Sophos

W32/Rbot-GFW

Aliases
  • Backdoor.Win32.SdBot.ado
  • WORM_RBOT.CWU
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 23 February 2007 00:35:19 (GMT)
Detected by All Sophos products
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Action

More Information

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

W32/Rbot-GFW 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-GFW copies itself to <System>\ifconfig.exe.

W32/Rbot-GFW spreads
- to computers vulnerable to common exploits, including: LSASS (MS04-011), SRVSVC (MS06-040), RPC-DCOM (MS04-012), ASN.1 (MS04-007), RealVNC (CVE-2006-2369) and Symantec (SYM06-010)
- to MSSQL servers protected by weak passwords
- to network shares

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

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

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

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
(default)
ifconfig.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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