> Viruses & Risks > Trojan.Cryptolocker!g1


Risk Level 1: Very Low

September 13, 2013
November 14, 2013 7:50:06 PM
Also Known As:
Trojan.Ransomcrypt!g3 [Symantec]
Systems Affected:
Windows 2000, Windows 7, Windows 95, Windows 98, Windows Me, Windows NT, Windows Vista, Windows XP
Trojan.Cryptolocker!g1 is a heuristic detection used to detect threats associated with the Trojan.Cryptolocker family of threats.

Note: Virus definitions dated November 13, 2013 or earlier may detect this threat as Trojan.Ransomcrypt!g3.

For more information, please see the following resource:
Cryptolocker: A Thriving Menace

Antivirus Protection Dates

  • Initial Rapid Release version pending
  • Latest Rapid Release version November 13, 2013 revision 020
  • Initial Daily Certified version pending
  • Latest Daily Certified version November 13, 2013 revision 023
  • 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: Medium
  • Payload: Demands a ransom to decrypt files on the compromised computer.
  • Modifies Files: Encrypts certain files.


  • Distribution Level: Low

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