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Windows 7: TDL4 bootkit reinstates 64-bit infection capability

02 May 2011   #1
malexous

Arch Linux 64-bit
 
 
TDL4 bootkit reinstates 64-bit infection capability

Quote:
Microsoft released security update KB2506014 on April 12 to address a vulnerability which allowed unsigned drivers to be loaded by 64-bit Windows. The TDSS/Alureon rootkit family, where TDL4 is a part of, was one of the more advanced rootkits that abused this vulnerability to load the rootkit during Windows boot up. TDL4 is also known as the Google Redirect Virus.
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TDL4 bootkit reinstates 64-bit infection capability


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02 May 2011   #2
niemiro

Vista Home Premium x86 SP2
 
 

For a greater technical depth of the new TDL4, see here: TDL4 rootkit is coming back stronger than before
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08 May 2011   #3
Xhi

Windows 7 Ultimate 64-bit / Ubuntu Linux 11.04
 
 

Ugh... TDSS/Alureon, I hate this rootkit. It's the most common issue with computers in the office. So hard to detect and remove, and now they come up with a newer version.
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08 May 2011   #4
yowanvista

Windows 8.1 Pro x64
 
 

Its not actually a vulnerability, 64-bit versions of Windows do allow unsigned drivers to be loaded through a special command 'bcdedit /set loadoptions DDISABLE_INTEGRITY_CHECKS'
Code:
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows NT\Driver Signing]
Value Name: BehaviorOnFailedVerify
Data Type: REG_DWORD (DWORD Value)
Value Data: (0 = Ignore, 1 = Warn, 2 = Block)  HKCU\Software\Policies\Microsoft\Windows NT\Driver Signing" /v BehaviorOnFailedVerify /t reg_dword /d 00000000 /f
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 TDL4 bootkit reinstates 64-bit infection capability




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