high
Summary
Summary
Action- More Information
| Affected operating systems | Windows |
|---|---|
| Characteristics |
|
| Included in our products from | October 2005 (3.98) |
| Protection available since | 23 August 2005 21:51:25 (GMT) |
| Detected by | All Sophos products |
Action
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Please follow the instructions for removing worms.
More Information
W32/Tilebot-M is a worm and IRC backdoor Trojan for the Windows platform.
W32/Tilebot-M spreads to other network computers by exploiting common buffer overflow vulnerabilities, including PNP (MS05-039).
W32/Tilebot-M runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels.
W32/Tilebot-M includes functionality to access the internet and communicate with a remote server via HTTP.
W32/Tilebot-M drops a file detected as Troj/Rootkit-W.
The following patch for the operating system vulnerability exploited by W32/Tilebot-M can be obtained from the Microsoft website:
MS05-039 W32/Tilebot-M is a worm and IRC backdoor Trojan for the Windows platform.
W32/Tilebot-M spreads to other network computers by exploiting common buffer overflow vulnerabilities, including PNP (MS05-039).
W32/Tilebot-M runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels.
W32/Tilebot-M includes functionality to access the internet and communicate with a remote server via HTTP.
When first run W32/Tilebot-M copies itself to <Windows folder>\msdnupdate32 and creates the file <Windows system folder>\rdriv.sys.
The file rdriv.sys is detected as Troj/Rootkit-W.
The file rdriv.sys is registered as a new system driver service named "rdriv", with a display name of "rdriv". Registry entries are created under:
HKLM\SYSTEM\CurrentControlSet\Services\rdriv\
The file msdnupdate32 is registered as a new system driver service named "msdnupdate32", with a display name of "Msdn Update 32" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:
HKLM\SYSTEM\CurrentControlSet\Services\msdnupdate32\
W32/Tilebot-M sets the following registry entries, disabling the automatic startup of other software:
HKLM\SYSTEM\CurrentControlSet\Services\Messenger
Start
4
HKLM\SYSTEM\CurrentControlSet\Services\RemoteRegistry
Start
4
HKLM\SYSTEM\CurrentControlSet\Services\TlntSvr
Start
4
Registry entries are set as follows:
HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate
DoNotAllowXPSP2
1
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1
Registry entries are created under:
HKLM\SOFTWARE\Microsoft\Security Center\
HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile\
HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile\
The following patch for the operating system vulnerability exploited by W32/Tilebot-M can be obtained from the Microsoft website:
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