Virus:TR/FakeAV.fmi
Date discovered:30/07/2010
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:2.752.512 Bytes
MD5 checksum:99e2e3c8c2aeb5fe8a572d5a0B45571f
IVDF version:7.10.09.88 - Wednesday, July 14, 2010

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Symantec: Trojan.FakeAV!gen32
   •  Kaspersky: Packed.Win32.Katusha.o
   •  Sophos: Mal/FakeAV-BW
   •  Microsoft: Trojan:Win32/FakeVimes
   •  Panda: Adware/SecurityMasterAV
   •  PCTools: Trojan.FakeAV
   •  Eset: Win32/Kryptik.FMZ
   •  AhnLab: Win-Trojan/Fakeav.2752512


Platforms / OS:
   • Windows 98
   • Windows 98 SE
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows Server 2008
   • Windows 7
   • Drops files
   • Drops malicious files


Right after execution the following information is displayed:


 Files It copies itself to the following locations:
   • c:\%current directory%\SecurityMasterAV.bin
   • %ALLUSERSPROFILE%\Application Data\%randomly chosen directory%\%random character string%.exe



It modifies the following file:
   • %WINDIR%\systems32\drivers\etc\hosts



It deletes the initially executed copy of itself.



The following files are created:

– %HOME%\Recent\%random character string%.dll
– %HOME%\Recent\%random character string%.drv
– %HOME%\Recent\%random character string%.tmp
– %ALLUSERSPROFILE%\Application Data\%randomly chosen directory%\SMAV.ico
– %APPDATA%\Security Master AV\Instructions.ini
– %APPDATA%\Security Master AV\winupdate.exe
– C:\%current directory%\%random character string%.mof
– C:\%current directory%\SMAVSys\%random character string%.bd
– %ALLUSERSPROFILE%\Application Data\%randomly chosen directory%\%random character string%.cfg

 Registry One of the following values is added in order to run the process after reboot:

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Security Master AV"="\"%ALLUSERSPROFILE%\Application Data\%randomly chosen directory%\%random character string%.exe\" /s /d"



The following registry keys are added:

– [HKCU\Software\Microsoft\Internet Explorer]
   • "IIL"=dword:00000000
   • "ltHI"=dword:00000000
   • "ltTST"=dword:00008e02

– [HKCU\Software\Microsoft\Internet Explorer\BrowserEmulation]
   • "MSCompatibilityMode"=dword:00000000

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\a.exe]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\aAvgApi.exe]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\AAWTray.exe]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\adaware.exe]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\avmailc.exe]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\belt.exe]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\cfinet.exe]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\dcomx.exe]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\ent.exe]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\fch32.exe]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\fullsoft.dll]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\hbinst.exe]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\htmlmm.ocx]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\icmon.exe]
   • "Debugger"="svchost.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
   Image File Execution Options\keenvalue.exe]
   • "Debugger"="svchost.exe"

– [HKCU\Software\3]
– [HKCR\SecurityMasterAV.DocHostUIHandler\Clsid]
   • @="{3F2BBC05-40DF-11D2-9455-00104BC936FF}"

– [HKCR\CLSID\{3F2BBC05-40DF-11D2-9455-00104BC936FF}]
   • @="Implements DocHostUIHandler"

– [HKCR\CLSID\{3F2BBC05-40DF-11D2-9455-00104BC936FF}\LocalServer32]
   • @="c:\\xxx\\SecurityMasterAV.exe"

– [HKCR\CLSID\{3F2BBC05-40DF-11D2-9455-00104BC936FF}\ProgID]
   • @="SecurityMasterAV.DocHostUIHandler"

– [HKCR\SecurityMasterAV.DocHostUIHandler]
   • @="Implements DocHostUIHandler"

– [HKCU\Software\Microsoft\Internet Explorer\SearchScopes]
   • "URL"="http://findgala.com/?&uid=2129&q={searchTerms}"



The following registry keys are changed:

– [HKCU\Software\Microsoft\Internet Explorer\Download]
   Old value:
   • "CheckExeSignatures"="yes"
   • "RunInvalidSignatures"=dword:00000000
   New value:
   • "CheckExeSignatures"="no"
   • "RunInvalidSignatures"=dword:00000001

 Hosts The host file is modified as explained:

– In this case already existing entries remain unmodified.

– Access to the following domains are redirected to other destinations:
   • 74.125.45.100 4-open-davinci.com
   • 74.125.45.100 securitysoftwarepayments.com
   • 74.125.45.100 privatesecuredpayments.com
   • 74.125.45.100 secure.privatesecuredpayments.com
   • 74.125.45.100 getantivirusplusnow.com
   • 74.125.45.100 secure-plus-payments.com
   • 74.125.45.100 www.getantivirusplusnow.com
   • 74.125.45.100 www.secure-plus-payments.com
   • 74.125.45.100 www.getavplusnow.com
   • 74.125.45.100 safebrowsing-cache.google.com
   • 74.125.45.100 urs.microsoft.com
   • 74.125.45.100 www.securesoftwarebill.com
   • 74.125.45.100 secure.paysecuresystem.com
   • 74.125.45.100 paysoftbillsolution.com
   • 74.125.45.100 protected.maxisoftwaremart.com


 File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Carlos Valero Llabata on Friday, August 6, 2010
Description updated by Carlos Valero Llabata on Friday, August 6, 2010

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