W32/Rbot-AFR

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.

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.

W32/Rbot-AFR is a network worm and IRC backdoor Trojan for the Windows platform.

W32/Rbot-AFR spreads using a variety of techniques including exploiting weak passwords on computers and exploiting operating system vulnerabilities including:

WKS (MS03-049)
WebDav (MS03-007)

W32/Rbot-AFR can be controlled by a remote attacker over IRC channels. The backdoor component of W32/Rbot-AFR can be instructed by a remote user to perform a list of functions.

The following patches for the operating system vulnerabilities exploited by W32/Rbot-AFR can be obtained from the Microsoft website at:

MS03-049
MS03-007 W32/Rbot-AFR is a network worm and IRC backdoor Trojan for the Windows platform.

W32/Rbot-AFR spreads using a variety of techniques including exploiting weak passwords on computers and exploiting operating system vulnerabilities including:

WKS (MS03-049)
WebDav (MS03-007)

W32/Rbot-AFR can be controlled by a remote attacker over IRC channels. The backdoor component of W32/Rbot-AFR can be instructed by a remote user to perform a list of functions including:

start an FTP server
start a web server
take part in distributed denial of service (DDoS) attacks
log keypresses
capture screen/webcam images
packet sniffing
port scanning
steal CD keys
download/execute arbitrary files
start a remote shell (RLOGIN)

When first run W32/Rbot-AFR copies itself to <System>\syspci32.exe.

The following registry entries are created to run syspci32.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
System32 PCI Manager
syspci32.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
System32 PCI Manager
syspci32.exe

Registry entries are set as follows:

HKCU\Software\Microsoft\OLE
System32 PCI Manager
syspci32.exe

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1

The following patches for the operating system vulnerabilities exploited by W32/Rbot-AFR can be obtained from the Microsoft website at:

MS03-049
MS03-007