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 <System>\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