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中华网络安全联盟 作者：奇趣 来源：奇趣 时间：2006-9-12
这只鸽子提示：中招后，贴日志求助的日子即将结束！做好系统基础安全防护是每个用户的当务之急。“基础安全防护”绝不仅仅是打几个补丁的问题。熟悉一两个性能好的安全软件的使用也是必要的。否则，中招后，你自己就着急吧！
这只鸽子的要害是c:\windows\winlogon.dll。如果用SSM禁止这个dll加载运行，鸽子的文件全部可见。
这是Movgear.exe中捆绑的一只灰鸽子（Movgear.exe样本来自安全12公里）。winlogon.exe的MD5值为：2de9f62c2b405e16cb66773747cf0f2d。
一、自Movgear.exe中提取winlogon.exe并将其植入系统后，autoruns、HijackThis、SREng日志中均无任何异常发现。
winlogon.exe释放的文件有：
1、c:\windows\winlogon.exe
2、c:\windows\winlogon.dll
3、c:\windows\winlogonKey.dll
这两个dll插入IE浏览器进程。
即使不打开IE浏览器，IceSword的进程列表中依然可见iexplore.exe。
c:\windows\winlogonKey.dll动态跟踪所有应用程序进程（一旦开启，立即插入。）
注意：即使显示隐藏文件，用WINDOWS的资源管理器也看不到灰鸽子释放的这三个文件。用IceSword才能看到。
二、注册表改动包括：
1、在HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
添加：winlogon.exe（指向c:\windows\winlogon.exe）
2、在HKEY_USERS\.DEFAULT\Software\Microsoft\Internet Explorer\Extensions\CmdMapping
添加：
"{92780B25-18CC-41C8-B9BE-3C9C571A8263}"=dword:00002002
"{DEDEB80D-FA35-45d9-9460-4983E5A8AFE6}"=dword:00002002
"{FB5F1910-F110-11d2-BB9E-00C04F795683}"=dword:00002001
3、在HKEY_USERS\.DEFAULT\Software\Microsoft\Internet Connection Wizard
添加："Completed"=hex:01,00,00,00
4、在HKEY_USERS\.DEFAULT\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser
添加：
"ITBarLayout"=hex:11,00,00,00,5c,00,00,00,00,00,00,00,34,00,00,00,1f,00,00,00,56,\
00,00,00,01,00,00,00,20,07,00,00,a0,0f,00,00,05,00,00,00,62,05,\
00,00,26,00,00,00,02,00,00,00,21,07,00,00,a0,0f,00,00,04,00,00,\
00,21,01,00,00,a0,0f,00,00,03,00,00,00,20,03,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
"{01E04581-4EEE-11D0-BFE9-00AA005B4383}"=hex:81,45,e0,01,ee,4e,d0,11,bf,e9,00,aa,00,5b,43,83,10,00,00,00,00,\
00,00,00,01,e0,32,f4,01,00,00,00
"{0E5CBF21-D15F-11D0-8301-00AA005B4383}"=hex:21,bf,5c,0e,5f,d1,d0,11,83,01,00,aa,00,5b,43,83,22,00,1c,00,08,\
00,00,00,06,00,00,00,01,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,4c,00,00,00,01,14,02,00,00,00,00,00,c0,00,00,00,00,00,00,\
46,81,00,00,00,10,00,00,00,a0,8f,ff,ba,9d,d4,c6,01,00,9e,02,bb,\
9d,d4,c6,01,a0,8f,ff,ba,9d,d4,c6,01,00,00,00,00,00,00,00,00,01,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,5d,01,14,00,1f,50,\
e0,4f,d0,20,ea,3a,69,10,a2,d8,08,00,2b,30,30,9d,19,00,2f,43,3a,\
5c,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,5c,\
00,31,00,00,00,00,00,3a,31,09,3c,10,00,44,4f,43,55,4d,45,7e,31,\
00,00,44,00,03,00,04,00,ef,be,3a,31,9c,36,2a,35,f7,29,14,00,00,\
00,44,00,6f,00,63,00,75,00,6d,00,65,00,6e,00,74,00,73,00,20,00,\
61,00,6e,00,64,00,20,00,53,00,65,00,74,00,74,00,69,00,6e,00,67,\
00,73,00,00,00,18,00,4c,00,31,00,00,00,00,00,2a,35,cb,2e,16,00,\
4e,45,54,57,4f,52,7e,31,00,00,34,00,03,00,04,00,ef,be,3a,31,11,\
39,2a,35,cb,2e,14,00,00,00,4e,00,65,00,74,00,77,00,6f,00,72,00,\
6b,00,53,00,65,00,72,00,76,00,69,00,63,00,65,00,00,00,18,00,56,\
00,31,00,00,00,00,00,2a,35,cb,2e,11,00,46,41,56,4f,52,49,7e,31,\
00,00,3e,00,03,00,04,00,ef,be,2a,35,cb,2e,2a,35,cb,2e,14,00,28,\
00,46,00,61,00,76,00,6f,00,72,00,69,00,74,00,65,00,73,00,00,00,\
40,73,68,65,6c,6c,33,32,2e,64,6c,6c,2c,2d,31,32,36,39,33,00,18,\
00,30,00,35,00,00,00,00,00,2a,35,f1,2e,10,00,fe,94,a5,63,00,00,\
1c,00,03,00,04,00,ef,be,2a,35,f1,2e,2a,35,f1,2e,14,00,00,00,fe,\
94,a5,63,00,00,14,00,00,00,60,00,00,00,03,00,00,a0,58,00,00,00,\
00,00,00,00,6c,69,6e,62,61,6f,68,65,00,00,00,00,00,00,00,00,1e,\
8c,63,4d,34,72,b3,48,8a,de,83,67,8f,38,be,10,b1,a9,fd,89,90,40,\
db,11,b2,29,00,d0,59,c0,b8,59,1e,8c,63,4d,34,72,b3,48,8a,de,83,\
67,8f,38,be,10,b1,a9,fd,89,90,40,db,11,b2,29,00,d0,59,c0,b8,59,\
00,00,00,00
5、在HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\CabinetState
添加："Settings"=hex:0c,00,02,00,0a,01,ef,75,60,00,00,00
6、在HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\
添加：
{0055C089-8582-441B-A0BF-17B458C2A3A8}
{06849E9F-C8D7-4D59-B87D-784B7D6BE0B3}
{92780B25-18CC-41C8-B9BE-3C9C571A8263}
{AE7CD045-E861-484F-8273-0445EE161910}
{DEDEB80D-FA35-45D9-9460-4983E5A8AFE6}
{FB5F1910-F110-11D2-BB9E-00C04F795683}
7、在HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Favorites\链接
添加："Order"=hex:08,00,00,00,02,00,00,00,0c,00,00,00,01,00,00,00,00,00,00,00
三、进行上述观察后，重启系统。
重启后，卡巴斯基报警（我的卡巴斯基为启动加载）：发现灰鸽子。但卡巴斯基仅仅将c:\windows\winlogon.dll删除；c:\windows\winlogon.exe和c:\windows\winlogonKey.dll卡巴斯基并不报毒。汗！！卡巴斯基越来越不争气了
另外发现其winlogonKey.log文件。文件内容为：
#?>.?:4?74;<jk7h8萃GMKULome}~omkSULome}~omkSmk]ya|j鼻苴焙怀跺佥拿顾皇朗拆ULome}~omkSjbbjbbEkw铣而jbb朗拆茧棋gULome}~omkSGK辍挝腮出铰GKGmk]ya|j皇出铰限裤剞芪频鼻蝉gkvb~ULome}~omkSULome}~omkS~ba|k kvkULome}~omkSULome}~omkS佻硷裤妒浮掘桅?
四、查杀流程：
1、打开注册表编辑器，展开HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
删除灰鸽子的服务项：winlogon.exe
2、重启系统。用IceSword找到并删除鸽子释放的那三个文件。
4、清理注册表（删除鸽子添加的注册表项）。 |
