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Dr.Web vxCube

打开分析仪

计算机病毒事件调查

病毒知识库

技术

术语

教育培训

误区

有关反病毒软件的误区

Trojan.DownLoader8.56540

Added to the Dr.Web virus database: 2013-05-01

Virus description added: 2013-05-05

Technical Information

To ensure autorun and distribution:

Creates or modifies the following files:

%ALLUSERSPROFILE%\Start Menu\Programs\Startup\.lnk

Creates the following services:

[<HKLM>\SYSTEM\ControlSet001\Services\6WXRQR2C2BM] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\K89ULE8A2] 'Start' = '00000002'

Malicious functions:

Creates and executes the following:

'%PROGRAM_FILES%\6AYXXF.exe' CHAS8IRAMCJ
'%PROGRAM_FILES%\6AYXXF.exe' <Full path to virus>

Executes the following:

'<SYSTEM32>\reg.exe' ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v Play_Animations /t REG_SZ /d no /F
'<SYSTEM32>\reg.exe' ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Display Inline Videos" /t REG_SZ /d no /F
'<SYSTEM32>\regsvr32.exe' /s jscript.dll
'<SYSTEM32>\reg.exe' ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v Play_Background_Sounds /t REG_SZ /d no /F
'<SYSTEM32>\reg.exe' ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Disable Script Debugger" /t REG_SZ /d yes /F
'<SYSTEM32>\reg.exe' delete HKLM\Software\Microsoft\Windows\CurrentVersion\Run /F
'<SYSTEM32>\reg.exe' ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Display Inline Images" /t REG_SZ /d yes /F
'<SYSTEM32>\reg.exe' ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v DisableScriptDebuggerIE /t REG_SZ /d yes /F
'<SYSTEM32>\regsvr32.exe' /u /s shimgvw.dll
'<SYSTEM32>\cmd.exe' /c "%PROGRAM_FILES%\U1V4E6R3U.bat"
'<SYSTEM32>\cmd.exe' /c "%PROGRAM_FILES%\1R6FGZ1.bat"
'<SYSTEM32>\sc.exe' create K7GRUVUBinPath= "%PROGRAM_FILES%\4T3EL01X2A\08NAUX6SR6.exe -start" type= own type= interact start= auto DisplayName= 7VW5PZLQ2
'<SYSTEM32>\regsvr32.exe' /u /s scrrun.dll
'<SYSTEM32>\regsvr32.exe' /u /s vbscript.dll
'<SYSTEM32>\sc.exe' create 7VW5PZLQ2BinPath= "%PROGRAM_FILES%\5IN9J49QM4BJ\TCCYQFN3XD9H.exe -start" type= own type= interact start= auto DisplayName= 07JMN5DL5Y
'<SYSTEM32>\regsvr32.exe' /u /s itss.dll

Modifies file system :

Creates the following files:

%TEMP%\RGI1.tmp
%PROGRAM_FILES%\U1V4E6R3U.bat
%TEMP%\RGI2.tmp
%WINDIR%\QHKSC.exe
%PROGRAM_FILES%\5IN9J49QM4BJ\TCCYQFN3XD9H.exe
%PROGRAM_FILES%\1R6FGZ1.bat
%PROGRAM_FILES%\4T3EL01X2A\08NAUX6SR6.exe
%PROGRAM_FILES%\6AYXXF.exe
%WINDIR%\W0S3NMJUGSJ.exe

Sets the 'hidden' attribute to the following files:

%ALLUSERSPROFILE%\Start Menu\Programs\Startup\.lnk

Deletes the following files:

%WINDIR%\Media\Windows XP Logoff Sound.wav
%WINDIR%\Media\Windows XP Information Bar.wav
%WINDIR%\Media\Windows XP Logon Sound.wav
%WINDIR%\Media\Windows XP Minimize.wav
%WINDIR%\Media\Windows XP Menu Command.wav
%WINDIR%\Media\Windows XP Exclamation.wav
%WINDIR%\Media\Windows XP Error.wav
%WINDIR%\Media\Windows XP Hardware Fail.wav
%WINDIR%\Media\Windows XP Hardware Remove.wav
%WINDIR%\Media\Windows XP Hardware Insert.wav
%WINDIR%\Media\Windows XP Ringout.wav
%WINDIR%\Media\Windows XP Ringin.wav
%WINDIR%\Media\Windows XP Shutdown.wav
%WINDIR%\Media\Windows XP Startup.wav
%WINDIR%\Media\Windows XP Start.wav
%WINDIR%\Media\Windows XP Pop-up Blocked.wav
%WINDIR%\Media\Windows XP Notify.wav
%WINDIR%\Media\Windows XP Print complete.wav
%WINDIR%\Media\Windows XP Restore.wav
%WINDIR%\Media\Windows XP Recycle.wav
%WINDIR%\Media\notify.wav
%WINDIR%\Media\flourish.mid
%WINDIR%\Media\onestop.mid
%WINDIR%\Media\ringin.wav
%WINDIR%\Media\recycle.wav
%TEMP%\RGI2.tmp
%TEMP%\RGI1.tmp
%WINDIR%\Media\chimes.wav
%WINDIR%\Media\ding.wav
%WINDIR%\Media\chord.wav
%WINDIR%\Media\Windows XP Battery Low.wav
%WINDIR%\Media\Windows XP Battery Critical.wav
%WINDIR%\Media\Windows XP Critical Stop.wav
%WINDIR%\Media\Windows XP Ding.wav
%WINDIR%\Media\Windows XP Default.wav
%WINDIR%\Media\start.wav
%WINDIR%\Media\ringout.wav
%WINDIR%\Media\tada.wav
%WINDIR%\Media\Windows XP Balloon.wav
%WINDIR%\Media\town.mid

Network activity:

Connects to:

'58.#9.58.27':443

Miscellaneous:

Searches for the following windows:

ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: 'VPFFJNZYZLORUU' WindowName: 'gcdnupkajkeuve'

Curing recommendations

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.
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.

Download Dr.Web

Download by serial number

Download on App Store

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

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.
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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