high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
|
| Protection available since | 27 May 2005 08:44:05 (GMT) |
| Detected by | All Sophos products |
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Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
Change any data that may have become compromised.
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-YR is a worm and IRC backdoor Trojan for the Windows platform which allows a remote intruder to gain access and control over the computer via IRC channels.
W32/Sdbot-YR spreads to other network computers infected with Troj/Kuang, Troj/Sub7, Troj/NetDevil and W32/MyDoom and by copying itself to network shares protected by weak passwords.
W32/Sdbot-YR includes functionality to:
- steal confidential information
- carry out DDoS flooder attacks
- silently download, install and run new software
- change security settings
When first run W32/Sdbot-YR copies itself to <System>\svhost.exe and creates the file <System>\ntfsdi.dll. ntfsdi.dll is a non-malicious file and may be deleted.
The following registry entries are created to run SVHOST.EXE on startup:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run
Microsoft Synchronization Manager
svhost.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
Microsoft Synchronization Manager
svhost.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Microsoft Synchronization Manager
svhost.exe
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