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Trojan.MulDrop.39664

Added to the Dr.Web virus database: 2012-12-23

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\top.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\zhinanzhenbrowser.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\hsreg.exe] 'Debugger' = '<SYSTEM32>\ruixing.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avant.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\See9IE.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\XWebStar.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\SaaYaa.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\TouchNet.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MyIE.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Iparmor.exe] 'Debugger' = '<SYSTEM32>\ruixing.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360safebox.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RSTray.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Runonce] 'kaa' = '%CommonProgramFiles%\Microsoft Shared\mocrosoft.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kastray.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ast.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360tray.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\srgui.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\winpatrol.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\sriecli.exe] 'Debugger' = '<SYSTEM32>\ctfmon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\tango.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\chrome.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Maxthon.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\KylinBrowser.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\TTraveler.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\opera.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Classes\HTTP\shell\open\command] '' = '"%PROGRAM_FILES%\Internet Explorer\IEXPLORE" ""'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Runonce] 'ringsig' = '%ALLUSERSPROFILE%\Application Data\shared.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\firefox.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\theworld.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\vu.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\IERepair.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\iemate.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\GreenBrowser.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\SogouExplorer.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360SE.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\suda.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MiniIE.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360Start.exe] 'Debugger' = 'C:\iexplor.bat'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AdoIE.exe] 'Debugger' = 'C:\iexplor.bat'
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
  • file extensions
Creates and executes the following:
  • C:\svchd.exe
  • C:\smdssddsd.exe
  • %TEMP%\a.exe
  • %TEMP%\uinstall.exe
  • %TEMP%\shared.exe
Executes the following:
  • <SYSTEM32>\attrib.exe +H +A +S +R "%CommonProgramFiles%\Microsoft Shared\mocrosoft.exe"
  • %WINDIR%\regedit.exe /s key.reg
  • <SYSTEM32>\attrib.exe +H +A +S +R <SYSTEM32>\shared.exe
  • <SYSTEM32>\attrib.exe +H +A +S +R "%ALLUSERSPROFILE%\Application Data\shared.exe"
  • <SYSTEM32>\attrib.exe +H +R +S +A c:\iexplor.bat
  • <SYSTEM32>\ping.exe 127.0.0.1 /n 1800
  • <SYSTEM32>\ping.exe 127.0.0.1 /n 3600
  • <SYSTEM32>\msiexec.exe /regserver
  • %WINDIR%\regedit.exe /s ffsa.reg
  • <SYSTEM32>\taskkill.exe /f /im kastray.exe
  • <SYSTEM32>\taskkill.exe /f /im rfwmain.exe
  • <SYSTEM32>\taskkill.exe /f /im 360tray.exe
  • <SYSTEM32>\taskkill.exe /f /im rstray.exe
  • <SYSTEM32>\taskkill.exe /f /im Iparmor.exe
  • <SYSTEM32>\taskkill.exe /f /im Trojanwall.exe
  • <SYSTEM32>\xcopy.exe shared.exe <SYSTEM32>\ /y
  • <SYSTEM32>\taskkill.exe /f /im ast.exe
  • <SYSTEM32>\taskkill.exe /f /im PFW.exe
Terminates or attempts to terminate
the following user processes:
  • 360tray.exe
Modifies settings of Windows Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoInternetIcon' = '00000001'
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
  • C:\html\peer_down.html
  • C:\html\peer_down71.html
  • C:\html\peer_down72.html
  • C:\html\home84.html
  • C:\html\home85.html
  • C:\html\peer_do.html
  • %HOMEPATH%\Start Menu\Programs\Internet Explore.lnk\Internet Explore.lnk
  • C:\html\peer_down75.html
  • C:\html\peer_down76.html
  • %HOMEPATH%\Start Menu\Internet Explore.lnk
  • C:\html\peer_down73.html
  • C:\html\peer_down74.html
  • C:\html\home83.html
  • C:\html\home76.html
  • C:\key.reg
  • C:\html\home77.html
  • C:\html\home75.html
  • C:\iexplor.bat
  • C:\Internet Explore.lnk
  • C:\html\home80.html
  • C:\html\home81.html
  • C:\html\home82.html
  • C:\svchd.exe
  • C:\html\home78.html
  • C:\html\home79.html
  • C:\html\peer_down77.html
  • C:\html\peer_se84.html
  • C:\html\peer_se85.html
  • C:\Program\adtask.xml
  • C:\html\peer_se81.html
  • C:\html\peer_se82.html
  • C:\html\peer_se83.html
  • C:\smdssddsd.exe
  • %APPDATA%\Microsoft\Internet Explorer\Quick Launch\╞Ї╢п Internet Explorer фп└└╞ў.lnk
  • %TEMP%\bt30130.bat
  • C:\Program\gui.cfg
  • <SYSTEM32>\skipxbar.dll
  • C:\ffsa.reg
  • C:\html\peer_se80.html
  • C:\html\peer_recomm.html
  • C:\html\peer_se73.html
  • C:\html\peer_se74.html
  • C:\html\peer_down78.html
  • C:\html\peer_down79.html
  • C:\html\peer_down80.html
  • C:\html\peer_se77.html
  • C:\html\peer_se78.html
  • C:\html\peer_se79.html
  • C:\html\peer_se75.html
  • C:\html\peer_se76.html
  • %TEMP%\bt07313.bat
  • %CommonProgramFiles%\Microsoft Shared\mocrosoft.exe
  • C:\config\config.ini
  • %ALLUSERSPROFILE%\Application Data\i\topbg01.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg02.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_3.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_4.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_5.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg05.gif
  • C:\config\pfplayertemp.ini
  • %ALLUSERSPROFILE%\Application Data\i\zj_2.gif
  • C:\config\enumwindow.ini
  • %ALLUSERSPROFILE%\Application Data\i\topbg03.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg04.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_2.gif
  • %TEMP%\key.reg
  • %TEMP%\bt81303.bat
  • %ALLUSERSPROFILE%\Application Data\daohang.htm
  • %TEMP%\shared.exe
  • %TEMP%\a.exe
  • %TEMP%\uinstall.exe
  • %ALLUSERSPROFILE%\Application Data\i\gl_4.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_5.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_1.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_1.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_2.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_3.gif
  • C:\Downloads\(写真集) - 美處女欲情.rar
  • C:\Downloads\琼 瑞妮丝&露丝 华思理-金赛性学报(电子书).rar
  • C:\Downloads\电脑四大核心硬件知识详解chm电子书(1)(4).rar
  • C:\Downloads\电脑故障维修大全(电子书).rar
  • %ALLUSERSPROFILE%\Application Data\images\sd_1.css
  • C:\Downloads\狐孽 - 全文阅读 - 鱼水情言情小说原创文学书库 - 小说_玄幻_武侠_言情_都市_科幻.rar
  • %ALLUSERSPROFILE%\Application Data\images\srh_1.gif
  • C:\html\home.html
  • C:\Users\All Users\Desktop\Internet Explore.lnk
  • C:\html\home74.html
  • %ALLUSERSPROFILE%\桌面\Internet Explore.lnk
  • C:\Downloads\采花录(花间曲) 全集完整版txt电子书(1).rar
  • %ALLUSERSPROFILE%\Application Data\shared.exe
  • C:\Downloads\报刊英语单词精华(电子书).rar
  • C:\Downloads\6小说-笑话 黄谜(1).rar
  • %ALLUSERSPROFILE%\Application Data\images\funb.js
  • C:\Downloads\txt电子书_言情小说_[纳妾记]全集电子书txt.rar
  • <SYSTEM32>\shared.exe
  • C:\Downloads\100部经典电子书_全球通史(1).rar
  • C:\Downloads\100部经典电子书_法律法规(1).rar
  • C:\Downloads\[电子书][書籍][圖書][武术][气功]睡功心法.rar
  • C:\Downloads\[电子书][書籍][圖書]犹太 人 为什么 优秀.rar
  • %ALLUSERSPROFILE%\Application Data\images\logo.jpg
  • C:\Downloads\txt电子书，全是经典 (1)(3)(1)(3)(2).rar
  • %ALLUSERSPROFILE%\Application Data\images\gl_1.gif
  • C:\Downloads\[唐诗鉴赏大辞典](上中下)[exe][电子书](1)(4)(1).rar
Sets the 'hidden' attribute to the following files:
  • %ALLUSERSPROFILE%\Application Data\images\logo.jpg
  • %ALLUSERSPROFILE%\Application Data\images\gl_1.gif
  • %ALLUSERSPROFILE%\Application Data\images\srh_1.gif
  • %ALLUSERSPROFILE%\Application Data\images\sd_1.css
  • %ALLUSERSPROFILE%\Application Data\i\topbg05.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg04.gif
  • %ALLUSERSPROFILE%\Application Data\images\funb.js
  • %ALLUSERSPROFILE%\Application Data\i\zj_2.gif
  • %TEMP%\bt07313.bat
  • %CommonProgramFiles%\Microsoft Shared\mocrosoft.exe
  • %TEMP%\bt30130.bat
  • C:\smdssddsd.exe
  • C:\svchd.exe
  • C:\iexplor.bat
  • %ALLUSERSPROFILE%\Application Data\shared.exe
  • <SYSTEM32>\shared.exe
  • %ALLUSERSPROFILE%\Application Data\i\gl_3.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_2.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_5.gif
  • %ALLUSERSPROFILE%\Application Data\i\gl_4.gif
  • %TEMP%\bt81303.bat
  • %TEMP%\uinstall.exe
  • %ALLUSERSPROFILE%\Application Data\i\gl_1.gif
  • %ALLUSERSPROFILE%\Application Data\daohang.htm
  • %ALLUSERSPROFILE%\Application Data\i\topbg01.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_5.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg03.gif
  • %ALLUSERSPROFILE%\Application Data\i\topbg02.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_2.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_1.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_4.gif
  • %ALLUSERSPROFILE%\Application Data\i\srh_3.gif
Deletes the following files:
  • C:\html\peer_down79.html
  • C:\html\peer_down80.html
  • C:\html\peer_down77.html
  • C:\html\peer_down78.html
  • C:\html\peer_se74.html
  • C:\html\peer_se75.html
  • C:\html\peer_recomm.html
  • C:\html\peer_se73.html
  • C:\html\peer_down71.html
  • C:\html\peer_down72.html
  • C:\html\peer_do.html
  • C:\html\peer_down.html
  • C:\html\peer_down75.html
  • C:\html\peer_down76.html
  • C:\html\peer_down73.html
  • C:\html\peer_down74.html
  • C:\config\config.ini
  • C:\config\enumwindow.ini
  • C:\html\peer_se84.html
  • C:\html\peer_se85.html
  • C:\Program\gui.cfg
  • C:\ffsa.reg
  • C:\config\pfplayertemp.ini
  • C:\Program\adtask.xml
  • C:\html\peer_se78.html
  • C:\html\peer_se79.html
  • C:\html\peer_se76.html
  • C:\html\peer_se77.html
  • C:\html\peer_se82.html
  • C:\html\peer_se83.html
  • C:\html\peer_se80.html
  • C:\html\peer_se81.html
  • C:\html\home85.html
  • C:\Downloads\txt电子书，全是经典 (1)(3)(1)(3)(2).rar
  • C:\Downloads\[唐诗鉴赏大辞典](上中下)[exe][电子书](1)(4)(1).rar
  • C:\Downloads\6小说-笑话 黄谜(1).rar
  • C:\Downloads\txt电子书_言情小说_[纳妾记]全集电子书txt.rar
  • C:\Downloads\报刊英语单词精华(电子书).rar
  • C:\Downloads\狐孽 - 全文阅读 - 鱼水情言情小说原创文学书库 - 小说_玄幻_武侠_言情_都市_科幻.rar
  • C:\Downloads\[电子书][書籍][圖書][武术][气功]睡功心法.rar
  • C:\Downloads\[电子书][書籍][圖書]犹太 人 为什么 优秀.rar
  • %TEMP%\bt81303.bat
  • C:\key.reg
  • %TEMP%\shared.exe
  • %TEMP%\key.reg
  • C:\Downloads\100部经典电子书_全球通史(1).rar
  • C:\Downloads\100部经典电子书_法律法规(1).rar
  • <DRIVERS>\etc\hosts
  • C:\Downloads\(写真集) - 美處女欲情.rar
  • C:\html\home79.html
  • C:\html\home80.html
  • C:\html\home77.html
  • C:\html\home78.html
  • C:\html\home83.html
  • C:\html\home84.html
  • C:\html\home81.html
  • C:\html\home82.html
  • C:\Downloads\电脑故障维修大全(电子书).rar
  • C:\Downloads\采花录(花间曲) 全集完整版txt电子书(1).rar
  • C:\Downloads\琼 瑞妮丝&露丝 华思理-金赛性学报(电子书).rar
  • C:\Downloads\电脑四大核心硬件知识详解chm电子书(1)(4).rar
  • C:\html\home75.html
  • C:\html\home76.html
  • C:\html\home.html
  • C:\html\home74.html
Miscellaneous:
Searches for the following windows:
  • ClassName: '' WindowName: ''
  • ClassName: 'RegEdit_RegEdit' WindowName: ''
  • ClassName: 'EDIT' WindowName: ''
  • ClassName: 'Shell_TrayWnd' WindowName: ''

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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);
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