Trojan-Downloader.Win32.Agent.ue

病毒名称： Trojan-Downloader.Win32.Agent.ue

中文名称：落雪变种

病毒类型：木马

文件 MD5： D66859A23DA410C0CA9E8DAF387565B9

公开范围：完全公开

危害等级： 5

文件长度： 19,968 字节

感染系统： windows98以上版本

开发工具： Microsoft Visual C++ 6.0 DLL

加壳类型： tElock 0.99 - 1.0 private

命名对照：驱逐舰[Trojan.Downloader.8019]

BitDefender [Trojan.Downloader.Agent.UE]

病毒描述：

该病毒属木马类，病毒运行后衍生病毒文件，修改注册表，添加启动项，以达到随机启动的目的，连接网络，下载大量病毒文件，并自动运行，修改.exe文件的关联文件，使可exe文件无法正常运行。

行为分析：

1、病毒运行后衍生病毒文件，连接网络下量病毒文件，并自动运行：

%Program Files%Common Filesiexplore.pif

%Program Files%Internet Exploreriexplore.com

%WINDOWS%1.com

%WINDOWS%608769.dll

%WINDOWS%608769m.bmp

%WINDOWS%exeroute.exe

%WINDOWS%explorer.com

%WINDOWS%finder.com

%WINDOWS%kb608769m.log

%WINDOWS%winlogon.exe

%system32%command.pif

%system32%dlmain.dll

%system32%dlmon.dll

%system32%dxdiag.com

%system32%finder.com

%system32%msconfig.com

%system32%

egedit.com

%system32%

undll32.com

2、添加启动项，以达到随机启动的目的：

HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun

键值: 字串: "Trojan Program "="C:WINDOWSWINLOGON.EXE"

HKEY_LOCAL_MACHINESOFTWAREClasses.exe@

新建键值: 字串: "winfiles"

原键值: 字串: "exefile"

HKEY_LOCAL_MACHINESOFTWAREClasses.bfcShellNewCommand

新建键值: 字串: "%SystemRoot%system32

undll32.com %SystemRoot%system32 syncui.dll,Briefcase_Create %2!d! %1"

原键值: 字串: "%SystemRoot%system32

undll32.exe %SystemRoot%system32 syncui.dll,Briefcase_Create %2!d! %1"

HKEY_LOCAL_MACHINESOFTWAREClasses.lnkShellNewCommand

新建键值: 字串: "rundll32.com appwiz.cpl,NewLinkHere %1"

原键值: 字串: "rundll32.exe appwiz.cpl,NewLinkHere %1"

HKEY_LOCAL_MACHINESOFTWAREClassesApplications

iexplore.exeshellopencommand@

新建键值: 字串: ""C:Program FilesInternet Exploreriexplore.com" %1"

原键值: 字串: ""C:Program FilesInternet Exploreriexplore.exe" %1"

HKEY_LOCAL_MACHINESOFTWAREClassesCLSID{871C5380-42A0-1069-A2EA-08002B30309D}shellOpenHomePageCommand@

新建键值: 字串: ""C:Program FilesInternet Exploreriexplore.com""

原键值: 字串: ""C:Program FilesInternet Exploreriexplore.exe""

HKEY_LOCAL_MACHINESOFTWAREClassescplfileshellcplopencommand@

新建键值: 字串: "rundll32.com shell32.dll,Control_RunDLL "%1",%*"

原键值: 字串: "rundll32.exe shell32.dll,Control_RunDLL "%1",%*"

HKEY_LOCAL_MACHINESOFTWAREClassesDriveshellfindcommand@

新建键值: 字串: "%SystemRoot%explorer.com"

原键值: 字串: "%SystemRoot%explorer.exe"

HKEY_LOCAL_MACHINESOFTWAREClassesdunfileshellopencommand@

新建键值: 字串: "%SystemRoot%system32

undll32.com NETSHELL.DLL, InvokeDunFile %1"

原键值: 字串: "%SystemRoot%system32

undll32.exe NETSHELL.DLL, InvokeDunFile %1"

HKEY_LOCAL_MACHINESOFTWAREClassesftpshellopencommand@

新建键值: 字串: ""C:Program FilesInternet Exploreriexplore.com" %1"

原键值: 字串: ""C:Program FilesInternet Exploreriexplore.exe" %1"

HKEY_LOCAL_MACHINESOFTWAREClasseshtmlfileshellopencommand@

新建键值: 字串: ""C:Program FilesInternet Exploreriexplore.com" -nohome"

原键值: 字串: ""C:Program FilesInternet Exploreriexplore.exe" -nohome"

HKEY_LOCAL_MACHINESOFTWAREClasseshtmlfileshellopennewcommand@

新建键值: 字串: ""C:Program Filescommon~1iexplore.pif" %1"

原键值: 字串: ""C:Program FilesInternet Exploreriexplore.exe" %1"

HKEY_LOCAL_MACHINESOFTWAREClasseshtmlfileshellprintcommand@

新建键值: 字串: "rundll32.com %SystemRoot%system32mshtml.dll,PrintHTML "%1""

原键值: 字串: "rundll32.exe %SystemRoot%system32mshtml.dll,PrintHTML "%1""

HKEY_LOCAL_MACHINESOFTWAREClassesHTTPshellopencommand@

新建键值: 字串: ""C:Program Filescommon~1iexplore.pif" -nohome"

原键值: 字串: ""C:Program FilesInternet Exploreriexplore.exe" -nohome"

HKEY_LOCAL_MACHINESOFTWAREClassesinffileshellInstallcommand@

新建键值: 字串: "%SystemRoot%System32

undll32.com setupapi,InstallHinfSection DefaultInstall 132 %1"

原键值: 字串: "%SystemRoot%System32

undll32.exe setupapi,InstallHinfSection

DefaultInstall 132 %1"

HKEY_LOCAL_MACHINESOFTWAREClassesInternetShortcutshellopencommand@

新建键值: 字串: "finder.com shdocvw.dll,OpenURL %l"

原键值: 字串: "rundll32.exe shdocvw.dll,OpenURL %l"

HKEY_LOCAL_MACHINESOFTWAREClassesscrfileshellinstallcommand@

新建键值: 字串: "finder.com desk.cpl,InstallScreenSaver %l"

原键值: 字串: "rundll32.exe desk.cpl,InstallScreenSaver %l"

HKEY_LOCAL_MACHINESOFTWAREClassesscriptletfileShellGenerate Typelibcommand@

新建键值: 字串: ""C:WINDOWSsystem32finder.com"

C:WINDOWSsystem32scrobj.dll,GenerateTypeLib "%1""

原键值: 字串: ""C:WINDOWSsystem32RUNDLL32.EXE" C:WINDOWSsystem32scrobj.dll,GenerateTypeLib "%1""

HKEY_LOCAL_MACHINESOFTWAREClasseselnetshellopencommand@

新建键值: 字串: "finder.com url.dll,TelnetProtocolHandler %l"

原键值: 字串: "rundll32.exe url.dll,TelnetProtocolHandler %l"

HKEY_LOCAL_MACHINESOFTWAREClassesUnknownshellopenascommand@

新建键值: 字串: "%SystemRoot%system32finder.com %SystemRoot%system32shell32.dll,OpenAs_RunDLL %1"

原键值: 字串: "%SystemRoot%system32finder.exe %SystemRoot%system32shell32.dll,OpenAs_RunDLL %1"

HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternet@

新建键值: 字串: "iexplore.pif"

原键值: 字串: "IEXPLORE.EXE"

3、修改.exe文件的关联文件，使可exe文件无法正常运行。

注：% System%是一个可变路径。病毒通过查询操作系统来决定当前System文件夹的位置。Windows2000/NT中默认的安装路径是C:WinntSystem32，windows95/98/me中默认的安装路径是C:WindowsSystem，windowsXP中默认的安装路径是C:WindowsSystem32。

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清除方案：

1、使用安天木马防线可彻底清除此病毒(推荐)。

2、手工清除请按照行为分析删除对应文件，恢复相关系统设置。

(1) 使用安天木马防线“进程管理”关闭病毒进程

(2) 删除病毒文件

%Program Files%Common Filesiexplore.pif

%Program Files%Internet Exploreriexplore.com

%WINDOWS%1.com

%WINDOWS%608769.dll

%WINDOWS%608769m.bmp

%WINDOWS%exeroute.exe

%WINDOWS%explorer.com

%WINDOWS%finder.com

%WINDOWS%kb608769m.log

%WINDOWS%winlogon.exe

%system32%command.pif

%system32%dlmain.dll

%system32%dlmon.dll

%system32%dxdiag.com

%system32%finder.com

%system32%msconfig.com

%system32%

egedit.com

%system32%

undll32.com

(3) 恢复病毒修改的注册表项目，删除病毒添加的注册表项

HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows

CurrentVersionRun"键值: 字串: "Trojan Program

"="C:WINDOWSWINLOGON.EXE"

HKEY_LOCAL_MACHINESOFTWAREClasses.exe@

新建键值: 字串: "winfiles"

原键值: 字串: "exefile"

HKEY_LOCAL_MACHINESOFTWAREClasses.bfcShellNewCommand

新建键值: 字串: "%SystemRoot%system32

undll32.com

%SystemRoot%system32 syncui.dll,Briefcase_Create %2!d! %1"

原键值: 字串: "%SystemRoot%system32

undll32.exe

%SystemRoot%system32 syncui.dll,Briefcase_Create %2!d! %1"

HKEY_LOCAL_MACHINESOFTWAREClasses.lnkShellNewCommand

新建键值: 字串: "rundll32.com appwiz.cpl,NewLinkHere %1"

原键值: 字串: "rundll32.exe appwiz.cpl,NewLinkHere %1"

HKEY_LOCAL_MACHINESOFTWAREClassesApplications

iexplore.exeshellopencommand@

新建键值: 字串: ""C:Program FilesInternet Explorer

iexplore.com" %1"

原键值: 字串: ""C:Program FilesInternet Exploreriexplore.exe" %1"

HKEY_LOCAL_MACHINESOFTWAREClassesCLSID{871C5380-

42A0-1069-A2EA-08002B30309D}shellOpenHomePageCommand@

新建键值: 字串: ""C:Program FilesInternet Explorer

iexplore.com""

原键值: 字串: ""C:Program FilesInternet Exploreriexplore.exe""

HKEY_LOCAL_MACHINESOFTWAREClassescplfileshell

cplopencommand@

新建键值: 字串: "rundll32.com shell32.dll,Control_RunDLL "%1",%*"

原键值: 字串: "rundll32.exe shell32.dll,Control_RunDLL "%1",%*"

HKEY_LOCAL_MACHINESOFTWAREClassesDriveshellfindcommand@

新建键值: 字串: "%SystemRoot%explorer.com"

原键值: 字串: "%SystemRoot%explorer.exe"

HKEY_LOCAL_MACHINESOFTWAREClassesdunfileshellopencommand@

新建键值: 字串: "%SystemRoot%system32

undll32.com NETSHELL.DLL, InvokeDunFile %1"

原键值: 字串: "%SystemRoot%system32

undll32.exe NETSHELL.DLL, InvokeDunFile %1"

HKEY_LOCAL_MACHINESOFTWAREClassesftpshellopencommand@

新建键值: 字串: ""C:Program FilesInternet Explorer

iexplore.com" %1"

原键值: 字串: ""C:Program FilesInternet Explorer

iexplore.exe" %1"

HKEY_LOCAL_MACHINESOFTWAREClasseshtmlfileshell

opencommand@

新建键值: 字串: ""C:Program FilesInternet Explorer

iexplore.com" -nohome"

原键值: 字串: ""C:Program FilesInternet Explorer

iexplore.exe" -nohome"

HKEY_LOCAL_MACHINESOFTWAREClasseshtmlfileshell

opennewcommand@

新建键值: 字串: ""C:Program Filescommon~1iexplore.pif" %1"

原键值: 字串: ""C:Program FilesInternet Explorer

iexplore.exe" %1"

HKEY_LOCAL_MACHINESOFTWAREClasseshtmlfileshellprintcommand@

新建键值: 字串: "rundll32.com %SystemRoot%system32

mshtml.dll,PrintHTML "%1""

原键值: 字串: "rundll32.exe %SystemRoot%system32

mshtml.dll,PrintHTML "%1""

HKEY_LOCAL_MACHINESOFTWAREClassesHTTPshellopen

command@

新建键值: 字串: ""C:Program Filescommon~1iexplore.pif" -nohome"

原键值: 字串: ""C:Program FilesInternet Explorer

iexplore.exe" -nohome"

HKEY_LOCAL_MACHINESOFTWAREClassesinffileshellInstallcommand@

新建键值: 字串: "%SystemRoot%System32

undll32.com setupapi,InstallHinfSection DefaultInstall 132 %1"

原键值: 字串: "%SystemRoot%System32

undll32.exe setupapi,InstallHinfSection DefaultInstall 132 %1"

HKEY_LOCAL_MACHINESOFTWAREClassesInternetShortcut

shellopencommand@

新建键值: 字串: "finder.com shdocvw.dll,OpenURL %l"

原键值: 字串: "rundll32.exe shdocvw.dll,OpenURL %l"

HKEY_LOCAL_MACHINESOFTWAREClassesscrfileshellinstallcommand@

新建键值: 字串: "finder.com desk.cpl,InstallScreenSaver %l"

原键值: 字串: "rundll32.exe desk.cpl,InstallScreenSaver %l"

HKEY_LOCAL_MACHINESOFTWAREClassesscriptletfileShellGenerate Typelibcommand@

新建键值: 字串: ""C:WINDOWSsystem32finder.com" C:WINDOWSsystem32scrobj.dll,GenerateTypeLib "%1""

原键值: 字串: ""C:WINDOWSsystem32RUNDLL32.EXE" C:WINDOWSsystem32scrobj.dll,GenerateTypeLib "%1""

HKEY_LOCAL_MACHINESOFTWAREClasseselnetshellopencommand@

新建键值: 字串: "finder.com url.dll,TelnetProtocolHandler %l"

原键值: 字串: "rundll32.exe url.dll,TelnetProtocolHandler %l"

HKEY_LOCAL_MACHINESOFTWAREClassesUnknownshellopenascommand@

新建键值: 字串: "%SystemRoot%system32finder.com %SystemRoot%system32shell32.dll,OpenAs_RunDLL %1"

原键值: 字串: "%SystemRoot%system32finder.exe %SystemRoot%system32shell32.dll,OpenAs_RunDLL %1"

HKEY_LOCAL_MACHINESOFTWAREClientsStartMenuInternet@

新建键值: 字串: "iexplore.pif"

原键值: 字串: "IEXPLORE.EXE"