W32/Tilebot-HN is a worm for the Windows platform.
W32/Tilebot-HN spreads to other network computers by exploiting common buffer overflow vulnerabilities, including: LSASS (MS04-011), RPC-DCOM (MS04-012), PNP (MS05-039) and ASN.1 (MS04-007). The worm may also spreads via network shares protected by weak passwords.
W32/Tilebot-HN 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-HN includes functionality to:
- set up an FTP server
- set up a proxy server
- spread via AOL Instant Messager by sending messages automatically
- set or remove network shares
- port scanning
- packet sniffing
- start a remote shell (RLOGIN)
- access the internet and communicate with a remote server via HTTP
- harvest information from clipboard
- take part in Distributed Denial of Service (DDoS) attacks
W32/Tilebot-HN is a worm for the Windows platform.
W32/Tilebot-HN spreads to other network computers by exploiting common buffer overflow vulnerabilities, including: LSASS (MS04-011), RPC-DCOM (MS04-012), PNP (MS05-039) and ASN.1 (MS04-007). The worm may also spreads via network shares protected by weak passwords.
W32/Tilebot-HN 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-HN includes functionality to:
- set up an FTP server
- set up a proxy server
- spread via AOL Instant Messager by sending messages automatically
- set or remove network shares
- port scanning
- packet sniffing
- start a remote shell (RLOGIN)
- access the internet and communicate with a remote server via HTTP
- harvest information from clipboard
- take part in Distributed Denial of Service (DDoS) attacks
When first run W32/Tilebot-HN copies itself to <System>\lsiss.exe.
The file lsiss.exe is registered as a new system driver service named "System Restore Services", with a display name of "System Restore Services" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:
HKLM\SYSTEM\CurrentControlSet\Services\System Restore Services\
W32/Tilebot-HN 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
HKLM\SYSTEM\CurrentControlSet\Services\wscsvc
Start
4
Additional registry entries are set as follows:
HKLM\SOFTWARE\Microsoft\Security Center
AntiVirusDisableNotify
1
HKLM\SOFTWARE\Microsoft\Security Center
AntiVirusOverride
1
HKLM\SOFTWARE\Microsoft\Security Center
FirewallDisableNotify
1
HKLM\SOFTWARE\Microsoft\Security Center
FirewallOverride
1
HKLM\SOFTWARE\Microsoft\Security Center
UpdatesDisableNotify
1
HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate
DoNotAllowXPSP2
1
HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile
EnableFirewall
0
HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile
EnableFirewall
0
HKLM\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters
AutoShareServer
0
HKLM\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters
AutoShareWks
0
HKLM\SYSTEM\CurrentControlSet\Services\lanmanworkstation\parameters
AutoShareServer
0
HKLM\SYSTEM\CurrentControlSet\Services\lanmanworkstation\parameters
AutoShareWks
0
HKLM\SYSTEM\CurrentControlSet\Control\
WaitToKillServiceTimeout
7000
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1