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Trojan.DownLoader24.61145

Added to the Dr.Web virus database: 2017-05-25

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\VOS\Autorun Angel<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{8A69D345-D564-463c-AFF1-A69D9E530F96}] 'StubPath' = '[#CAMEYO-VAR#]"%Program Files (x86)%\Google\C...
Malicious functions:
Executes the following:
  • '%APPDATA%\VOS\Autorun Angel\PROG\%Program Files (x86)%\Autorun Angel\CA.exe'
Injects code into
the following user processes:
  • CA.exe
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'Description' = 'This zone contains all Web sites you haven't plac...
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'PMDisplayName' = 'Internet [Protected Mode]'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'DisplayName' = 'Internet'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'CurrentLevel' = '00011500'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'LowIcon' = 'inetcpl.cpl#005425'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'Icon' = 'inetcpl.cpl#001313'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] 'Flags' = '00000047'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] 'CurrentLevel' = '00011000'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] 'LowIcon' = 'inetcpl.cpl#005424'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '' = ''
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1400' = '00000000'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1200' = '00000000'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'Flags' = '00000001'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] 'CurrentLevel' = '00012000'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] 'LowIcon' = 'inetcpl.cpl#005426'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] 'Icon' = 'inetcpl.cpl#00004481'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1400' = '00000003'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1200' = '00000003'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] 'Flags' = '00000003'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '' = ''
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1200' = '00000000'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] 'Description' = 'This zone contains Web sites that could potential...
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] 'PMDisplayName' = 'Restricted sites [Protected Mode]'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] 'DisplayName' = 'Restricted sites'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] 'Icon' = 'inetcpl.cpl#00004480'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1200' = '00000000'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] 'Flags' = '00000021'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] 'CurrentLevel' = '00000000'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] 'DisplayName' = 'Local intranet'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '' = ''
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1400' = '00000000'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] 'PMDisplayName' = 'Computer [Protected Mode]'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] 'DisplayName' = 'Computer'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '' = ''
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] 'LowIcon' = 'inetcpl.cpl#005422'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] 'Icon' = 'shell32.dll#0016'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] 'Description' = 'Your computer'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] 'PMDisplayName' = 'Local intranet [Protected Mode]'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '' = ''
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '2500' = '00000003'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '1400' = '00000000'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] 'Description' = 'This zone contains Web sites that you trust not t...
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] 'PMDisplayName' = 'Trusted sites [Protected Mode]'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] 'DisplayName' = 'Trusted sites'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] 'LowIcon' = 'inetcpl.cpl#005423'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] 'Icon' = 'shell32.dll#0018'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] 'Description' = 'This zone contains all Web sites that are on your...
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '1200' = '00000000'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] 'Flags' = '000000DB'
  • [<HKCU>\Software\VOS\Autorun Angel\Registry\%CurrentUser%\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] 'CurrentLevel' = '00010500'
Modifies file system:
Creates the following files:
  • %APPDATA%\VOS\Autorun Angel\PROG\%Program Files (x86)%\Autorun Angel\mengine.dll
  • %APPDATA%\VOS\Autorun Angel\PROG\%Common Programs%\Google Chrome.lnk
  • %APPDATA%\VOS\Autorun Angel\PROG\C_\Installed modules\Autorun Angel.lnk
  • %APPDATA%\VOS\Autorun Angel\PROG\%Program Files (x86)%\Autorun Angel\CA.exe.manifest
  • %APPDATA%\VOS\Autorun Angel\CHANGES\VirtFiles.db.2824.tmp
  • %APPDATA%\VOS\Autorun Angel\CHANGES\VirtReg.Base.dat
  • %APPDATA%\VOS\Autorun Angel\PROG\%Common Programs%\Autorun Angel\Uninstall Autorun Angel.lnk
  • %APPDATA%\VOS\Autorun Angel\PROG\%Common Programs%\Autorun Angel\Autorun Angel.lnk
  • %APPDATA%\VOS\Autorun Angel\PROG\C_\Installed modules\Uninstall Autorun Angel.lnk
  • %APPDATA%\VOS\Autorun Angel\CHANGES\CryptCheck.dat
  • %APPDATA%\VOS\Autorun Angel\EngineStamps\ZipCache.20170524-212410.864.stamp
  • %APPDATA%\VOS\Autorun Angel\CHANGES\VirtFiles.db.2848.tmp
  • %APPDATA%\VOS\Autorun Angel\PROG\%Program Files (x86)%\Autorun Angel\CA.exe
  • %APPDATA%\VOS\Autorun Angel\PROG\Icons\unins000.exe.ico
  • %APPDATA%\VOS\Autorun Angel\PROG\Icons\CA.exe.ico
  • %APPDATA%\VOS\Autorun Angel\ZipCache
  • %APPDATA%\VOS\Autorun Angel\EngineStamps\DiskModeDeploy.marker
  • %APPDATA%\VOS\Autorun Angel\CHANGES\VirtReg.dat
  • %APPDATA%\VOS\Autorun Angel\EngineStamps\AppVirtDll64_Autorun Angel.dll.20170524-212410.864.stamp
  • %APPDATA%\VOS\Autorun Angel\AppVirtDll64_Autorun Angel.dll
  • %APPDATA%\VOS\Autorun Angel\EngineStamps\Autorun Angel.exe.20170524-212410.864.stamp
  • %APPDATA%\VOS\Autorun Angel\Autorun Angel.exe
  • %APPDATA%\VOS\Autorun Angel\VirtApp.ini
  • %TEMP%\~DF5AB0.tmp
  • %APPDATA%\VOS\Autorun Angel\EngineStamps\AppVirtDll_Autorun Angel.dll.20170524-212410.864.stamp
  • %APPDATA%\VOS\Autorun Angel\AppVirtDll_Autorun Angel.dll
  • %APPDATA%\VOS\Autorun Angel\Autorun Angel64.exe
  • %APPDATA%\VOS\Autorun Angel\VirtReg.Prog.dat
  • %APPDATA%\VOS\Autorun Angel\EngineStamps\SandboxCfg.db.20170524-212410.864.stamp
  • %APPDATA%\VOS\Autorun Angel\CHANGES\VirtFiles.db
  • %APPDATA%\VOS\Autorun Angel\EngineStamps\VirtReg.Prog.dat.20170524-212410.864.stamp
  • %APPDATA%\VOS\Autorun Angel\VirtFiles.Prog.db
  • %APPDATA%\VOS\Autorun Angel\EngineStamps\Autorun Angel64.exe.20170524-212410.864.stamp
  • %APPDATA%\VOS\Autorun Angel\SandboxCfg.db
  • %APPDATA%\VOS\Autorun Angel\EngineStamps\VirtFiles.Prog.db.20170524-212410.864.stamp
Deletes the following files:
  • %TEMP%\~DF5AB0.tmp
  • %APPDATA%\VOS\Autorun Angel\CHANGES\VirtFiles.db
Network activity:
Connects to:
  • 'on####.cameyo.com':443
UDP:
  • DNS ASK on####.cameyo.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: '' WindowName: 'GFXSVR'

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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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.

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