Nume:BDS/VB.avf
Descoperit pe data de:29/08/2006
Tip:Backdoor Server
ITW:Nu
Numar infectii raportate:Scazut
Potential de raspandire:Scazut
Potential de distrugere:Mediu
Fisier static:Da
Marime:48.188 Bytes
MD5:eecffebb81611d60d3c82748ac84433a
Versiune VDF:6.35.00.107
Versiune IVDF:6.35.00.133 - vendredi 7 juillet 2006

 General Metoda de raspandire:
   • Nu are rutina proprie de raspandire


Alias:
   •  Symantec: Infostealer.Lemir
   •  Kaspersky: Backdoor.Win32.VB.avf
   •  TrendMicro: BKDR_VB.SE
   •  VirusBuster: Backdoor.VB.WOM
   •  Bitdefender: Backdoor.VB.ARA


Sistem de operare:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Efecte secundare:
   • Creeaza fisiere
   • Modificari in registri
   • Sustrage informatii
   • Posibilitatea accesului neautorizat la computer

 Fisiere Se copiaza in urmatoarele locatii:
   • %WINDIR%\SMSS.EXE
   • %SYSDIR%\rundll32.com
   • %SYSDIR%\finder.com
   • %SYSDIR%\MSCONFIG.COM
   • %SYSDIR%\dxdiag.com
   • %SYSDIR%\regedit.com
   • %WINDIR%\finder.com
   • %WINDIR%\explorer.com
   • %WINDIR%\1.com
   • %WINDIR%\ExERoute.exe
   • %PROGRAM FILES%\Internet Explorer\iexplore.com
   • %SYSDIR%\command.pif
   • %PROGRAM FILES%\Common Files\iexplore.pif
   • D:\pagefile.pif



Sunt create fisierele:

– %WINDIR%\BOOT.BIN.BAK
– D:\autorun.inf

 Registrii sistemului Urmatoarea cheie este adaugata in registri pentru a rula procesul la repornirea sistemului:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "TProgram"="%WINDIR%\SMSS.EXE"



Urmatoarele chei sunt adaugate in registrii sistemului:

– [HKCR\winfiles\DefaultIcon]
   • "(Default)"="%1"

– [HKCR\winfiles\Shell\Open\Command]
   • "(Default)"="%WINDIR%\ExERoute.exe "%1" %*"



Urmatoarele chei din registri sunt modificate:

– [HKCR\.lnk\ShellNew]
   Noua valoare:
   • "command"="rundll32.com appwiz.cpl,NewLinkHere %1"

– [HKCU\Software\Microsoft\Internet Explorer\Main]
   Noua valoare:
   • "Check_Associations"="No"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   Noua valoare:
   • "Shell"="Explorer.exe 1"

– [HKCR\.bfc\ShellNew]
   Noua valoare:
   • "command"="%SystemRoot%\system32\rundll32.com %SystemRoot%\system32syncui.dll,Briefcase_Create %2!d! %1"

– [HKCR\cplfile\shell\cplopen\command]
   Noua valoare:
   • "(Default)"="rundll32.com shell32.dll,Control_RunDLL %1,%*"

– [HKCR\dunfile\shell\open\command]
   Noua valoare:
   • "(Default)"="%SystemRoot%\system32\rundll32.com NETSHELL.DLL,InvokeDunFile %1"

– [HKCR\htmlfile\shell\Print\command]
   Noua valoare:
   • "(Default)"=""%PROGRAM FILES%\Microsoft Office\Office10\msohtmed.exe" /p %1"

– [HKCR\inffile\shell\Install\command]
   Noua valoare:
   • "(Default)"="%SystemRoot%\System32\rundll32.com setupapi,InstallHinfSection DefaultInstall 132 %1"

– [HKCR\InternetShortcut\shell\open\command]
   Noua valoare:
   • "(Default)"="finder.com shdocvw.dll,OpenURL %l"

– [HKCR\scrfile\shell\install\command]
   Noua valoare:
   • "(Default)"="finder.com desk.cpl,InstallScreenSaver %l"

– [HKCR\scriptletfile\Shell\Generate Typelib\command]
   Noua valoare:
   • "(Default)"=""%SYSDIR%\finder.com" %WINDIR%\System32scrobj.dll,GenerateTypeLib "%1""

– [HKCR\telnet\shell\open\command]
   Noua valoare:
   • "(Default)"="finder.com url.dll,TelnetProtocolHandler %l"

– [HKCR\Unknown\shell\openas\command]
   Noua valoare:
   • "(Default)"="%SystemRoot%\system32\finder.com %SystemRoot%\system32\shell32.dll,OpenAs_RunDLL %1"

– [HKCR\htmlfile\shell\open\command]
   Noua valoare:
   • "(Default)"=""%PROGRAM FILES%\Internet Explorer\iexplore.com" -nohome"

– [HKCR\Applications\iexplore.exe\shell\open\command]
   Noua valoare:
   • "(Default)"=""%PROGRAM FILES%\Internet Explorer\iexplore.com" %1"

– [HKCR\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shell\
   OpenHomePage\Command]
   Noua valoare:
   • "(Default)"=""%PROGRAM FILES%\Internet Explorer\iexplore.com""

– [HKCR\ftp\shell\open\command]
   Noua valoare:
   • "(Default)"=""%PROGRAM FILES%\Internet Explorer\iexplore.com" %1"

– [HKCR\htmlfile\shell\opennew\command]
   Noua valoare:
   • "(Default)"=""%PROGRAM FILES%\Common Files\iexplore.pif" %1"

– [HKCR\http\shell\open\command]
   Noua valoare:
   • "(Default)"=""%PROGRAM FILES%\Common Files\iexplore.pif" -nohome"

– [HKCR\Drive\shell\find\command]
   Noua valoare:
   • "(Default)"="%SystemRoot%\explorer.com"

– [HKCR\.exe]
   Noua valoare:
   • "(Default)"="winfiles"

 Terminarea proceselor Lista cu procesele oprite:
   • CCENTER%combinatie de caractere aleatoare%;
      ASSISTSE%combinatie de caractere aleatoare%; KPFW%combinatie
      de caractere aleatoare%; AGENTSVR%combinatie de caractere
      aleatoare%; KV%combinatie de caractere aleatoare%;
      KREG%combinatie de caractere aleatoare%; IEFIND%combinatie
      de caractere aleatoare%; IPARMOR%combinatie de caractere
      aleatoare%; SVI.EXE; UPHC%combinatie de caractere
      aleatoare%; RULEWIZE%combinatie de caractere aleatoare%;
      FYGT%combinatie de caractere aleatoare%; RFWSRV%combinatie
      de caractere aleatoare%; RFWMA%combinatie de caractere
      aleatoare%


 Detaliile fisierului Limbaj de programare:
 Limbaj de programare folosit: Visual Basic.


Compresia fisierului:
Pentru a ingreuna detectia si a reduce marimea fisierului, este folosit un program de compresie runtime.

Description insérée par Monica Ghitun le mardi 29 août 2006
Description mise à jour par Monica Ghitun le vendredi 24 novembre 2006

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