瑞星卡卡安全论坛综合娱乐区Rising茶馆 新AV终结者采用ring3级hook技术删除杀毒软件

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新AV终结者采用ring3级hook技术删除杀毒软件

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发表于： 2007-09-28 11:45 | 只看楼主 短消息 资料
字号： 小 中 大 1楼

新AV终结者采用ring3级hook技术删除杀毒软件


专业的人做专业的事情，弓虽病毒AV终结者又有了新的变种！而且似乎弓虽到了逆天！居然可以Ring3级技术来删除AV软件的关键程序，汗颜。不过俗话说“魔高一尺，道高一丈”，金山的病毒专家铁军还是找到了对付的办法，下面演示给大家哈。
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。

以下是详细分析报告：

病毒名： Win32.Troj.AvKiller.hd.212992

病毒利用WH_CALLWNDPROC类型的挂钩将自身注入其他进程

**释放文件**
C:\WINDOWS\system32\nfxphzn.jbt 该文件为kernel32.dll的拷贝
c:\WINDOWS\system32\yqia.btl  该文件为病毒自身的拷贝

**下载文件**
w3.hao5555.com/v3/pic.bmp
w3.hao5555.com/v3/Riched32.dll
w3.hao5555.com/v3/search.asp
w3.hao5555.com/bd.dll

**修改的注册表**
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad]
"xphz"="{1b5f93d7-93d7-0a4e-4e82-93d71b5f93d7}"

[HKEY_CLASSES_ROOT\CLSID\{1b5f93d7-93d7-0a4e-4e82-93d71b5f93d7}\InprocServer32]
@="C:\\WINDOWS\\system32\\yqia.btl"
"ThreadingModel"="Apartment"

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\System]
"DisableCMD"=dword:00000001

**挂接函数**
RegEnumValueA
RegEnumValueW -- 目的为隐藏病毒添加的注册表键值

CreateFileA
CreateFileW  -- 目的为保护病毒释放的文件

**卸载组件**
regsvr32.exe /u /s wshom.ocx

病毒自身通过nfxphzn.jbt来调用CreateFileA和CreateFileW函数

病毒注入系统的其他进程后
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。
127.0.0.1      localhost
61.152.244.167 search.114.vnet.cn
61.152.244.167 auto.search.msn.com
61.152.244.167 search.msn.com
61.152.244.167 cnweb.search.live.com
61.152.244.167 search.live.com
61.152.244.167  www.hao123.com
61.152.244.167  hao123.com
61.152.244.167  www.360safe.com
61.152.244.167  360safe.com
222.73.126.115  update.360safe.com
61.152.244.167  dl.360safe.com
61.152.244.167  bbs.360safe.com
61.152.244.167  www.btbaicai.com
61.152.244.167  btbaicai.com
61.152.244.167  www.pctutu.com
61.152.244.167  www.7322.com
61.152.244.167  www.5566.net
61.152.244.167  www.9991.com
61.152.244.167  9991.com
61.152.244.167  forum.ikaka.com
61.152.244.167  www.ikaka.com
222.73.126.115  update.ikaka.com
61.152.244.167  forum.jiangmin.com
222.73.126.115  update.jiangmin.com
61.152.244.167  post.baidu.com
222.73.126.115  update.rising.com.cn
61.152.244.167  online.rising.com.cn
222.73.126.115  center.rising.com.cn 
61.152.244.167  up.duba.net
61.152.244.167  shadu.baidu.com
61.152.244.167  security.symantec.com
61.152.244.167  shadu.duba.net
61.152.244.167  online.jiangmin.com
61.152.244.167  cn.mcafee.com
61.152.244.167  www.ahn.com.cn
61.152.244.167  www.kaspersky.com.cn
61.152.244.167  www.pcav.cn
61.152.244.167  mopery.hits.io
61.152.244.167  www.luosoft.com
61.152.244.167  luosoft.com
61.152.244.167  www.im286.com
61.152.244.167  bbs.htmlman.net
61.152.244.167  10000.286er.com
61.152.244.167  im286.net
61.152.244.167  cool.47555.com
61.152.244.167  ju.qihoo.com
61.152.244.167  bbs.chinaz.com
222.73.126.115 dnl-cn1.kaspersky-labs.com
222.73.126.115 dnl-cn2.kaspersky-labs.com
222.73.126.115 dnl-cn3.kaspersky-labs.com
222.73.126.115 dnl-cn4.kaspersky-labs.com
222.73.126.115 dnl-cn5.kaspersky-labs.com
222.73.126.115 dnl-cn6.kaspersky-labs.com
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222.73.126.115 dnl-cn11.kaspersky-labs.com
222.73.126.115 dnl-cn12.kaspersky-labs.com
222.73.126.115 dnl-cn13.kaspersky-labs.com
222.73.126.115 dnl-cn14.kaspersky-labs.com
222.73.126.115 dnl-cn15.kaspersky-labs.com
222.73.126.115  dnl-eu1.kaspersky-labs.com
222.73.126.115  dnl-eu2.kaspersky-labs.com
222.73.126.115  dnl-eu3.kaspersky-labs.com
222.73.126.115  dnl-eu4.kaspersky-labs.com
222.73.126.115  dnl-eu5.kaspersky-labs.com
222.73.126.115  dnl-eu6.kaspersky-labs.com
222.73.126.115  dnl-eu7.kaspersky-labs.com
222.73.126.115  dnl-eu8.kaspersky-labs.com
222.73.126.115  dnl-eu9.kaspersky-labs.com
222.73.126.115  dnl-eu10.kaspersky-labs.com
222.73.126.115  dnl-eu11.kaspersky-labs.com
222.73.126.115  dnl-eu12.kaspersky-labs.com
222.73.126.115  dnl-eu13.kaspersky-labs.com
222.73.126.115  dnl-eu14.kaspersky-labs.com
222.73.126.115  dnl-eu15.kaspersky-labs.com
222.73.126.115  dnl-us1.kaspersky-labs.com
222.73.126.115  dnl-us2.kaspersky-labs.com
222.73.126.115  dnl-us3.kaspersky-labs.com
222.73.126.115  dnl-us4.kaspersky-labs.com
222.73.126.115  dnl-us5.kaspersky-labs.com
222.73.126.115  dnl-us6.kaspersky-labs.com
222.73.126.115  dnl-us7.kaspersky-labs.com
222.73.126.115  dnl-us8.kaspersky-labs.com
222.73.126.115  dnl-us9.kaspersky-labs.com
222.73.126.115  dnl-us10.kaspersky-labs.com
222.73.126.115  dnl-us11.kaspersky-labs.com
222.73.126.115  dnl-us12.kaspersky-labs.com
222.73.126.115  dnl-us13.kaspersky-labs.com
222.73.126.115  dnl-us14.kaspersky-labs.com
222.73.126.115  dnl-us15.kaspersky-labs.com
222.73.126.115  dnl-ru1.kaspersky-labs.com
222.73.126.115  dnl-ru2.kaspersky-labs.com
222.73.126.115  dnl-ru3.kaspersky-labs.com
222.73.126.115  dnl-ru4.kaspersky-labs.com
222.73.126.115  dnl-ru5.kaspersky-labs.com
222.73.126.115  dnl-ru6.kaspersky-labs.com
222.73.126.115  dnl-ru7.kaspersky-labs.com
222.73.126.115  dnl-ru8.kaspersky-labs.com
222.73.126.115  dnl-ru9.kaspersky-labs.com
222.73.126.115  dnl-ru10.kaspersky-labs.com
222.73.126.115  dnl-ru11.kaspersky-labs.com
222.73.126.115  dnl-ru12.kaspersky-labs.com
222.73.126.115  dnl-ru13.kaspersky-labs.com
222.73.126.115  dnl-ru14.kaspersky-labs.com
222.73.126.115  dnl-ru15.kaspersky-labs.com
222.73.126.115  dnl-jp1.kaspersky-labs.com
222.73.126.115  dnl-jp2.kaspersky-labs.com
222.73.126.115  dnl-jp3.kaspersky-labs.com
222.73.126.115  dnl-jp4.kaspersky-labs.com
222.73.126.115  dnl-jp5.kaspersky-labs.com
222.73.126.115  dnl-jp6.kaspersky-labs.com
222.73.126.115  dnl-jp7.kaspersky-labs.com
222.73.126.115  dnl-jp8.kaspersky-labs.com
222.73.126.115  dnl-jp9.kaspersky-labs.com
222.73.126.115  dnl-jp10.kaspersky-labs.com
222.73.126.115  dnl-jp11.kaspersky-labs.com
222.73.126.115  dnl-jp12.kaspersky-labs.com
222.73.126.115  dnl-jp13.kaspersky-labs.com
222.73.126.115  dnl-jp14.kaspersky-labs.com
222.73.126.115  dnl-jp15.kaspersky-labs.com
222.73.126.115  dnl-kr1.kaspersky-labs.com
222.73.126.115  dnl-kr2.kaspersky-labs.com
222.73.126.115  dnl-kr3.kaspersky-labs.com
222.73.126.115  dnl-kr4.kaspersky-labs.com
222.73.126.115  dnl-kr5.kaspersky-labs.com
222.73.126.115  dnl-kr6.kaspersky-labs.com
222.73.126.115  dnl-kr7.kaspersky-labs.com
222.73.126.115  dnl-kr8.kaspersky-labs.com
222.73.126.115  dnl-kr9.kaspersky-labs.com
222.73.126.115  dnl-kr10.kaspersky-labs.com
222.73.126.115  dnl-kr11.kaspersky-labs.com
222.73.126.115  dnl-kr12.kaspersky-labs.com
222.73.126.115  dnl-kr13.kaspersky-labs.com
222.73.126.115  dnl-kr14.kaspersky-labs.com
222.73.126.115  dnl-kr15.kaspersky-labs.com
222.73.126.115 dnl-cd1.kaspersky-labs.com
222.73.126.115 dnl-cd2.kaspersky-labs.com
222.73.126.115 dnl-cd3.kaspersky-labs.com
222.73.126.115 dnl-cd4.kaspersky-labs.com
222.73.126.115 dnl-cd5.kaspersky-labs.com
222.73.126.115 dnl-cd6.kaspersky-labs.com
222.73.126.115 dnl-cd7.kaspersky-labs.com
222.73.126.115 dnl-cd8.kaspersky-labs.com
222.73.126.115 dnl-cd9.kaspersky-labs.com
222.73.126.115 dnl-cd10.kaspersky-labs.com
222.73.126.115 dnl-cd11.kaspersky-labs.com
222.73.126.115 dnl-cd12.kaspersky-labs.com
222.73.126.115 dnl-cd13.kaspersky-labs.com
222.73.126.115 dnl-cd14.kaspersky-labs.com
222.73.126.115 dnl-cd15.kaspersky-labs.com
61.152.244.167  ishare.sina.com.cn
61.152.244.167  search.cn.yahoo.com
61.152.244.167  www.google.com
61.152.244.167  google.com
61.152.244.167  www.google.cn
61.152.244.167  www.sogou.com
61.152.244.167  www.yahoo.com.cn
61.152.244.167  cn.yahoo.com
222.73.210.148  www.comewz.com
61.152.244.167  search.tom.com
61.152.244.167  page.so.163.com
61.152.244.167  www.soso.com
61.152.244.167  sou.china.com
61.152.244.167  toolsbar.kuaiso.com
61.152.244.167  www.kuaiso.com

查询61.152.244.167，位于上海电信机房，whois信息如下：
WHOIS results for: 61.152.244.167
% Joint Whois
%  This server accepts single ASN, IPv4 or IPv6 queries

% [whois.apnic.net node-2]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

inetnum:      61.152.244.160 - 61.152.244.191
netname:      ZhongXin
descr:      ZhongXin
country:      CN
admin-c:      XCM3-AP
tech-c:      HY174-AP
mnt-by:      MAINT-CHINANET-SH
changed:      coconut-huang@edatahome.com  20030423
status:      ASSIGNED NON-PORTABLE
source:      APNIC

person:      Xu Chun Ming
address:      15F,618 East Yanan Road,Shanghai  200001
country:      CN
phone:        +86-21-50600014
fax-no:      +86-21-53854142
e-mail:      springknow@online.sh.cn
nic-hdl:      XCM3-AP
mnt-by:      MAINT-CN-SHTELE-DATAIDC
changed:      coconut-huang@edatahome.com    20021007
source:      APNIC

person:      Huang Yi
address:      15F,618 East Yanan Road,Shanghai  200001
country:      CN
phone:        +86-21-50600014
fax-no:      +86-21-53854142
e-mail:      coconut-huang@edatahome.com
nic-hdl:      HY174-AP
mnt-by:      MAINT-CN-SHTELE-DATAIDC
changed:      coconut-huang@edatahome.com    20021007
source:      APNIC


手动解决该病毒的办法：
使用金山清理专家，将下列文件添加到彻底删除的列表，粉碎掉，然后立即重启电脑。
C:\WINDOWS\system32\nfxphzn.jbt
c:\WINDOWS\system32\yqia.btl

重启电脑，使用金山清理专家全面检测修复功能，将下面的系统执行挂钩项修复掉。
**修改的注册表**
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad]
"xphz"="{1b5f93d7-93d7-0a4e-4e82-93d71b5f93d7}"

[HKEY_CLASSES_ROOT\CLSID\{1b5f93d7-93d7-0a4e-4e82-93d71b5f93d7}\InprocServer32]
@="C:\\WINDOWS\\system32\\yqia.btl"
"ThreadingModel"="Apartment"

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\System]
"DisableCMD"=dword:00000001

手动编辑hosts文件，对多数用户来说，在这里：
c:\windows\system32\drivers\etc\hosts

除保留127.0.0.1      localhost这一行外，其它内容全部清空

[用户系统信息]Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Alexa Toolbar)
最后编辑2007-09-28 15:00:12
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gototop
 
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初生襁褓狮
  • 帖子:59
  • 注册: 2007-05-06
  • 来自:
发表于： 2007-09-28 15:11 | 短消息 资料
字号： 小 中 大 2楼

希望金山不要拿这样的事情来吓唬人，旧的AV金山都无能为力呢。
gototop
 
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