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????Worm/Mytob.f.2
??????
????????
?????
?????????
????????????
?????????????
????????129.024 ???
MD5???????1c7dc60873d67cbe6e853a00d758295c
VDF???????6.30.00.43

 ???? ????
   • E???
   • ???????????


??
   •  Symantec: W32.Mytob.AH@mm
   •  Kaspersky: Net-Worm.Win32.Mytob.x
   •  Sophos: W32/Mytob-BZ
   •  Grisoft I-Worm/Mytob.ED
   •  VirusBuster: I-Worm.Mytob.CF
   •  Eset Win32/Mytob.BG
   •  Bitdefender: Win32.Worm.Mytob.X


????????/OS?
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


???
   • ?????????????????????????????
   • ?????????????
   • ????????????????????
   • ?????????
   • ??????????????
   • ???????????????

 ???? ??????????????????
   • %SYSDIR%\taskgmr.exe
   • C:\funny_pic.scr
   • C:\see_this!!.scr
   • C:\my_photo2005.scr



???????????????

C:\hellmsn.exe ???????????????? ?????????????????????????????????? ?????????????? Worm/Mytob.F.1

 ????? ??????????????????????????????????????????????????

  HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   • "WINTASK"="taskgmr.exe"

  HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
   • "WINTASK"="taskgmr.exe"

  HKCU\Software\Microsoft\Windows\CurrentVersion\Run
   • "WINTASK"="taskgmr.exe"



???????????????????

HKCU\Software\Microsoft\OLE
   • "WINRUN"="taskgmr.exe"

HKLM\SOFTWARE\Microsoft\Ole
   • "WINTASK"="taskgmr.exe"

HKCU\SYSTEM\CurrentControlSet\Control\Lsa
   • "WINTASK"="taskgmr.exe"

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
   • "WINTASK"="taskgmr.exe"

 E??? ???????????SMTP??????????????????????????????????????????????


???
?????????????????(spoof)?
???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????


??:
– ??????????????????????
 ????????????(WAB)????????????????
– ?????????


??
??????
   • %????????%
   • Error
   • Good day
   • hello
   • Mail Delivery System
   • Mail Transaction Failed
   • Server Report
   • Status



??
–  ?????????????
–  ??????????????????????


???????????????
   • Here are your banks documents.
   • Mail transaction failed. Partial message is available.
   • The message cannot be represented in 7-bit ASCII encoding and has been sent as a binary attachment.
   • The message contains Unicode characters and has been sent as a binary attachment.
   • The original message was included as an attachment.


??????
??????????????????????????

–  ????????????????
   • body
   • data
   • doc
   • document
   • file
   • message
   • readme
   • test
   • text
   • %????????%

    ????????????????????
   • bat
   • cmd
   • exe
   • scr
   • pif
   • zip

??????????????????????

?????????????????????????????



???????????????


 ?? ????????
???????????????????????
   • adb
   • tbb
   • dbx
   • asp
   • php
   • sht
   • htm
   • txt
   • wab


TO??FROM???????????
????????????????????????
   • adam; alex; andrew; anna; bill; bob; brenda; brent; brian; britney;
      bush; claudia; dan; dave; david; debby; fred; george; helen; jack;
      james; jane; jerry; jim; jimmy; joe; john; jose; julie; kevin; leo;
      linda; lolita; madmax; maria; mary; matt; michael; mike; peter; ray;
      robert; sam; sandra; serg; smith; stan; steve; ted; tom

???????????????????????????????????????????????????

?????????????
   • hotmail.com
   • cia.gov
   • fbi.gov
   • juno.com
   • yahoo.com
   • msn.com
   • aol.com


???????????
??????????????????????????
   • -._!; -._!@; .edu; .gov; .mil; abuse; accoun; acketst; admin; anyone;
      arin.; avp; be_loyal:; berkeley; borlan; bsd; bugs; certific; contact;
      example; feste; fido; foo.; fsf.; gnu; gold-certs; google; gov.; help;
      iana; ibm.com; icrosof; icrosoft; ietf; info; inpris; isc.o; isi.e;
      kernel; linux; listserv; math; mit.e; mozilla; mydomai; nobody;
      nodomai; noone; not; nothing; ntivi; page; panda; pgp; postmaster;
      privacy; rating; rfc-ed; ripe.; root; ruslis; samples; secur;
      sendmail; service; site; soft; somebody; someone; sopho; submit;
      support; syma; tanford.e; the.bat; unix; usenet; utgers.ed; webmaster;
      www; you; your


MX???????????
???????IP???????????????????????????????
   • gate.
   • mail.
   • mail1.
   • mx.
   • mx1.
   • mxs.
   • ns.
   • relay.
   • smtp.

 ???????? ???????????????????????????????????????????


???????(Exploit)
??????????(Exploit)???????
– MS04-011 (LSASS????)


IP??????
?????IP????????????????2??8????????????????????????????


??????
????????????????????????????????????FTP????????????

 IRC ?????????????????????????????????IRC??????????

??? l0v3ly4.dy**********
???? 6667
????? #xXx[HL]
?????? [I]%????????%
????? .x.



 ???????????????????????????
    • ??????????


 ????????????????????????
    • ???????????
    • ??????
     ???????????????

 ??? ?????????????????????

??????????????????????

????????????????????????????
   • www.symantec.com; securityresponse.symantec.com; symantec.com;
      www.sophos.com; sophos.com; www.mcafee.com; mcafee.com;
      liveupdate.symantecliveupdate.com; www.viruslist.com; viruslist.com;
      viruslist.com; f-secure.com; www.f-secure.com; kaspersky.com;
      www.avp.com; www.kaspersky.com; avp.com; www.networkassociates.com;
      networkassociates.com; www.ca.com; ca.com; mast.mcafee.com;
      my-etrust.com; www.my-etrust.com; download.mcafee.com;
      dispatch.mcafee.com; secure.nai.com; nai.com; www.nai.com;
      update.symantec.com; updates.symantec.com; us.mcafee.com;
      liveupdate.symantec.com; customer.symantec.com; rads.mcafee.com;
      trendmicro.com; www.microsoft.com; www.trendmicro.com




???????????????????????????


 ????? ?????????????

%SYSDIR%\taskgmr.exe TCP???? 10087 FTP??????????

 ??? Mutex(??????)
???Mutex(??????????????
   • H-E-L-L-B-O-T

 ??????? ???????:
?????????????MS Visual C++?????????


??????????
??????????????????????????????????????????????????

説明の挿入者 Irina Boldea の 2006年9月19日火曜日
説明の更新者 Irina Boldea の 2006年10月18日水曜日

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