Blackworm

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This article is about the computer virus. For the species of worm, see California blackworm.

Blackworm is an Internet worm that spreads by e-mail via messages with infected attachments and through unprotected network shares. The user can accidentally infect a computer by opening a malicious e-mail attachment or running an infected executable file on a computer running common versions of Microsoft Windows.

Blackworm is also known as Grew.a, Grew.b, Blackmal.e, Nyxem.e, Nyxem.d, Mywife.d, Tearec.a, CME-24, and Kama Sutra.

Blackworm is designed to corrupt data on infected computers on February 3, 2006, in respect to The Day the Music Died. It also deletes the files belonging to several antivirus programs, if they are installed in the same directories as the ones specified in the worm's code. It also deletes the entries in the Windows Registry belonging to these antivirus programs, so these applications will not be run automatically the next time Windows is started. Microsoft puts Blackworm's damage rating at "high".

The damage caused by this virus is little so far, but experts advised users to keep watchful February 4 through February 5.

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