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Virus:TR/Fake.Rean.1990
Date discovered:19/05/2011
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:335.872 Bytes
MD5 checksum:43B180A31F429FEF227317D8ACDD764B
VDF version:7.11.08.62 - Thursday, May 19, 2011
IVDF version:7.11.08.62 - Thursday, May 19, 2011

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  TrendMicro: TROJ_GEN.F43EZF2
   •  Sophos: Mal/FakeAV-JR
   •  Microsoft: Rogue:Win32/FakeRean


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows 7


Side effects:
   • Blocks access to security websites
   • Drops files
   • Lowers security settings
   • Registry modification


Right after execution the following information is displayed:




 Files It copies itself to the following location:
   • %HOME%\Local Settings\Application Data\%random character string%.exe



It deletes the initially executed copy of itself.



The following files are created:

%TEMPDIR%\yhbg3tg3h3g4h14025p2238o573nc128353y14f7
– %ALLUSERSPROFILE%\Application Data\yhbg3tg3h3g4h14025p2238o573nc128353y14f7
– %HOME%\Local Settings\Application Data\yhbg3tg3h3g4h14025p2238o573nc128353y14f7
%TEMPDIR%\yhbg3tg3h3g4h14025p2238o573nc128353y14f7
– %HOME%\Templates\yhbg3tg3h3g4h14025p2238o573nc128353y14f7

 Registry The following registry keys are added:

– [HKLM\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\
   FirewallPolicy\StandardProfile]
   • "DoNotAllowExceptions"=dword:00000000
   • "EnableFirewall"=dword:00000000
   • "DisableNotifications"=dword:00000001

– [HKLM\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\
   FirewallPolicy\DomainProfile]
   • "EnableFirewall"=dword:00000000
   • "DoNotAllowExceptions"=dword:00000000
   • "DisableNotifications"=dword:00000001

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

– [HKCR\.exe\shell\open\command]
   • "(Default)"="\"%HOME%\Local Settings\Application Data\\%random character string%.exe\" -a \"%1\" %*"
   • "IsolatedCommand"="\"%1\" %*"

– [HKCR\exefile\shell\open\command]
   • "(Default)"="\"%HOME%\Local Settings\Application Data\\%random character string%.exe\" -a \"%1\" %*"
   • "IsolatedCommand"="\"%1\" %*"

– [HKCR\exefile\shell\runas\command]
   • "(Default)"="\"%1\" %*"
   • "IsolatedCommand"="\"%1\" %*"

– [HKLM\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\
   command]
   • "(Default)"="\"%HOME%\Local Settings\Application Data\\%random character string%.exe\" -a \"%PROGRAM FILES%\Intern"



The following registry key is changed:

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

 Injection – It injects itself as a remote thread into a process.

    Process name:
   • iexplore.exe


 Miscellaneous Accesses internet resources:
   • **********ifyzadiby.com/1015001512;
      **********upinycom.com/1015001512;
      **********ecolun.com/1015001512;
      **********epelihyzex.com/1015001512;
      **********eriwihat.com/1015001512;
      **********idicawisos.com/1015001512;
      **********ipabamefuw.com/1015001512;
      **********ucerybaqecy.com/1015001512;
      **********ylocimemyja.com/1015001512;
      **********oralipijago.com/1015001512;
      **********ykacagatet.com/1015001512;
      **********ipemura.com/1015001512;
      **********ulipum.com/1015001512;
      **********awekugygil.com/1015001512;
      **********ujykolenuja.com/1015001512

說明撰寫者 Andrei Ilie 開啟 2011年8月11日星期四
說明更新者 Andrei Ilie 開啟 2011年8月11日星期四

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