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Virus:Worm/AutoIt.BEK
Date discovered:29/10/2008
Type:Worm
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:387.584 Bytes
MD5 checksum:c718e513f104913699362bd588364363
IVDF version:7.01.00.09 - Wednesday, October 29, 2008

 General Method of propagation:
   • Autorun feature


Aliases:
   •  Mcafee: W32/YahLover.worm.gen virus
   •  Sophos: Mal/Generic-A
   •  Panda: W32/Autorun.IOI
   •  Eset: Win32/AutoRun.WJ
   •  Bitdefender: Trojan.Generic.326271


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


Side effects:
   • Drops malicious files
   • Lowers security settings
   • Registry modification

 Files It copies itself to the following locations:
   • %drive%\logoneui.exe
   • %WINDIR%\web\connection.dat
   • %SYSDIR%\logoneui.exe
   • %drive%\Jojo.exe
   • %drive%\Zidan vs Tito.exe
   • %drive%\Maradona.exe
   • %drive%\%all directories%\%directory name%.exe



It deletes the following file:
   • C:\boot.ini



The following files are created:

%drive%\autorun.inf This is a non malicious text file with the following content:
   • %code that runs malware%

%WINDIR%\Tasks\At1.job
%drive%\info.bat
%SYSDIR%\autorun.ini
%SYSDIR%\boote\boot.ini

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

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "firewall 2008"="%SYSDIR%\logoneui.exe"



The following registry keys are added:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System]
   • "DisableRegistryTools"=dword:0x00000001
   • "DisableTaskMgr"=dword:0x00000001

– [HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel]
   • "HomePage"="1"



The following registry keys are changed:

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   New value:
   • "Shell"="Explorer.exe logoneui.exe"

– [HKCU\Software\Microsoft\Internet Explorer\Main]
   New value:
   • "Start Page"="http://famous2.topcities.com"

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   New value:
   • "Hidden"=dword:0x00000000

– [HKLM\SYSTEM\CurrentControlSet\Services\Schedule]
   New value:
   • "AtTaskMaxHours"=dword:0x00000000
   • "NextAtJobId"=dword:0x00000002

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
   New value:
   • "NofolderOptions"=dword:0x00000001

 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 Petre Galan on Friday, March 5, 2010
Description updated by Petre Galan on Friday, March 5, 2010

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