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W32/Tilebot-KB

Aliases
  • Backdoor.Win32.SdBot.bhk
  • WORM_SDBOT.FCZ
Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Network shares
  • Peer-to-peer
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 18 July 2007 23:11:47 (GMT)
Detected by All Sophos products
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Action

More Information

W32/Tilebot-KB is a worm for the Windows platform.

W32/Tilebot-KB spreads via network shares and P2P applications.

W32/Tilebot-KB includes functionality to access the internet and communicate to a remote server via HTTP.

W32/Tilebot-KB is a worm for the Windows platform.

W32/Tilebot-KB spreads via network shares and P2P applications.

W32/Tilebot-KB includes functionality to access the internet and communicate to a remote server via HTTP.

When first run W32/Tilebot-KB copies itself to <Windows>\netserv.exe.

W32/Tilebot-KB registers itself as a new system driver service named "Windows .NET Service" with a display name of "Windows .NET Service" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\Windows .NET Service\

W32/Tilebot-KB may replace the contents of these files to render them useless:

<System>\tftp.exe
<System>\ftp.exe

if so a backup of these files may be found here:

<System>\Microsoft\backup.ftp (originally ftp.exe)
<System>\Microsoft\backup.tftp (originally tftp.exe)

W32/Tilebot-KB modifies the number of outbound TCP connections by patching:

<System>\drivers\tcpip.sys

W32/Tilebot-KB sets the following registry entries to reduce system security:

HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate
DoNotAllowXPSP2
1

HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile
EnableFirewall
0

HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile
EnableFirewall
0

HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableTaskMgr
1

HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableRegistryTools
1

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

HKLM\SOFTWARE\Microsoft\Security Center
AntiVirusOverride
1

HKLM\SOFTWARE\Microsoft\Security Center
FirewallOverride
1

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Shell
Explorer.exe <Windows>\netserv.exe

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1

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