Sophos

W32/Rbot-GAI

Aliases
  • Backdoor.Win32.Rbot.gen
Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Network shares
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 10 January 2007 00:20:57 (GMT)
Detected by All Sophos products
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Action

More Information

W32/Rbot-GAI is a worm with IRC backdoor functionality for the Windows platform.

W32/Rbot-GAI spreads to other network computers by exploiting common buffer overflow vulnerabilities, including: LSASS (MS04-011), SRVSVC (MS06-040), RPC-DCOM (MS04-012), ASN.1 (MS04-007) and RealVNC (CVE-2006-2369).

W32/Rbot-GAI 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-GAI copies itself to \winligom.exe.

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

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
(default)
winligom.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
(default)
winligom.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
(default)
winligom.exe

The following registry entries are set, affecting internet security:

HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters
\FirewallPolicy\StandardProfile\AuthorizedApplications\List
(default)
:*:Enabled:

HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters
\FirewallPolicy\StandardProfile\AuthorizedApplications\List
(default)
:*:Enabled

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