Nume:Worm/SdBot.akv
Descoperit pe data de:17/11/2005
Tip:Vierme
ITW:Nu
Numar infectii raportate:Scazut
Potential de raspandire:Mediu
Potential de distrugere:Mediu
Fisier static:Da
Marime:76.800 Bytes
MD5:e4c3dcd460c2e4c898c65a59161c2d80
Versiune VDF:6.36.01.45
Versiune IVDF:6.36.01.48 - Freitag, 17. November 2006

 General Metoda de raspandire:
   • Reteaua locala


Alias:
   •  Kaspersky: Backdoor.Win32.SdBot.avd
   •  TrendMicro: WORM_SDBOT.ALQ
   •  Sophos: W32/Tilebot-HH

Initial identificat ca:
   •  TR/Packed.CryptExe


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


Efecte secundare:
   • Modificari in registri
   • Profita de vulnerabilitatile softului
   • Posibilitatea accesului neautorizat la computer

 Fisiere Se copiaza in urmatoarea locatie:
   • %SYSDIR%\lsyss.exe



Sterge copia initiala a virusului.

 Registrii sistemului Urmatoarele chei sunt adaugate in registri pentru a incarca serviciul la repornirea sistemului:

– HKLM\SYSTEM\CurrentControlSet\Services\Windows Reg Service
   • "Type"=dword:00000110
   • "Start"=dword:00000002
   • "ErrorControl"=dword:00000000
   • "ImagePath"="%SYSDIR%\lsyss.exe"
   • "DisplayName"="Windows Reg Service"
   • "ObjectName"="LocalSystem"
   • "FailureActions"=%hex value%
   • "Description"="Windows Reg Service"



Valorile urmatoarelor chei sunt sterse din registrii sistemului:

–  HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions
   • "jda30"=%fisier executat%

–  HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\
   ProxyEnable
–  HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\
   ProxyServer
–  HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\
   ProxyOverride
–  HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\
   AutoConfigURL


Urmatoarele chei sunt adaugate in registrii sistemului:

– HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions
   • "jda30"=%fisier executat%

– HKLM\SYSTEM\CurrentControlSet\Services\Windows Reg Service\Security
   • "Security"=%hex value%

– HKLM\SYSTEM\CurrentControlSet\Services\Windows Reg Service\Enum
   • "0"="Root\\LEGACY_WINDOWS_REG_SERVICE\\0000"
   • "Count"=dword:00000001
   • "NextInstance"=dword:00000001

– HKLM\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_WINDOWS_REG_SERVICE
   • "NextInstance"=dword:00000001

– HKLM\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_WINDOWS_REG_SERVICE\
   0000
   • "Service"="Windows Reg Service"
   • "Legacy"=dword:00000001
   • "ConfigFlags"=dword:00000000
   • "Class"="LegacyDriver"
   • "ClassGUID"="{8ECC055D-047F-11D1-A537-0000F8753ED1}"
   • "DeviceDesc"="Windows Reg Service"

– HKLM\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_WINDOWS_REG_SERVICE\
   0000\Control
   • "*NewlyCreated*"=dword:00000000
   • "ActiveService"="Windows Reg Service"

– HKLM\SOFTWARE\Microsoft\Security Center
   • "UpdatesDisableNotify"=dword:00000001
   • "AntiVirusDisableNotify"=dword:00000001
   • "FirewallDisableNotify"=dword:00000001
   • "AntiVirusOverride"=dword:00000001
   • "FirewallOverride"=dword:00000001

– HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile
   • "EnableFirewall"=dword:00000000

– HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile
   • "EnableFirewall"=dword:00000000

– HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\
   Auto Update
   • "AUOptions"=dword:00000001

– HKLM\SYSTEM\CurrentControlSet\Services\wscsvc
   • "Start"=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters
   • "AutoShareWks"=dword:00000000
   • "AutoShareServer"=dword:00000000

– HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate
   • "DoNotAllowXPSP2"=dword:00000001

– HKLM\SYSTEM\CurrentControlSet\Services\TlntSvr
   • "Start"=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\RemoteRegistry
   • "Start"=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\Messenger
   • "Start"=dword:00000004



Urmatoarele chei din registri sunt modificate:

– HKLM\SYSTEM\CurrentControlSet\Control
   Vechea valoare:
   • "WaitToKillServiceTimeout"="2000"
   Noua valoare:
   • "WaitToKillServiceTimeout"="7000"

– HKLM\SYSTEM\CurrentControlSet\Control\Lsa
   Vechea valoare:
   • "restrictanonymous"=dword:00000000
   Noua valoare:
   • "restrictanonymous"=dword:00000001

– HKLM\SOFTWARE\Microsoft\Ole
   Vechea valoare:
   • "EnableDCOM"="Y"
   Noua valoare:
   • "EnableDCOM"="N"

 Reţea Exploit:
Foloseste urmatoarele vulnerabilitati:
– MS03-026 (Buffer Overrun in RPC Interface)
– MS03-039 (Buffer Overrun in RPCSS Service)
– MS04-007 (ASN.1 Vulnerability)
– MS04-011 (LSASS Vulnerability)
– MS05-039 (Vulnerability in Plug and Play)


Procesul de infectare:
Se creeaza un script FTP in sistemul afectat, pentru a descarcaun malware pe alt computer controlat la distanta.


Activare de la distanta:
–Incearca sa activeze de la distanta malware-ul pe sistemul recent infectat. Pentru aceasta, apeleaza functia NetScheduleJobAdd.

 IRC Pentru a trimite informatii si pentru a fi controlat se conecteaza la serverul IRC:

Server: x.realdot**********
Port: 8080
Parola serverului: master
Canal: #4.
Nick: [P00|USA|%sir de 5 caractere aleatoare%]
Parola: .....



– Acest malware poate obtine si trimite infomatii cum ar fi:
    • Timpul de cand malware-ul a fost lansat in executie
    • Informatii despre retea
    • Informatii despre procesele sistemului
    • Informatii despre sistemul de operare


– In plus, poate efectua urmatoarele operatii:
    • dezactivarea partajarii de resurse in retea
    • descarcare fisier
    • editare registru sistem
    • activarea partajarii de resurse in retea
    • terminare proces
    • deschidere consola
    • Scaneaza reteaua
    • oprierea sistemului
    • terminare proces malware

 Terminarea proceselor Lista cu procesele oprite:
   • i11r54n4.exe; rate.exe; winsys.exe; irun4.exe; bbeagle.exe;
      d3dupdate.exe; teekids.exe; Penis32.exe; MSBLAST.exe;
      PandaAVEngine.exe; mscvb32.exe; ssate.exe; sysinfo.exe


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

Die Beschreibung wurde erstellt von Bogdan Iliuta am Freitag, 17. November 2006
Die Beschreibung wurde geändert von Bogdan Iliuta am Montag, 20. November 2006

zurück . . . .