high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
|
| Included in our products from | August 2005 (3.96) |
| Protection available since | 5 July 2005 21:18:29 (GMT) |
| Detected by | All Sophos products |
Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
More Information
W32/Sdbot-AAC is a worm with backdoor functionality for the Windows platform.
W32/Sdbot-AAC 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-AAC copies itself to <Windows system folder>\xpspz.exe and also creates msdirectx.sys.
The file msdirectx.sys is detected as Troj/NtRootK-F.
The following registry entries are created to run xpspz.exe on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Windows-XP-Service-Pack
xpspz.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Windows-XP-Service-Pack
xpspz.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\RunServices
Windows-XP-Service-Pack
xpspz.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Windows-XP-Service-Pack
xpspz.exe
W32/Sdbot-AAC might try to terminate Anti-Virus applications and block access to security related web-sites.
W32/Sdbot-AAC sets the following registry entries, disabling the automatic startup of other software:
HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess
Start
4
HKLM\SYSTEM\CurrentControlSet\Services\wuauserv
Start
4
Registry entries are set as follows:
HKCU\SYSTEM\CurrentControlSet\Control\Lsa
Windows-XP-Service-Pack
xpspz.exe
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
Windows-XP-Service-Pack
xpspz.exe
HKCU\Software\Microsoft\OLE
Windows-XP-Service-Pack
xpspz.exe
HKLM\SOFTWARE\Microsoft\Ole
Windows-XP-Service-Pack
xpspz.exe
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1
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