解析新AV终结者对抗杀毒软件技术机制

豆豆网   技术应用频道   2007年09月25日    社区交流

内容摘要:近期截获最新的AV终结者,该变种采用ring3级hook技术直接删除杀毒软件,劫持众多网站,阻止杀毒软件更新。专杀程序紧张制作中,测试通过会及时发布,老版本AV终结者专杀运行后会自动升级。

  (1)创建一个线程来保护其添加的注册表键值不被删除;

  (2)结束杀毒软件进程;

  (3)通过将ZwCreateFile的前两个字节填0加以破坏;

  (4)并试图删除以下文件,(主要是杀毒软件和流氓软件清除工具的驱动、程序文件)

   "mmskskin.dll"
  "KKClean.dll"
  "VirUnk.def"
  "AntiActi.dll"
  "Rsaupd.exe"
  "Iereset.dll"
  "Libclsid.dat"
  "KNetWch.SYS"
  "CleanHis.dll"
  "WoptiClean.sys"
  "kakalib.def"
  "libdll.dat"
  "kkinst.ini"
  "KASearch.DLL"
  "KAVBootC.sys"
  "Ras.exe"
  "iehelp.exe"
  "trojandetector.exe"
  "KAConfig.DLL"
  "KAVPassp.DLL"
  "hsfw.dll"

  **修改hosts文件为**

  hosts文件被修改后,会影响很多杀毒软件和反流氓软件的升级,影响访问相关网站

  (注意一下61.152.244.167这个IP,下面发现众多流量很高的站点被劫持到61.152.244.167,可以尝试一下在IE地址栏中输入这个IP,你发现去了cn.yahoo.com)难道这个病毒在替yahoo做流量?我是不相信的,马云成功在望,不会采取这种流氓手段劫持其它网站的流量,我怀疑是栽赃。或者,中国yahoo的网盟政策被利用了。

   127.0.0.1localhost
  61.152.244.167search.114.vnet.cn
  61.152.244.167auto.search.msn.com
  61.152.244.167search.msn.com
  61.152.244.167cnweb.search.live.com
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  61.152.244.167www.hao123.com
  61.152.244.167hao123.com
  61.152.244.167www.360safe.com
  61.152.244.167360safe.com
  222.73.126.115update.360safe.com
  61.152.244.167dl.360safe.com
  61.152.244.167bbs.360safe.com
  61.152.244.167www.btbaicai.com
  61.152.244.167btbaicai.com
  61.152.244.167www.pctutu.com
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  61.152.244.167www.9991.com
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  222.73.126.115update.ikaka.com
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  61.152.244.167post.baidu.com
  222.73.126.115update.rising.com.cn
  61.152.244.167online.rising.com.cn
  222.73.126.115center.rising.com.cn
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  61.152.244.167mopery.hits.io
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  222.73.126.115dnl-kr1.kaspersky-labs.com
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  222.73.126.115dnl-kr14.kaspersky-labs.com
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  222.73.126.115dnl-cd1.kaspersky-labs.com
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来源:IT专家网    作者:李铁军    责编:豆豆技术应用

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