high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
|
| Included in our products from | March 2005 (3.91) |
| Protection available since | 3 February 2005 14:25:06 (GMT) |
| Detected by | All Sophos products |
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.
Close the registry editor.
More Information
W32/Rbot-VH is a network worm with IRC backdoor Trojan functionality for the Windows platform.
Once executed W32/Rbot-VH copies itself to the Windows system folder with the filename winhost.exe, and in order to be able to run automatically when Windows starts up sets the registry entries:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
win32
"winhost.exe"
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
win32
"winhost.exe"
W32/Rbot-VH also sets the following registry entry:
HKCU\Software\Microsoft\OLE\
win32
"winhost.exe"
W32/Rbot-VH spreads using a variety of techniques including exploiting weak passwords on computers and SQL servers, exploiting operating system vulnerabilities (including DCOM-RPC, LSASS, WebDAV and UPNP) and using backdoors opened by other worms or Trojans.
W32/Rbot-VH can be controlled by a remote attacker over IRC channels. The backdoor component of W32/Rbot-VH can be instructed by a remote user to perform the following functions:
start an FTP server
start a Proxy server
start a web server
take part in distributed denial of service (DDoS) attacks
log keypresses
capture screen/webcam images
packet sniffing
port scanning
download/execute arbitrary files
start a remote shell (RLOGIN)
steal product registration information from certain software
Patches for the operating system vulnerabilities exploited by W32/Rbot-VH can be obtained from Microsoft at:
http://www.microsoft.com/technet/security/bulletin/ms04-012.mspx
http://www.microsoft.com/technet/security/bulletin/ms03-039.mspx
http://www.microsoft.com/technet/security/bulletin/ms03-007.mspx
http://www.microsoft.com/technet/security/bulletin/ms01-059.mspx
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