Virus type: Worm
Destructive: Yes
Description:
This memory-resident worm exploits RPC DCOM BUFFER OVERFLOW, a vulnerability in a Windows Distributed Component Object Model (DCOM) Remote Procedure Call (RPC) interface, to infect remote machines. The vulnerability allows an attacker to gain full access and execute any code on a target machine, leaving it compromised.
On the following system dates, it launches a thread that performs a distributed denial of service (DDoS) attack against windowsupdate.com:
On the 16th to the 31st day of the following months:
January
February
March
April
May
June
July
August
Any day in the month of September to December
For more information on the RPC DCOM Buffer Overflow, please visit the following Microsoft pages:
Microsoft Security Bulletin MS03-026
Microsoft Security Bulletin MS03-039
More: http://www.trendmicro.com/vinfo/virusencyclo/default5.asp?VName=WORM_MSBLAST.H

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