Nume:TR/PSW.Onlineg.ALZR
Descoperit pe data de:05/03/2009
Tip:Troian
ITW:Da
Numar infectii raportate:Mediu
Potential de raspandire:Mediu
Potential de distrugere:Mediu
Fisier static:Da
Marime:168.420 Bytes
MD5:42438a0F0D9501bf1370287ff4b451bd
Versiune IVDF:7.01.02.122 - quinta-feira, 5 de março de 2009

 General Alias:
   •  Symantec: Infostealer.Gampass
   •  Mcafee: Generic PWS.ak trojan !!!
   •  Kaspersky: Trojan.Win32.Agent2.eij
   •  Sophos: Mal/EncPk-HI
   •  Panda: W32/Lineage.KYR
   •  Eset: Win32/PSW.OnLineGames.NMY
   •  Bitdefender: Trojan.PWS.OnLineGames.KCND


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


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

 Fisiere Se copiaza in urmatoarele locatii:
   • %unitate disc%\d8k6hg.com
   • %SYSDIR%\kva8wr.exe



Suprascrie un fisier.
– %SYSDIR%\drivers\cdaudio.sys



Sterge copia initiala a virusului.



Sterge urmatorul fisier:
   • %SYSDIR%\drivers\cdaudio.sys



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%

– %unitate disc%\gjnfah.cmd (176444) Analiza ulterioara a relevat ca si acest fisier este malware. Detectat ca: TR/Crypt.ZPACK.Gen

– %SYSDIR%\ahnsbsb.exe (176444) Detectat ca: TR/Crypt.ZPACK.Gen

– %SYSDIR%\bgotrtu0.dll (73728) Detectat ca: TR/PSW.OnLin.ALZR.1

– %SYSDIR%\ahnfgss0.dll (88576) Detectat ca: TR/Crypt.ZPACK.Gen

– %SYSDIR%\uweyiwe0.dll (97280) Detectat ca: TR/Crypt.XPACK.Gen

– %SYSDIR%\ahnxsds0.dll (81920) Detectat ca: TR/Crypt.ZPACK.Gen




Incearca sa descarce cateva fisiere:

– Adresa este urmatoarea:
   • http://yklop.com/xhg2/**********
Analiza ulterioara a relevat ca si acest fisier este malware.

– Adresa este urmatoarea:
   • http://kioytrfd.com/xhg2/**********

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

– [HKLM\SYSTEM\CurrentControlSet\Services\AVPsys]
   • "Start"=dword:0x3
   • "Type"=dword:0x1
   • "ImagePath"="\??\%SYSDIR%\drivers\cdaudio.sys"
   • "DisplayName"="AVPsys"
   • "ErrorControl"=dword:0x1



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

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



Inregistreaza un browser helper object (BHO) prin adaugarea urmatoarelor chei in registri:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\
   Browser Helper Objects\{238C32AB-955D-4707-AAB9-C9B3AB8D4225}]
– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\
   Browser Helper Objects\{F171A450-7AF5-43E1-AFED-EDC826A1B0F5}]


Urmatoarele chei sunt adaugate in registrii sistemului:

– [HKLM\SOFTWARE\Classes\CLSID\MNDOWN]
   • "urlinfo"="m1chgt.e"

– [HKLM\SOFTWARE\Classes\CLSID\
   {238C32AB-955D-4707-AAB9-C9B3AB8D4225}]
   • "(default)"="IEHlprObj Class"

– [HKLM\SOFTWARE\Classes\CLSID\{238C32AB-955D-4707-AAB9-C9B3AB8D4225}\
   InprocServer32]
   • "ThreadingModel"="Apartment"
   • "(default)"="%SYSDIR%\ahnxsds0.dll"

– [HKLM\SOFTWARE\Classes\CLSID\{238C32AB-955D-4707-AAB9-C9B3AB8D4225}\
   ProgID]
   • "(default)"="IEHlprObj.IEHlprObj.1"

– [HKLM\SOFTWARE\Classes\Interface\
   {238C32AC-955D-4707-AAB9-C9B3AB8D4225}]
   • @="IIEHlprObj"

– [HKLM\SOFTWARE\Classes\Interface\
   {238C32AC-955D-4707-AAB9-C9B3AB8D4225}\ProxyStubClsid]
   • @="{00020424-0000-0000-C000-000000000046}"

– [HKLM\SOFTWARE\Classes\Interface\
   {238C32AC-955D-4707-AAB9-C9B3AB8D4225}\ProxyStubClsid32]
   • @="{00020424-0000-0000-C000-000000000046}"

– [HKLM\SOFTWARE\Classes\Interface\
   {238C32AC-955D-4707-AAB9-C9B3AB8D4225}\TypeLib]
   • "Version"="1.0"
   • @="{238C32A2-955D-4707-AAB9-C9B3AB8D4225}"

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

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

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

– [HKLM\SOFTWARE\Classes\Interface\
   {238C32AC-955D-4707-AAB9-C9B3AB8D4225}\TypeLib]
   • Version"="1.0"
   • @="{238C32A2-955D-4707-AAB9-C9B3AB8D4225}"

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

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

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

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

– [HKLM\SOFTWARE\Classes\TypeLib\
   {238C32A2-955D-4707-AAB9-C9B3AB8D4225}\1.0]
   • @="IEHelper 1.0 Type Library"

– [HKLM\SOFTWARE\Classes\TypeLib\
   {238C32A2-955D-4707-AAB9-C9B3AB8D4225}\1.0\0\win32]
   • @="%SYSDIR%\ahnxsds0.dll"

– [HKLM\SOFTWARE\Classes\TypeLib\
   {238C32A2-955D-4707-AAB9-C9B3AB8D4225}\1.0\FLAGS]
   • @="0"

– [HKLM\SOFTWARE\Classes\TypeLib\
   {238C32A2-955D-4707-AAB9-C9B3AB8D4225}\1.0\HELPDIR]
   • @="%SYSDIR%\"

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

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

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

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



Urmatoarele chei din registri sunt modificate:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\
   Folder\Hidden\SHOWALL]
   Noua valoare:
   • "CheckedValue"=dword:0x0

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   Noua valoare:
   • "Hidden"=dword:0x2
   • "ShowSuperHidden"=dword:0x0

 Injectarea codului malware in alte procese –  Injecteaza fisierul urmator intr-un proces: %SYSDIR%\ahnfgss0.dll

    Numele procesului:
   • %toate procesele active%


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

Descrição enviada por Petre Galan em segunda-feira, 19 de outubro de 2009
Descrição atualizada por Petre Galan em segunda-feira, 19 de outubro de 2009

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