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  3. Trojan.Ransomlock.AJ


Risk Level 1: Very Low

October 25, 2013
October 30, 2013 3:14:52 PM
Systems Affected:
Windows 2000, Windows 7, Windows 95, Windows 98, Windows Me, Windows NT, Windows Vista, Windows XP
Trojan.Ransomlock.AJ is a Trojan horse that may download additional threats and lock the compromised computer.

Note: Virus definitions dated October 10, 2013 or earlier detect this threat as Trojan.Nymaim.

Antivirus Protection Dates

  • Initial Rapid Release version October 25, 2013 revision 016
  • Latest Rapid Release version May 1, 2015 revision 032
  • Initial Daily Certified version October 26, 2013 revision 007
  • Latest Daily Certified version May 2, 2015 revision 001
  • Initial Weekly Certified release date October 30, 2013
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: Medium
  • Payload: Downloads additional threats and locks the desktop.


  • 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: Mark Anthony Balanza

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