml
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.ba1\thm.wxl
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\imageformats\qjpeg.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\imageformats\qsvg.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\platforms\qwindows.dll
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.ba1\logo.png
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_NTUSER_S-1-5-18
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_NTUSER_S-1-5-19
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\RP16\snapshot\_REGISTRY_USER_USRCLASS_S-1-5-19
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.ba1\license.rtf
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.ba1\BootstrapperApplicationData.xml
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.be\vcredist_x86.exe
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\imageformats\qico.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\Qt5Network.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\Qt5Svg.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\Qt5Widgets.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\msvcr120.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\Qt5Core.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\Qt5Gui.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\remoteProcStart_x64.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\wodKeys.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\wodTunnel.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\imageformats\qgif.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\remoteProcStart_x86.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\ssleay32.dll
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\wodFTPD.dll
Deletes the following files:
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.ba1\thm.wxl
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.ba1\thm.xml
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.ba1\wixstdba.dll
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.ba1\BootstrapperApplicationData.xml
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.ba1\license.rtf
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.ba1\logo.png
  • %TEMP%\nsn5.tmp\SimpleSC.dll
  • %TEMP%\nsn5.tmp\System.dll
  • %TEMP%\nsn5.tmp\UserInfo.dll
  • %TEMP%\nsn5.tmp\AccessControl.dll
  • %TEMP%\nsn5.tmp\nsis7z.dll
  • %TEMP%\nsn5.tmp\nsislog.dll
  • %WINDIR%\Installer\MSI6.tmp
  • C:\Config.Msi\2d589.rbs
  • %WINDIR%\Installer\2d586.msi
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\imageformats\pcvRhAddAssets.7z
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\pcvRh.7z
  • %ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\platforms\pcvRhAddPlatformAssets.7z
  • %WINDIR%\Installer\2d58b.msi
  • %WINDIR%\Installer\2d58d.ipi
  • %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.be\vcredist_x86.exe
  • %WINDIR%\Installer\2d588.ipi
  • %WINDIR%\Installer\MSI9.tmp
  • C:\Config.Msi\2d58e.rbs
Moves the following files:
  • from %ALLUSERSPROFILE%\Application Data\Package Cache\.unverified\vcRuntimeAdditional_x86 to %ALLUSERSPROFILE%\Application Data\Package Cache\{F8CFEB22-A2E7-3971-9EDA-4B11EDEFC185}v12.0.21005\packages\vcRuntimeAdditional_x86\vc_runtimeAdditional_x86.msi
  • from %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\vcRuntimeAdditional_x86 to %ALLUSERSPROFILE%\Application Data\Package Cache\.unverified\vcRuntimeAdditional_x86
  • from %ALLUSERSPROFILE%\Application Data\Package Cache\.unverified\cabB3E1576D1FEFBB979E13B1A5379E0B16 to %ALLUSERSPROFILE%\Application Data\Package Cache\{F8CFEB22-A2E7-3971-9EDA-4B11EDEFC185}v12.0.21005\packages\vcRuntimeAdditional_x86\cab1.cab
  • from %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\cabB3E1576D1FEFBB979E13B1A5379E0B16 to %ALLUSERSPROFILE%\Application Data\Package Cache\.unverified\cabB3E1576D1FEFBB979E13B1A5379E0B16
  • from %ALLUSERSPROFILE%\Application Data\Package Cache\.unverified\vcRuntimeMinimum_x86 to %ALLUSERSPROFILE%\Application Data\Package Cache\{13A4EE12-23EA-3371-91EE-EFB36DDFFF3E}v12.0.21005\packages\vcRuntimeMinimum_x86\vc_runtimeMinimum_x86.msi
  • from %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\vcRuntimeMinimum_x86 to %ALLUSERSPROFILE%\Application Data\Package Cache\.unverified\vcRuntimeMinimum_x86
  • from %ALLUSERSPROFILE%\Application Data\Package Cache\.unverified\cab54A5CABBE7274D8A22EB58060AAB7623 to %ALLUSERSPROFILE%\Application Data\Package Cache\{13A4EE12-23EA-3371-91EE-EFB36DDFFF3E}v12.0.21005\packages\vcRuntimeMinimum_x86\cab1.cab
  • from %TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\cab54A5CABBE7274D8A22EB58060AAB7623 to %ALLUSERSPROFILE%\Application Data\Package Cache\.unverified\cab54A5CABBE7274D8A22EB58060AAB7623
Network activity:
Connects to:
  • '20#.#6.232.182':80
  • 'wp#d':80
TCP:
HTTP GET requests:
  • http://crl.microsoft.com/pki/crl/products/MicCodSigPCA_08-31-2010.crl via 20#.#6.232.182
  • http://crl.microsoft.com/pki/crl/products/MicrosoftTimeStampPCA.crl via 20#.#6.232.182
  • http://11#.#11.111.1/wpad.dat via wp#d
  • http://crl.microsoft.com/pki/crl/products/microsoftrootcert.crl via 20#.#6.232.182
UDP:
  • DNS ASK crl.microsoft.com
  • DNS ASK wp#d
Miscellaneous:
Searches for the following windows:
  • ClassName: '#32770' WindowName: ''
Creates and executes the following:
  • '%ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\pcvisit_client.exe' -I CommandLineInstallAndStart.txt --saveCompanyForSupportRequestsOnly "F9583308998" --registerAtCompanyAndApplyItsPolicies "F9583308998"
  • '%ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\pcvisit_client.exe' --StartMode AsService
  • '%TEMP%\{e6e75766-da0f-4ba2-9788-6ea593ce702d}\.be\vcredist_x86.exe' -q -burn.elevated BurnPipe.{B4AD4E50-E885-4B0F-9B41-84E0A18AA416} {6419EACD-C493-492A-AAB8-5F79BC464B7B} 2932
  • '<Current directory>\pcvisit_RemoteHost_15_Setup.exe' /S /SupporterID=F9583308998 /UseCompanyPreset
  • '%ProgramFiles%\pcvisit Software AG\pcvisit RemoteHost 15.0\vcredist_x86.exe' /q /norestart
Executes the following:
  • '<SYSTEM32>\msiexec.exe' /V
  • '<SYSTEM32>\cmd.exe' /c ""%TEMP%\1.tmp\2.bat" <Full path to file>"

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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Download by serial number

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.

Download Dr.Web

Download by serial number

  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