W32/Sdbot-BSL is a worm and IRC backdoor Trojan for the Windows platform.
W32/Sdbot-BSL 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/Sdbot-BSL is a worm and IRC backdoor Trojan for the Windows platform.
W32/Sdbot-BSL 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.
When first run W32/Sdbot-BSL copies itself to <Windows>\Msmgs.exe.
The file Msmgs.exe is registered as a new system driver service named "Windows
web messenger", with a display name of "Windows web messenger" 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 web messenger\
W32/Sdbot-BSL 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\