W32/Sdbot-CWB is a worm with IRC backdoor functionality for the Windows platform.
W32/Sdbot-CWB 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-CWB copies itself to (system)\run32dll.exe. W32/Sdbot-CWB sets the following registry entries to run at system startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
run32
run32dll.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
run32
run32dll.exe
HKCU\Software\Microsoft\OLE
run32
run32dll.exe
The following Registry entries are also set:
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1