Sophos

W32/Rbot-AEK

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 2 June 2005 22:15:56 (GMT)
Detected by All Sophos products
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  • Test your existing anti-virus protection
  • Find threats your anti-virus missed

Action

More Information

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

W32/Rbot-AEK 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-AEK copies itself to <Windows system folder>\cmdzxdll.exe.

W32/Rbot-AEK is capable of spreading to computers on the local network protected by weak passwords after receiving the appropriate backdoor command.

W32/Rbot-AEK may also spread by exploiting the following vulnerabilities for which patches can be obtained from the Microsoft website :

MS04-011
MS04-012
MS03-049
MS02-039

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

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
MsgSvcMgr32
cmdzxdll.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
MsgSvcMgr32
cmdzxdll.exe

The following registry entry is set:

HKCU\Software\Microsoft\OLE
MsgSvcMgr32
cmdzxdll.exe

Sophos's anti-virus products include Genotype detection technology, which can proactively protect against new threats without requiring an update. Sophos customers have been protected against W32/Rbot-AEK (detected as Rbot-Gen) since version 3.88.

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