Aliases
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W32/Nachi.worm.m
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Worm.Win32.Welchia.l
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W32.Welchia.gen
Characteristics
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Modifies data on the computer
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Deletes files off the computer
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Downloads code from the internet
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Installs itself in the registry
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Exploits known vulnerabilites
Affected Operating Systems
Recovery Instructions:
Please follow the instructions for removing worms.
Download and install the Microsoft patches mentioned. On standalone computers, update with all relevant security patches from Windows update.