W32/Tilebot-JI

Please follow the instructions for removing worms.

W32/Tilebot-JI is a worm with IRC backdoor functionality for the Windows platform.

W32/Tilebot-JI spreads
 - to computers vulnerable to common exploits, including: LSASS (MS04-011), SRVSVC (MS06-040), RPC-DCOM (MS04-012), PNP (MS05-039), ASN.1 (MS04-007), RealVNC (CVE-2006-2369) and Symantec (SYM06-010)
 - to network shares
 - via AOL Instant Messenger

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

When first run W32/Tilebot-JI copies itself to <System>\msnntlp.exe.

The file msnntlp.exe is registered as a new system driver service named "msnntlp", with a display name of "msnntlp" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:

HKLM\SYSTEM\CurrentControlSet\Services\msnntlp

W32/Tilebot-JI 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\WindowsFirewall\DomainProfile
EnableFirewall
0

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

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

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

Registry entries are created under:

HKLM\SOFTWARE\Microsoft\Security Center