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  3. HardLock.618


Risk Level 1: Very Low

February 9, 2001
February 13, 2007 11:56:35 AM
Also Known As:
Trojan.Dood, Mutha Trojan
Trojan Horse

HardLock.618 is a boot Trojan. It does not infect or delete files. This Trojan changes a byte in the Master Boot Record (MBR) of the hard drive. The change prevents the computer from booting.

Antivirus Protection Dates

  • Initial Rapid Release version February 9, 2001
  • Latest Rapid Release version February 9, 2001
  • Initial Daily Certified version February 9, 2001
  • Latest Daily Certified version February 9, 2001
  • Initial Weekly Certified release date pending
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Easy


  • Damage Level: Low


  • Distribution Level: Low
Note: On May 14, 2015, modifications will be made to the threat write-ups to streamline the content. The Threat Assessment section will no longer be published as this section is no longer relevant to today's threat landscape. The Risk Level will continue to be the main threat risk assessment indicator.
Writeup By: Gor Nazaryan

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