Nume:TR/PSW.Onlineg.ALZU
Descoperit pe data de:05/03/2009
Tip:Troian
ITW:Da
Numar infectii raportate:Scazut spre mediu
Potential de raspandire:Scazut spre mediu
Potential de distrugere:Scazut spre mediu
Fisier static:Da
Marime:174.838 Bytes
MD5:3a9bb3c7226be5f9339979590f3fc71a
Versiune IVDF:7.01.02.122 - Thursday, March 5, 2009

 General Metoda de raspandire:
• Functia autorun


Alias:
   •  Mcafee: Generic PWS.ak trojan
   •  Sophos: Mal/EncPk-HI
   •  Panda: W32/Lineage.KYU
   •  Eset: Win32/PSW.OnLineGames.NNU
   •  Bitdefender: Trojan.PWS.OnLineGames.KCNP


Sistem de operare:
   • Windows 2000
   • Windows XP
   • Windows 2003


Efecte secundare:
   • Descarca un fisier malware
   • Creeaza fisiere malware
   • Reduce setarile de securitate
   • Modificari in registri

 Fisiere Se copiaza in urmatoarele locatii:
   • %unitate disc%\rkw2ci.cmd
   • %SYSDIR%\kva8wr.exe



Sterge copia initiala a virusului.



Sunt create fisierele:

– %unitate disc%\autorun.inf Acesta este un fisier text care nu prezinta pericol si are urmatorul continut:
   • %cod care ruleaza fisierul malitios%

– %SYSDIR%\bgotrtu0.dll Analiza ulterioara a relevat ca si acest fisier este malware. Detectat ca: TR/Vundo

– %SYSDIR%\uweyiwe0.dll Analiza ulterioara a relevat ca si acest fisier este malware. Detectat ca: TR/Crypt.XPACK.Gen




Incearca sa descarce un fisier:

– Adresa este urmatoarea:
   • http://cjdha.com/xhg2/**********
La momentul realizarii descrierii, acest fisier nu era disponibil pentru o analiza ulterioara.

 Registrii sistemului Una din urmatoarele valori este adaugata in registri pentru pornirea automata a procesului dupa reboot:

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "kvasoft"="%SYSDIR%\kva8wr.exe"



Urmatoarele chei sunt adaugate in registrii sistemului:

– [HKLM\SOFTWARE\Classes\Interface\
   {F171A44F-7AF5-43E1-AFED-EDC826A1B0F5}\TypeLib]
   • "@"="{F171A442-7AF5-43E1-AFED-EDC826A1B0F5}"
   • "Version"="1.0"

– [HKLM\SOFTWARE\Classes\TypeLib\
   {F171A442-7AF5-43E1-AFED-EDC826A1B0F5}\1.0\HELPDIR]
   • "@"="%SYSDIR%\"

– [HKLM\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1]
   • "@"="IEHlprObj Class"

– [HKLM\SOFTWARE\Classes\TypeLib\
   {F171A442-7AF5-43E1-AFED-EDC826A1B0F5}\1.0]
   • "@"="IEHelper 1.0 Type Library"

– [HKLM\SOFTWARE\Classes\Interface\
   {F171A44F-7AF5-43E1-AFED-EDC826A1B0F5}\ProxyStubClsid]
   • "@"="{00020424-0000-0000-C000-000000000046}"

– [HKLM\SOFTWARE\Classes\TypeLib\
   {F171A442-7AF5-43E1-AFED-EDC826A1B0F5}\1.0\FLAGS]
   • "@"="0"

– [HKLM\SOFTWARE\Classes\Interface\
   {F171A44F-7AF5-43E1-AFED-EDC826A1B0F5}\ProxyStubClsid32]
   • "@"="{00020424-0000-0000-C000-000000000046}"

– [HKLM\SOFTWARE\Classes\CLSID\{F171A450-7AF5-43E1-AFED-EDC826A1B0F5}\
   ProgID]
   • "@"="IEHlprObj.IEHlprObj.1"

– [HKLM\SOFTWARE\Classes\CLSID\
   {F171A450-7AF5-43E1-AFED-EDC826A1B0F5}]
   • "@"="IEHlprObj Class"

– [HKLM\SOFTWARE\Classes\Interface\
   {F171A44F-7AF5-43E1-AFED-EDC826A1B0F5}]
   • "@"="IIEHlprObj"

– [HKLM\SOFTWARE\Classes\CLSID\{F171A450-7AF5-43E1-AFED-EDC826A1B0F5}\
   VersionIndependentProgID]
   • "@"="IEHlprObj.IEHlprObj"

– [HKLM\SOFTWARE\Classes\IEHlprObj.IEHlprObj\CurVer]
   • "@"="IEHlprObj.IEHlprObj.1"

– [HKLM\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID]
   • "@"="{F171A450-7AF5-43E1-AFED-EDC826A1B0F5}"

– [HKLM\SOFTWARE\Classes\IEHlprObj.IEHlprObj]
   • "@"="IEHlprObj Class"

– [HKLM\SOFTWARE\Classes\TypeLib\
   {F171A442-7AF5-43E1-AFED-EDC826A1B0F5}\1.0\0\win32]
   • "@"="%SYSDIR%\bgotrtu0.dll"

– [HKLM\SOFTWARE\Classes\CLSID\{F171A450-7AF5-43E1-AFED-EDC826A1B0F5}\
   InprocServer32]
   • "@"="%SYSDIR%\bgotrtu0.dll"
   • "ThreadingModel"="Apartment"



Urmatoarele chei din registri sunt modificate:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\
   Connections]
   Noua valoare:
   • "DefaultConnectionSettings"=hex:46,00,00,00,04,00,00,00,09,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,04,00,00,00,00,00,00,00,A0,24,72,EF,12,78,CA,01,00,00,00,00,00,00,00,00,00,00,00,00,01,00,00,00,02,00,00,00,C0,A8,6B,64,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   Noua valoare:
   • "Hidden"=dword:0x00000002
   • "ShowSuperHidden"=dword:0x00000000

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\
   Folder\Hidden\SHOWALL]
   Noua valoare:
   • "CheckedValue"=dword:0x00000000

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

Description inserted by Petre Galan on Tuesday, December 8, 2009
Description updated by Petre Galan on Tuesday, December 8, 2009

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