high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
|
| Included in our products from | November 2005 (3.99) |
| Protection available since | 5 January 2005 13:02:01 (GMT) |
| Last updated | 22 September 2005 07:53:18 (GMT) |
| Detected by | All Sophos products |
Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
Check your administrator passwords and review network security.
You will also need to edit the following registry entries, if they are present. Please read the warning about editing the registry.
At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.
Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export range' panel, click 'All', then save your registry as Backup.
Locate the HKEY_LOCAL_MACHINE entries:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
and remove any reference to any file you deleted.
Each user has a registry area named HKEY_USERS\[code number indicating user]\. For each user locate the entry:
HKU\[code number]\Software\Microsoft\Windows\
CurrentVersion\Run\
and remove any reference to any file you deleted.
Close the registry editor.
More Information
W32/Sdbot-SY is a worm that attempts to spread via remote network shares. The worm tries to access various network computers with shared folders using weak passwords.
W32/Sdbot-SY contains backdoor functions that allow unauthorised remote access to the infected computer via IRC channels while running in the background.
When run the worm copies itself to the Windows system folder as CVDAsDW.exe.
W32/Sdbot-SY also creates the following registry entries so that it is able to run on computer logon:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
XPSoft
CVDAsDW.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\Run
XPSoft
CVDAsDW.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
XPSoft
CVDAsDW.exe
Once installed, W32/Sdbot-SY will attempt to download and run files from the internet when instructed to do so by a remote attacker.
Sophos's anti-virus products include proactive protection technology, which can defend against new threats without requiring an update. Sophos customers have been protected against W32/Sdbot-SY (detected as W32/Sdbot-Fam) since version 3.89.
|
