1. Symantec/
  2. Security Response/
  3. Troj.Polyglot


Risk Level 1: Very Low

September 15, 1999
February 13, 2007 11:58:02 AM
Also Known As:
Count2K, Y2KCOUNT, Troj_Polyglot
Trojan Horse, Virus

Troj.Polyglot is a Trojan horse program that comes as an email attachment Y2Kcount.exe. The email message is disguised as a message from Microsoft Support. This message is not from Microsoft. The attached Y2Kcount.exe program is a self-extracting Trojan horse program.

The message contains the following message:

    To All Microsoft Users,

    We are excited to announce Microsoft Year 2000 counter.
    Start the countdown now.  Let us all get in the 21
    Century. Let us lead the way to the future and we
    will get you there FASTER and SAFER.

    Thank you,
    Microsoft Corporation

Symantec AntiVirus Research Center's Scan and Deliver received this Trojan horse for the first time on September 15, 1999.

Antivirus Protection Dates

  • Initial Rapid Release version September 19, 1999
  • Latest Rapid Release version August 8, 2016 revision 023
  • Initial Daily Certified version September 19, 1999
  • Latest Daily Certified version August 9, 2016 revision 001
  • Initial Weekly Certified release date pending
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

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STAR Antimalware Protection Technologies
2016 Internet Security Threat Report, Volume 21
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