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Mytob.U@mm#yC_upx is a Worm. Worms spread from computer to computer, making copies of themselves over the network. They could spread over email, IM, peer-to-peer networks, or directly over the wire by leveraging vulnerabilities. Mytob.U@mm#yC_upx is compressed using the UPX executable packer and its file size is 59,392 bytes. Mytob.U@mm#yC_upx drops the following files on the hard drive:
  • C:\WINDOWS\SYSTEM32\msnmsgs.exe (59392 bytes)
It creates the following mutex to ensure only one instance is running: H-E-L-L-B-O-T-2-BY-DIABLO.

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