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NetSky.C_2 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. NetSky.C_2 has a file size of 28,160 bytes. NetSky.C_2 drops the following files on the hard drive:
  • C:\WINDOWS\winlogon.exe (28160 bytes)
It also changes Windows registry:
  • Creates value "ICQ Net"="C:\WINDOWS\winlogon.exe -stealth" in key "HKLM\Software\Microsoft\Windows\CurrentVersion\Run".
It creates the following mutex to ensure only one instance is running: []SystemsMutex. It also is executed every time Windows starts.

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