Published Nov 09, 2004|Updated Sep 15, 2017

Worm:Win32/Msblast.A

Alert level: Severe Detected with Windows Defender Antivirus

Also detected as: W32.Blaster.Worm (Symantec) W32/Lovsan.worm.a (McAfee) WORM_MSBLAST.A (Trend Micro) Win32.Poza.A (CA) Lovsan (F-secure) Worm.Win32.Blaster.6176 (Global Hauri) W32/Blaster.A (Norman) Blaster (Panda) W32/Blaster-A (Sophos)

Win32/Msblast.A is a network worm that can spread to a computer running Microsoft Windows 2000 or Windows XP that does not have Security Update MS03-026 or MS03-039 installed. It performs a denial of service (DoS) attack against windowsupdate.com if the day of the month is greater than 15 or the month is September or later.

 

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