Microsoft Security Update

Security patch to prevent Blaster Worm virus
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Microsoft Security Update Ranking & Summary

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  • Rating:
  • License:
  • Update
  • Price:
  • Free
  • Publisher Name:
  • By Microsoft
  • Publisher web site:
  • http://www.microsoft.com/
  • Operating Systems:
  • Windows 2003, Windows 2000, Windows 98, Windows, Windows XP
  • Additional Requirements:
  • Windows XP, Windows 2000, Windows Server 2003, Windows NT 4.0, NT 4.0 Terminal Services Edition
  • File Size:
  • info
  • Total Downloads:
  • 5055

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Microsoft Security Update Description

The Microsoft Product Support Services Security Team is issuing this alert to inform customers about a new worm named W32.Blaster.Worm which is spreading in the wild. This virus is also known as: W32/Lovsan.worm (McAfee), WORM_MSBLAST.A (Trendmicro), Win32.Posa.Worm (Computer Associates). Best practices, such as applying security patch MS03-026 should prevent infection from this worm. This worm scans a random IP range to look for vulnerable systems on TCP port 135. The worm attempts to exploit the DCOM RPC vulnerability patched by MS03-026.Once the Exploit code is sent to a system, it downloads and executes the file MSBLAST.EXE from a remote system via TFTP. Once run, the worm creates the registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "windows auto update" = msblast.exe I just want to say LOVE YOU SAN!! billSymptoms of the virus: Some customers may not notice any symptoms at all. A typical symptom is the system is rebooting every few minutes without user input. Customers may also see:Presence of unusual TFTP* filesPresence of the file msblast.exe in the WINDOWS SYSTEM32 directoryTo detect this virus, search for msblast.exe in the WINDOWS SYSTEM32 directory or download the latest anti-virus software signature from your anti-virus vendor and scan your machine.


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