Sophos

W32/Rbot-BJN

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 9 January 2006 14:02:45 (GMT)
Detected by All Sophos products
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  • Endpoint Security and Control 9.0
  • Small business solutions 4.0

Action

More Information

W32/Rbot-BJN is network worm and backdoor Trojan for the Windows platform.

W32/Rbot-BJN can spread via the RPC-DCOM (MS04-012) and LSASS (MS04-011) buffer overflow vulnerabilities.

W32/Rbot-BJN 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-BJN copies itself to <System>\ivhost.exe.

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

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
MS Host Manager
ivhost.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
MS Host Manager
ivhost.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
MS Host Manager
ivhost.exe

Registry entries are set as follows:

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1

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