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Perfil

Trojan.DownLoader6.8043

Added to the Dr.Web virus database: 2012-05-15

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,<SYSTEM32>\svch0st.exe'
Malicious functions:
Creates and executes the following:
  • %TEMP%\7ZipSfx.000\WYWZ\Wywz.exe
  • <Current directory>\temp.exe
  • <SYSTEM32>\svch0st.exe
Modifies file system :
Creates the following files:
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\PSPad.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\ProcessGuard.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\RazorLame.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\QuickTime.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\PowerDVD.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Office Password Recovery.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Office Key.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\PE Explorer.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Passolo.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\ssm.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Spybot Search and Destroy.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\temp.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Symantec.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Sandboxie.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\realplayer.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\reader_564.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Safari.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\regsnap.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Microsoft HTML Help.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\MemoriesOnTV.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\mpc.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Microsoft Visual C++.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\McAfee.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Macromedia Flash MX.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Macromedia Firework MX.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\MainConcept MPEG Encoder.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Magic ISO Maker.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Netmeeting.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\nero.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\O&O Defrag.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\NotePad+.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Nero Wave Editor.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\MSN Messenger User Account.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\MSN Messager.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Multimedia Builder.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\MSN Tool Bar.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\ThreatFire.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\z_System_jianfei.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Zoom Player.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\删除skype聊天记录.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\删除skype使用痕迹.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Yahoo! Messenger.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\WisMencoder.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\winrar.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Xplorer2 Pro.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\wmp11.wyz
  • %APPDATA%\Microsoft\Protect\S-1-5-21-2052111302-484763869-725345543-1003\Preferred
  • %APPDATA%\Microsoft\Protect\S-1-5-21-2052111302-484763869-725345543-1003\4516684d-4f67-45b4-8dad-845e29eceb2a
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\ЧФ¶ЁТеОДјюЙѕіэ.wyz
  • %APPDATA%\Microsoft\Crypto\RSA\S-1-5-21-2052111302-484763869-725345543-1003\ec702f375e1b12d218f67ab9ef19ca23_23ef5514-3059-436f-a4a7-4cefaab20eb1
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\系统盘未使用空间.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\拍拍烧.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\金山词霸.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\自定义文件删除.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\UltraEdit.wyz
  • %HOMEPATH%\Local Settings\Tempver.ini
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\usb.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\UltraISO.wyz
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\ver[1].txt
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Totalcmd.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\TMPGEnc Plus.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Ulead VideoStudio.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\TTPlayer.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\WinImage.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Windows memory dumps.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\WinMerge.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\WinISO.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\winavi.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\VideoPack.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\uTorrent 1.x.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Winamp.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\virtual.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Macromedia Dreamweaver MX.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\2003 Prefetch.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Ulead VideoStudio.wyz.bak
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\7-Zip.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\3GP Video.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\nero.wyz.bak
  • %TEMP%\7ZipSfx.000\WYWZ\filed.sys
  • %TEMP%\7ZipSfx.000\WYWZ\wywz.dll
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Nero Wave Editor.wyz.bak
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\McAfee.wyz.bak
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\AnVir Task Manager.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\AntiVir.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Audition.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\AppCompatCache.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Alcohol 120%.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Acrobat Reader.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\ACDSee.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Agnitum Outpost Pro.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Adobe Acrobat.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\native.bin
  • %TEMP%\7ZipSfx.000\WYWZ\xvdesk2.ico
  • %TEMP%\7ZipSfx.000\WYWZ\使用说明.rtf
  • %TEMP%\7ZipSfx.000\WYWZ\config.ini
  • %TEMP%\7ZipSfx.000\WYWZ\xvdesk1.ico
  • <SYSTEM32>\svch0st.exe
  • %TEMP%\aut1.tmp
  • <Current directory>\temp.exe
  • %TEMP%\aut2.tmp
  • %TEMP%\7ZipSfx.000\WYWZ\Eraser.dll
  • %TEMP%\7ZipSfx.000\WYWZ\ZAWizard.exe
  • %TEMP%\7ZipSfx.000\WYWZ\filed.dll
  • %TEMP%\7ZipSfx.000\WYWZ\Erasext.dll
  • %TEMP%\7ZipSfx.000\WYWZ\XVDesk.exe
  • %TEMP%\7ZipSfx.000\WYWZ\PluginMaker.exe
  • %TEMP%\7ZipSfx.000\WYWZ\HashJet.exe
  • %TEMP%\7ZipSfx.000\WYWZ\Wywz.exe
  • %TEMP%\7ZipSfx.000\WYWZ\subinacl.exe
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\AutoPlay.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\graphedit.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\gpass.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\HyperSnap 6.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\HIPS.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\gp.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Google Pinyin.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\GoldWave.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Google Toolbar.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Google Talk.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\kmp.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Kaspersky Lab.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\LooknStop.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Locate32.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Java Cache Clear.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\IE弹出窗口.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\ico.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\IrfanView 3.x.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\ImgBurn.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\CuteFTP.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\COMODO Firewall Pro.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Dr Watson.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\DivX Player.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\bsplayer.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Avlgomgr.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Avast4.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\bga.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Beyond Compare.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\FLVPlayer4Free.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\FlashFXP.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Ghost Explorer.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Foxit Reader.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Flash Player.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\EmEditor.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\dr.web.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Firefox.wyz
  • %TEMP%\7ZipSfx.000\WYWZ\Plugins\Emule.wyz
Sets the 'hidden' attribute to the following files:
  • <Current directory>\temp.exe
Deletes the following files:
  • %TEMP%\aut2.tmp
  • %TEMP%\aut1.tmp
Network activity:
Connects to:
  • 'gd.##annao.com':8080
  • 'localhost':1038
  • 'up###a.co.tv':80
TCP:
HTTP GET requests:
  • up###a.co.tv/ver.txt
UDP:
  • DNS ASK gd.##annao.com
  • DNS ASK up###a.co.tv
  • DNS ASK www.ba##u.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'MS_WebcheckMonitor' WindowName: ''
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: '' WindowName: ''
  • ClassName: 'MS_AutodialMonitor' WindowName: ''

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