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Trojan.DownLoader22.41987

Added to the Dr.Web virus database: 2016-09-14

Virus description added:

Technical Information

To ensure autorun and distribution
Creates the following services
  • [<HKLM>\System\CurrentControlSet\Services\m9UkhW8poF] 'ImagePath' = '%WINDIR%\syswow64\SEj34aaDQI.sys'
Malicious functions
Injects code into
the following system processes:
  • <SYSTEM32>\svchost.exe
Terminates or attempts to terminate
the following user processes:
  • iexplore.exe
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system
Creates the following files
  • %WINDIR%\sxethc.dll
  • %WINDIR%\bylktb\orjyonbt.dll
  • %ProgramFiles(x86)%\iuyyxbowh\ervices.exe
  • nul
  • %ProgramFiles%\oxl4xpv4c\dcgq9um4.bat
  • %PROGRAMDATA%\odubtnyn\ekdirvpab.exe
  • %WINDIR%\bylktb\qwtuwbru.ico
  • %PROGRAMDATA%\odubtnyn\ipovxwtcu.exe
  • %WINDIR%\bylktb\revntrb.ico
  • %PROGRAMDATA%\odubtnyn\trsqvbfgu.exe
  • %TEMP%\aehknrux.dll
  • %WINDIR%\bylktb\tkisabx.ico
  • %WINDIR%\bylktb\bbqyrlgp.exe
  • %WINDIR%\temp\udd13c8.tmp
  • %WINDIR%\syswow64\sej34aadqi.sys
  • %WINDIR%\bylktb\mjgufpllw.dll
  • %WINDIR%\bylktb\thoyxkq.tmp
  • %WINDIR%\bylktb\quhvvnr.dll
  • %WINDIR%\spkkmuw.dll
  • %WINDIR%\clog.txt
  • %PROGRAMDATA%\fsxfyv\ixxtdaeh.exe
  • %PROGRAMDATA%\bbjuwii.tmp
  • %TEMP%\rcxf31c.tmp
Deletes the following files
  • %WINDIR%\sxethc.dll
  • %WINDIR%\spkkmuw.dll
  • %WINDIR%\clog.txt
  • %WINDIR%\bylktb\thoyxkq.tmp
  • %WINDIR%\bylktb\mjgufpllw.dll
  • %WINDIR%\temp\udd13c8.tmp
  • %WINDIR%\syswow64\sej34aadqi.sys
  • %WINDIR%\bylktb\bbqyrlgp.exe
  • %PROGRAMDATA%\bbjuwii.tmp
  • %WINDIR%\bylktb\quhvvnr.dll
  • %ProgramFiles(x86)%\iuyyxbowh\ervices.exe
  • %WINDIR%\bylktb\orjyonbt.dll
Moves the following files
  • from %WINDIR%\bylktb\mjgufpllw.dll to %WINDIR%\bylktb\niolvcvq.dll
  • from %TEMP%\rcxf31c.tmp to %TEMP%\aehknrux.dll
Substitutes the following files
  • %WINDIR%\bylktb\mjgufpllw.dll
  • %WINDIR%\bylktb\bbqyrlgp.exe
  • %ProgramFiles(x86)%\iuyyxbowh\ervices.exe
  • %WINDIR%\bylktb\orjyonbt.dll
Network activity
TCP
HTTP GET requests
  • http://www.58##y.com/index/getcfg?id##
  • http://www.go##0.com/d2/CDClient.dll
  • http://mg.#636.com/web/upload/ico/6cd4eaad-1f29-4d99-ae94-86276324ff85.ico
  • http://mg.#636.com/web/upload/ico/5b4f45d1-1ffc-45e3-a0c0-1eadc0f5444e.ico
  • http://mg.#636.com/web/upload/ico/44d89489-4cae-4a3b-adc6-5cb170579b7d.ico
  • http://dl#.#xwan.com/d2/HPID.dat
  • http://dl#.#xwan.com/d2/uvtls5.exe
  • http://dl#.#xwan.com/d2/runjxun.dll
HTTP POST requests
  • http://ao#.#ready.cn/terminal/start-up
UDP
  • DNS ASK 58##y.com
  • DNS ASK mk.##o2016.net
  • DNS ASK ha#.#ebnav.top
  • DNS ASK ie.##kanyx.cc
  • DNS ASK 12#.#6kb.xyz
  • DNS ASK 99##.com
  • DNS ASK yy#.##tbardh.com
  • DNS ASK 23###ini.com
  • DNS ASK in###.2345wb.com
  • DNS ASK ne###rdh.com
  • DNS ASK ha#.#6kb.xyz
  • DNS ASK so.com
  • DNS ASK ha##74.com
  • DNS ASK v2##i.v6.cn
  • DNS ASK ha#.qq.com
  • DNS ASK ha#.#vrarmr.xyz
  • DNS ASK ha#.#rarmrm.xyz
  • DNS ASK xi###huou.xyz
  • DNS ASK ff#.#eihuo.com
  • DNS ASK ha#.#zwqw.xyz
  • DNS ASK ha#.#b123.com
  • DNS ASK ok.#h521.cn
  • DNS ASK yy.##tbardh.com
  • DNS ASK ys.##tbardh.com
  • DNS ASK wa###a.com.cn
  • DNS ASK i.####ang2016.com
  • DNS ASK ha#.#cxrb.xyz
  • DNS ASK cd#.#14wb.net
  • DNS ASK nb.##35wang.cn
  • DNS ASK go##0.com
  • DNS ASK mg.#636.com
  • DNS ASK ha##23.com
  • DNS ASK ba##u.com
  • DNS ASK cn.##o123.com
  • DNS ASK 23##.com
  • DNS ASK 12#.#ogou.com
  • DNS ASK so##u.com
  • DNS ASK ha#.360.cn
  • DNS ASK da###ng.qq.com
  • DNS ASK in###.114wb.net
  • DNS ASK ao#.#ready.cn
  • DNS ASK li####qi.baidu.com
  • DNS ASK we#.#ogou.com
  • DNS ASK du##.com
  • DNS ASK da####g.feihuo.com
  • DNS ASK ic###.#aohang2016.com
  • DNS ASK we#.##ohang2016.com
  • DNS ASK in###.hao2016.net
  • DNS ASK dl#.#xwan.com
  • DNS ASK wb.##o2016.net
  • DNS ASK 12#.##site2016.net
  • DNS ASK ie.###ite2016.net
  • DNS ASK 23###.sogoulp.com
  • DNS ASK 52###hang.com
  • '255.255.255.255':6880
Miscellaneous
Adds a root certificate
Searches for the following windows
  • ClassName: 'STATIC' WindowName: 'CA1DB00E753A710E7A64F2'
  • ClassName: 'STATIC' WindowName: '5057320080AE6400804DD8'
  • ClassName: 'Progman' WindowName: 'Program Manager'
  • ClassName: 'SHELLDLL_DefView' WindowName: ''
  • ClassName: 'SysListView32' WindowName: 'FolderView'
  • ClassName: 'TApplication' WindowName: 'eyoorun'
  • ClassName: 'sdfasdfasfasdf' WindowName: 'sdfasdfasfasdf'
Creates and executes the following
  • '%PROGRAMDATA%\fsxfyv\ixxtdaeh.exe' 1
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c ""%ProgramFiles%\OXl4XPV4C\Dcgq9Um4.bat""
  • '%WINDIR%\syswow64\ping.exe' -n 2 127.1
  • '<SYSTEM32>\rundll32.exe' <SYSTEM32>\FirewallControlPanel.dll,ShowNotificationDialog /configure /ETOnly 0 /OnProfiles 6 /OtherAllowed 0 /OtherBlocked 0 /OtherEdgeAllowed 0 /NewBlocked 4 "%PROGRAMDATA%\fsxfyv\ixxtdaeh.ex...
  • '<SYSTEM32>\rundll32.exe' <SYSTEM32>\FirewallControlPanel.dll,ShowNotificationDialog /configure /ETOnly 0 /OnProfiles 6 /OtherAllowed 0 /OtherBlocked 0 /OtherEdgeAllowed 0 /NewBlocked 4 "%ProgramFiles(x86)%\iuyyxbowh\er...

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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  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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