This is the e-mail I had from my virus people on this :-
Dear Trend Micro Customer:
Due to continuous infection reports coming in from different regions,
TrendLabs has raised the alert level for this malware from Yellow to Red.
TrendLabs officially released pattern file 604 to protect users from this
worm. However, due to new variants discovered, we recommend that all users
update to the latest official pattern file.
This malware exploits a vulnerability that allows it to propagate to Windows
2000 and XP systems. TrendLabs urges users to apply the patch, which is
In addition, users may download the Trend Micro System Cleaner, our
automated cleaning solution, from:
For more information on WORM_MSBLAST.A and other variants, please visit our
Web site at:
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