W32/Rbot-QW

Please follow the instructions for removing worms.

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.

Check the following items

• To renable DCOM you can edit the registry, but it's better to use Dcomcnfg.exe. See Microsoft article 825750 for details.
• The HKLM\SYSTEM\CurrentControlSet\Control\Lsa\restrictanonymous = "1" setting does not allow enumeration of SAM accounts and names. The default is "0". It can be changed in Local Security Policy. See Microsoft article 246261 for details.
• Check your administrator passwords and review network security.

W32/Rbot-QW is an IRC backdoor Trojan and network worm.

W32/Rbot-QW may spread to remote network shares protected by weak passwords and computers vulnerable to common exploits. The worm also opens up a backdoor, allowing unauthorised remote access to infected computers via the IRC network, while running in the background as a service process.

W32/Rbot-QW copies itself to the Windows system folder and creates the following registry entries to run itself automatically on log-on:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
Windows service
wuamgrd.exe

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
Windows service
wuamgrd.exe

In addition, W32/Rbot-QW also creates the following registry entries:

HKCU\Software\Microsoft\OLE
Windows service
wuamgrd.exe

HKLM\SYSTEM\ControlSet001\Enum\Root\LEGACY_RASMAN\0000\Control\

HKLM\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_RASMAN\0000\Control\

W32/Rbot-QW can receive commands from a remote intruder to delete network shares, log keypresses, participate in DDoS attacks, scan other computers for vulnerabilities, steal passwords, steal registration keys for computer games and capture video from webcameras attached to infested computers.

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/Rbot-QW (detected as W32/Rbot-Fam) since version 3.88.