ifeo映像劫持,防范IFEO映像劫持

防范IFEO映像劫持 - 电脑安全 - 电脑教程网

防范IFEO映像劫持

日期:2006-11-26   荐:
  由于最近病毒都采用了IFEO映像劫持技术,导致杀软无法运行或提示无法打开文件,最近此类病毒非常流行,病毒清除操作起来相对复杂一些,所以今天特意发帖强调大家注意。   关于IFEO的介绍网络上有非常多,本文借用的是剑盟skyshine的帖子内容,感谢原作者!重要的是第五步的预防方法,简单有效,可达到防患于未然,避免中毒的苦恼。   基本症状:可能有朋友遇到过这样的情况,一个正常的程序,无论把他放在哪个位置或者是重新用安装盘修复过的程序,都无法运行或者是比如运行A却成了执行B的程序了,而改名后却可以正常运行。   既然我们是介绍IFEO技术相关,那我们就先介绍下:   一、什么是映像胁持(IFEO)?   所谓的IFEO就是Image File Execution Options是位于注册表的   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Options   由于这个项主要是用来调试程序用的,对一般用户意义不大。默认是只有管理员和local system有权读写修改,先看看常规病毒等怎么修改注册表吧。   那些病毒、蠕虫和,木马等仍然使用众所皆知并且过度使用的注册表键值,如下:   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionWindowsAppInit_DLLs   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWinlogonNotify   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRunOnce   HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionRunServicesOnce   等等……   二、具体使用资料:   下面是蓝色寒冰的一段介绍:   @echo off //关闭命令回显   echo 此批处理只作技巧介绍,请勿用于非法活动!//显示echo后的文字   pause //停止   echo Windows Registry Editor Version 5.00>>ssm.reg   echo [HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionssyssafe.EXE] >>ssm.reg   echo "Debugger"="syssafe.EXE" >>ssm.reg //把echo后的文字导出到SSM.reg中   regedit /s ssm.reg &del /q ssm.reg //导入ssm.reg并删除   使SSM失效HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionssvchost.exe项下的"Debugger"="abc.exe" 意思是不执行svchost.exe而执行abc.exe。   可能说了上面那么多,大家还弄不懂是什么意思,没关系,我们大家一起来看网络上另一个朋友做得试验:   如上图了,开始-运行-regedit,展开到:   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Options 然后选上Image File Execution   Options,新建个项,然后,把这个项(默认在最后面)然后改成123.exe。

  选上123.exe这个项,然后默认右边是空白的,我们点右键,新建个“字串符”,然后改名为“Debugger" 这一步要做好,然后回车,就可以。。。再双击该键,修改数据数值(其实就是路径)。   把它改为 C:windowssystem32CMD.exe   (PS:C:是系统盘,如果你系统安装在D则改为D:如果是NT或2K的系统的话,把Windows改成Winnt,下面如有再T起,类推。)   好了,实验一下。   然后找个扩展名为EXE的,(我这里拿IcesWord.exe做实验),改名为123.exe。   然后运行之,嘿嘿,出现了DOS操作框,不知情的看着一闪闪的光标,肯定觉得特鬼异~^_^。。   一次简单的恶作剧就成咧……   同理,病毒等也可以利用这样的方法,把杀软、安全工具等名字再进行重定向,指向病毒路径。如果你把病毒清理掉后,重定向项没有清理的   话,由于IFEO的作用,没被损坏的程序一样运行不了!   三、映像胁持的基本原理:      NT系统在试图执行一个从命令行调用的可执行文件运行请求时,先会检查运行程序是不是可执行文件,如果是的话,再检查格式的,然后就会检查是否存在。如果不存在的话,它会提示系统找不到文件或者是“指定的路径不正确等等。当然,把这些键删除后,程序就可以运行!   四、映像胁持的具体案例:   引用JM的jzb770325001版主的一个分析案例,蔚为壮观的IFEO,稍微有些名气的都挂了:   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsavp.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsAgentSvr.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsCCenter.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsRav.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsRavMonD.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsRavStub.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsRavTask.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Options fwcfg.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Options fwsrv.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsRsAgent.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsRsaupd.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Options uniep.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsSmartUp.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsFileDsty.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsRegClean.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsðtray.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsðSafe.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsðrpt.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionskabaload.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionssafelive.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsRas.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKASMain.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKASTask.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKAV32.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKAVDX.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKAVStart.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKISLnchr.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKMailMon.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKMFilter.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKPFW32.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKPFW32X.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKPFWSvc.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKWatch9x.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKWatch.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKWatchX.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsTrojanDetector.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsUpLive.EXE.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKVSrvXP.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKvDetect.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKRegEx.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionskvol.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionskvolself.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionskvupload.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionskvwsc.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsUIHost.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsIceSword.exe

  HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsiparmo.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsmmsk.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsadam.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsMagicSet.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsPFWLiveUpdate.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsSREng.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsWoptiClean.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsscan32.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsshcfg32.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsmcconsol.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsHijackThis.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsmmqczj.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsTrojanwall.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsFTCleanerShell.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsloaddll.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Options fwProxy.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKsLoader.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKvfwMcl.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsautoruns.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsAppSvc32.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsccSvcHst.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsisPwdSvc.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionssymlcsvc.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Options od32kui.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionsavgrssvc.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsRfwMain.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKAVPFW.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsIparmor.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Options od32krn.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsPFW.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsRavMon.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsKAVSetup.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsNAVSetup.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsSysSafe.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsQHSET.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Optionszxsweep.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsAvMonitor.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsUmxCfg.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsUmxFwHlp.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsUmxPol.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsUmxAgent.exe   HKLMSOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution OptionsUmxAttachment.exe   从这个案例,我们可以看到这个技术的强大之处!很多的杀软进程和一些辅助杀软或工具,全部被胁持,导致你遇到的所有杀软都无法运行!   试想如果更多病毒,利用于此,将是多么可怕的事情!   五、如何解决并预防IFEO?   方法一:   限制法(转自网络搜索) ——此方法经测试非常有效,即使中毒了,辅助工具仍然能运行,如SREng,这样的就方便清除病毒,所以强烈推荐一般用户操作一次。   它要修改Image File Execution Options,所先要有权限,才可读,于是一条思路就成了。   开始-运行-regedt32 (这个是系统的32位注册表,和注册表操作方法差不多)然后还是展开到:   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Options 右键——选择权限   方法二:   把[HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Options]项删除即可   方法三:   使用IFEO映像挟持修复程序修复!
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