Win32.Troj.Zdesnado.y

王朝system·作者佚名  2008-08-14
窄屏简体版  字體: |||超大  

病毒名称(中文):

病毒别名:

Trojan-Downloader.Win32.Zdesnado.y[AVP]

威胁级别:

★★☆☆☆

病毒类型:

木马程序

病毒长度:

32260

影响系统:

Win9xWinNT

病毒行为:

这是一个木马下载器,用于下载并执行木马。它是通过读取两个网页配置文件去下载并运行木马的。比一般的木马下载器更加灵活,危害也更大。通过设置4个时钟,它会每隔一定时间做以下操作:定时修改启动项,是自己能够开机运行,并且到指定网址取得配置文件用来下载新的病毒;定时终止某些进程,可以是反病毒软件防火墙;定时修改host文件,使得很多反病毒软件不能正常升级;定时修改用户的主页指向某个网页,使得用户打开浏览器时首先访问病毒设置的网页,从而感染病毒。

1.创建互斥体kakogo_cherta_tebe_zdes_nado,防止运行病毒的多个实例。

2.将自身复制到%System%\Software\software.exe,修改文件%System%\drivers\etc\hosts,在该文件后面追加一下内容:

127.0.0.1www.iframedollars.biz

127.0.0.1iframedollars.biz

127.0.0.1www.allforadult.com

127.0.0.1allforadult.com

127.0.0.1www.vesbiz.biz

127.0.0.1vesbiz.biz

127.0.0.1www.aaasexypics.com

127.0.0.1aaasexypics.com

127.0.0.1www.virgin-tgp.net

127.0.0.1virgin-tgp.net

127.0.0.1www.5sec.biz

127.0.0.15sec.biz

127.0.0.1www.avp.com

127.0.0.1www.viruslist.com

127.0.0.1viruslist.com

127.0.0.1www.symantec.com

127.0.0.1networkassociates.com

127.0.0.1secure.nai.com

127.0.0.1downloads1.kaspersky-labs.com

127.0.0.1downloads2.kaspersky-labs.com

127.0.0.1downloads3.kaspersky-labs.com

127.0.0.1downloads4.kaspersky-labs.com

127.0.0.1downloads-us1.kaspersky-labs.com

127.0.0.1downloads-eu1.kaspersky-labs.com

127.0.0.1kaspersky-labs.com

127.0.0.1www.networkassociates.com

127.0.0.1us.mcafee.com

127.0.0.1f-secure.com

127.0.0.1avp.com

127.0.0.1www.sophos.com

127.0.0.1sophos.com

127.0.0.1www.ca.com

127.0.0.1ca.com

127.0.0.1securityresponse.symantec.com

127.0.0.1symantec.com

127.0.0.1mast.mcafee.com

127.0.0.1my-etrust.com

127.0.0.1www.kaspersky.com

127.0.0.1www.f-secure.com

127.0.0.1dispatch.mcafee.com

127.0.0.1update.symantec.com

127.0.0.1nai.com

127.0.0.1www.nai.com

127.0.0.1liveupdate.symantec.com

127.0.0.1customer.symantec.com

127.0.0.1rads.mcafee.com

127.0.0.1trendmicro.com

127.0.0.1liveupdate.symantecliveupdate.com

127.0.0.1www.mcafee.com

127.0.0.1mcafee.com

127.0.0.1viruslist.com

127.0.0.1www.my-etrust.com

127.0.0.1download.mcafee.com

127.0.0.1updates.symantec.com

127.0.0.1kaspersky.com

127.0.0.1www.trendmicro.com

127.0.0.1conyc.com

下载网页文件到:%system%\ysb.exe

创建目录%SystemRoot%\test

2.修改注册表:

添加表项:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

"Software"="%System%\Software\software.exe"

HKEY_LOCAL_MACHINE\Software\Microsoft\InternetExplorer\Main

"StartPage"="<变化的值>"

"FlagStop"=dword:1

或者

"FlagInstall"=dword:1

修改表项:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\InternetSettings\Zones\2

"1001"=dword:47

"Flags"=dword:0

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\InternetSettings\Zones\2

"1001"=dword:47

"Flags"=dword:0

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\InternetSettings\Zones\3

"1001"=dword:0

"Flags"=dword:1

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\InternetSettings\Zones\3

"1001"=dword:0

"Flags"=dword:1

HKEY_USERS\.Default\Software\Microsoft\Windows\CurrentVersion\InternetSettings"TrustWarningLevel"="NoSecurity"

"SafetyWarningLevel"="SucceedSilent"

"CodeDownload"="Yes"

"Security_RunActiveXControls"

"Security_RunScripts"

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\InternetSettings"TrustWarningLevel"="NoSecurity"

"SafetyWarningLevel"="SucceedSilent"

"CodeDownload"="Yes"

"Security_RunActiveXControls"

"Security_RunScripts"

HKEY_USERS\.Default\Software\Microsoft\InternetExplorer\Security

"TrustWarningLevel"="NoSecurity"

"SafetyWarningLevel"="SucceedSilent"

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\InternetSettings\ZoneMap\ProtocolDefaults

"http"

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\InternetSettings\ZoneMap\Domains

"Trusted"

"CurrentLevel"

"RecommendedLevel"

"MinLevel"

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\InternetSettings\ZoneMap\Domains

"Trusted"

"CurrentLevel"

"RecommendedLevel"

"MinLevel"

3.通过设置4个时钟,它会每隔一定时间做以下操作:定时修改启动项,是自己能够开机运行,并且到指定网址取得配置文件用来下载新的病毒;定时终止某些进程,可以是反病毒软件防火墙;定时修改host文件,使得很多反病毒软件不能正常升级;定时修改用户的主页指向某个网页,使得用户打开浏览器时首先访问病毒设置的网页,从而感染病毒。

终止的进程:

ir.exe

intron.exe

printer32.exe

ykyrtws.exe

loadclean.exe

telnet.exe

lpt.exe

systime.exe

toolbar.exe

mstasks1.exe

mstasks2.exe

mstasks3.exe

loadadv.exe

 
 
 
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