high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
|
| Protection available since | 31 May 2005 20:59:18 (GMT) |
| Last updated | 18 June 2005 15:51:06 (GMT) |
| Detected by | All Sophos products |
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Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
Windows NT/2000/XP/2003
In Windows NT/2000/XP/2003 you will also need to edit the following registry entries. The removal of these entries is optional in Windows 95/98/Me. 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 entry:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
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-YW is a worm with IRC backdoor functionality for the Windows platform.
W32/Sdbot-YW allows unauthorised remote access to the infected computer via the IRC network. The worm joins a preconfigured IRC channel and waits for instructions from a remote intruder. The worm can be instructed to download updates and run arbitrary files, participate in DDoS attacks and spread to remote network shares. W32/Sdbot-YW is a worm and IRC backdoor Trojan for the Windows platform.
W32/Sdbot-YW allows unauthorized remote access to the infected computer via the IRC network. The worm joins a preconfigured IRC channel and waits for instructions from a remote intruder. The worm can be instructed to download updates and run arbitrary files, participate in DDoS attacks and spread to remote network shares.
When first run the worm copies itself to <SYSTEM>\hmusvc32.exe or <SYSTEM>\hmvsvc32.exe.
The following registry entries are created to run W32/Sdbot-YW on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
HMV PowerSource
<worm filename>
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HMV PowerSource
<worm filename>
where <worm filename> is either hmusvc32.exe or hmvsvc32.exe
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