Nume:Joke/Renos.W
Descoperit pe data de:31/10/2005
Tip:Troian
ITW:Nu
Numar infectii raportate:Scazut
Potential de raspandire:Scazut
Potential de distrugere:Scazut spre mediu
Fisier static:Da
Marime:28.160 Bytes
MD5:fa7582def8348c22b69a4bb360eff64b
Versiune VDF:6.32.00.117

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


Alias:
   •  Mcafee: Downloader-AFH
   •  Kaspersky: not-virus:Hoax.Win32.Renos.s


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


Efecte secundare:
   • Descarca un fisier
   • Creeaza un fisier
   • Modificari in registri


Imediat dupa lansarea in executie, pe ecran este afisat:


 Fisiere Se copiaza in urmatoarea locatie:
   • c:\winstall.exe



Sunt create fisierele:

– Fisiere inofensive:
   • C:\Program Files\SpySheriff\base.avd; C:\Program
      Files\SpySheriff\base001.avd; C:\Program Files\SpySheriff\base002.avd;
      C:\Program Files\SpySheriff\found.wav; C:\Program
      Files\SpySheriff\heur000.dll; C:\Program Files\SpySheriff\heur001.dll;
      C:\Program Files\SpySheriff\heur002.dll; C:\Program
      Files\SpySheriff\heur003.dll; C:\Program Files\SpySheriff\IESecurity.dll;
      C:\Program Files\SpySheriff\notfound.wav; C:\Program
      Files\SpySheriff\ProcMon.dll; C:\Program Files\SpySheriff\removed.wav;
      C:\Program Files\SpySheriff\SpySheriff.exe; C:\Program
      Files\SpySheriff\Uninstall.exe; C:\Program Files\SpySheriff\SpySheriff.dvm

– Creeaza o arhiva ce contine o copie malware:
   • %PROGRAM FILES%\asdfasdfasdfasdfasdfasdfasdfasdf

– %WINDIR%\desktop.html



Incearca sa descarce un fisier:

– Adresa este urmatoarea:
   • www.spy**********.com/trial.php?rest=0&ver=14087464&a=00000088
Fisierul este stocat pe hard disc la: %HOME%\Application Data\Install.dat In plus, acest fisier este executat dupa ce este descarcat de pe Internet.

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

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Windows installer"="c:\winstall.exe"



Valorile urmatoarelor chei sunt sterse din registrii sistemului:

–  [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • pro

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
   • NoDesktop



Se sterg urmatoarele chei din registri, inclusiv toate valorile si cheile subordnate:
   • [HKCU\SOFTWARE\Install]
   • [HKCU\Software\Microsoft\Internet Explorer\Desktop\Components]
   • [HKCU\Software\Microsoft\Internet Explorer\Desktop\Components\0]



Urmatoarele chei sunt adaugate in registrii sistemului:

– [HKCU\Software\Microsoft\Internet Explorer\Desktop\Components]
   • "DeskHtmlVersion"=dword:00000110
   • "DeskHtmlMinorVersion"=dword:00000005
   • "Settings"=dword:00000001
   • "GeneralFlags"=dword:00000000

– [HKCU\Software\Microsoft\Internet Explorer\Desktop\Components\0]
   • "Source"="About:Home"
   • "SubscribedURL"="About:Home"
   • "FriendlyName"="My Current Home Page"
   • "Flags"=dword:00000002
   • "Position"=hex:%valori hex%
   • "CurrentState"=dword:40000004
   • "OriginalStateInfo"=hex:%valori hex%
   • "RestoredStateInfo"=hex::%valori hex%



Urmatoarele chei din registri sunt modificate:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System]
   Vechea valoare:
   • "Wallpaper"="%setarile utilizatorului%"
   Noua valoare:
   • "Wallpaper"="%WINDIR%\desktop.html"

– [HKCU\Control Panel\Desktop]
   Vechea valoare:
   • "Pattern"="%setarile utilizatorului%"
   Noua valoare:
   • "Pattern"=""

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
   Vechea valoare:
   • "NoDriveTypeAutoRun"=dword:%setarile utilizatorului%
     "NoActiveDesktop"=dword:%setarile utilizatorului%
     "ClassicShell"=dword:%setarile utilizatorului%
     "ForceActiveDesktopOn"=dword:%setarile utilizatorului%
   Noua valoare:
   • "NoDriveTypeAutoRun"=dword:00000091
     "NoActiveDesktop"=dword:00000000
     "ClassicShell"=dword:00000000
     "ForceActiveDesktopOn"=dword:00000001

– [HKCU\Software\Microsoft\Internet Explorer\Desktop\General]
   Vechea valoare:
   • "WallpaperFileTime"=hex:%setarile utilizatorului%
     "WallpaperLocalFileTime"=hex:%setarile utilizatorului%
     "TileWallpaper"="%setarile utilizatorului%"
     "WallpaperStyle"="%setarile utilizatorului%"
     "ComponentsPositioned"=dword:%setarile utilizatorului%
   Noua valoare:
   • "WallpaperFileTime"=hex:be,a1,a0,ff,22,de,c5,01
     "WallpaperLocalFileTime"=hex:be,71,29,c3,33,de,c5,01
     "TileWallpaper"="0"
     "WallpaperStyle"="2"
     "ComponentsPositioned"=dword:00000002

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\
   ActiveDesktop]
   Vechea valoare:
   • "NoChangingWallpaper"=dword:%setarile utilizatorului%
     "NoComponents"=dword:%setarile utilizatorului%
     "NoAddingComponents"=dword:%setarile utilizatorului%
     "NoDeletingComponents"=dword:%setarile utilizatorului%
     "NoEditingComponents"=dword:%setarile utilizatorului%
     "NoHTMLWallPaper"=dword:%setarile utilizatorului%
   Noua valoare:
   • "NoChangingWallpaper"=dword:00000000
     "NoComponents"=dword:00000000
     "NoAddingComponents"=dword:00000000
     "NoDeletingComponents"=dword:00000000
     "NoEditingComponents"=dword:00000000
     "NoHTMLWallPaper"=dword:00000000

 Detaliile fisierului Limbaj de programare:
 Limbaj de programare folosit: C (compilat cu Microsoft Visual C++).

Description insérée par Iulia Diaconescu le mardi 1 novembre 2005
Description mise à jour par Iulia Diaconescu le lundi 12 décembre 2005

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