high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
|
| Included in our products from | November 2005 (3.99) |
| Protection available since | 12 October 2005 08:45:36 (GMT) |
| Detected by | All Sophos products |
Action
- Summary
- Action
- More Information
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.
More Information
W32/Rbot-ARD is a worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-ARD spreads:
- to other network computers infected with: Troj/Kuang, Troj/Sub7, Troj/NetDevil, W32/MyDoom, W32/Bagle and Troj/Optix
- to other network computers by exploiting common buffer overflow vulnerabilities, including: LSASS (MS04-011), RPC-DCOM (MS04-012), WKS (MS03-049) (CAN-2003-0812), WebDav (MS03-007), IIS5SSL (MS04-011) (CAN-2003-0719), UPNP (MS01-059), Veritas (CAN-2004-1172), Dameware (CAN-2003-1030) and ASN.1 (MS04-007)
- by copying itself to network shares protected by weak passwords
W32/Rbot-ARD runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels.
The following patches for the operating system vulnerabilities exploited by W32/Rbot-ARD can be obtained from the Microsoft website:
MS04-011
MS04-012
MS03-049
MS03-007
MS01-059
MS04-007
W32/Rbot-ARD is a worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-ARD spreads:
- to other network computers infected with: Troj/Kuang, Troj/Sub7, Troj/NetDevil, W32/MyDoom, W32/Bagle and Troj/Optix
- to other network computers by exploiting common buffer overflow vulnerabilities, including: LSASS (MS04-011), RPC-DCOM (MS04-012), WKS (MS03-049) (CAN-2003-0812), WebDav (MS03-007), IIS5SSL (MS04-011) (CAN-2003-0719), UPNP (MS01-059), Veritas (CAN-2004-1172), Dameware (CAN-2003-1030) and ASN.1 (MS04-007)
- by copying itself to network shares protected by weak passwords
W32/Rbot-ARD runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels.
When first run W32/Rbot-ARD copies itself to the Windows System folder as a random filename.
The following registry entries are created to run W32/Rbot-ARD on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Telnet24
<random filename>
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Telnet24
<random filename>
Registry entries are set as follows:
HKCU\Software\Microsoft\OLE
Telnet24
<random filename>
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-ARD can be obtained from the Microsoft website:
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