Sophos

W32/Raleka-B

Aliases
  • W32.HLLW.Raleka
  • Win32/Raleka.A
  • Worm.Win32.Raleka.b
Category
Type
What to do
Prevalence low high

Summary

 
Protection available since 28 September 2003 09:47:19 (GMT)
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Action

More Information

W32/Raleka-B is a network worm which uses the Microsoft DCOM RPC vulnerability to propagate across a network.

The worm will attempt to connect to vulnerable computers and upload and execute the following files:
svchost.exe, ntrootkit.exe, ntrootkit.reg and service.exe

Svchost.exe is a copy of the worm itself.
Ntrootkit.exe is a copy of the backdoor Trojan Troj/RtKit-11.
Ntrootkit.reg is a file used to run Troj/RtKit-11 on Windows XP systems.
Service.exe is a legitimate utility.

The worm will attempt to download and install the Microsoft patch for the DCOM RPC vulnerability.

W32/Raleka-B includes backdoor functionality. The worm will attempt to contact IRC servers and await instructions from a remote attacker.

Microsoft has issued a patch for the vulnerability exploited by this worm. The patch is available from www.microsoft.com/technet/security/bulletin/MS03-026.asp.

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