W32/Sdbot-BPK

Please follow the instructions for removing worms.

W32/Sdbot-BPK is a worm and IRC backdoor Trojan for the Windows platform.

W32/Sdbot-BPK spreads to other network computers by exploiting common buffer overflow vulnerabilities, including: RPC-DCOM (MS04-012), PNP (MS05-039) and ASN.1 (MS04-007) and by copying itself to network shares protected by weak passwords.

W32/Sdbot-BPK 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-BPK copies itself to <Windows>\msconfiguwe.exe.

The following registry entries are created to run msconfiguwe.exe on startup:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Microsoft Configuewe
msconfiguwe.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Microsoft Configuewe
msconfiguwe.exe

HKCU\Software\Microsoft\Windows\CurrentVersion\RunServices
Microsoft Configuewe
msconfiguwe.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Microsoft Configuewe
msconfiguwe.exe

W32/Sdbot-BPK sets the following registry entries, disabling the automatic startup of other software:

HKLM\SYSTEM\CurrentControlSet\Services\wuauserv
Start
4

HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess
Start
4

Note: disabling autostart for the SharedAccess service deactivates the Microsoft Internet Connection Firewall (ICF).

Registry entries are set as follows:

HKCU\SYSTEM\CurrentControlSet\Control\Lsa
Microsoft Configuewe
msconfiguwe.exe

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
Microsoft Configuewe
msconfiguwe.exe

HKCU\Software\Microsoft\OLE
Microsoft Configuewe
msconfiguwe.exe

HKLM\SOFTWARE\Microsoft\Ole
Microsoft Configuewe
msconfiguwe.exe

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1

Registry entries are created under:

HKCR\.key\