1. Symantec/
  2. Security Response/
  3. Trojan.Gen


Risk Level 1: Very Low

February 19, 2010
October 28, 2014 3:24:32 AM
Systems Affected:
Windows 2000, Windows 7, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows Server 2008, Windows Vista, Windows XP
Trojan.Gen is a generic detection for many individual but varied Trojans for which specific definitions have not been created. A generic detection is used because it protects against many Trojans that share similar characteristics.

Trojan horse programs pose as legitimate programs or files that users may recognize and want to use. They rely on this trick to lure a user into inadvertently running the Trojan. Often a Trojan will mimic a well known legitimate file name or pose as a particular type of file, like a .jpg or .doc file to trick a user.

Distribution of Trojans on to compromised computers occurs in a variety of ways. From email attachments and links to instant messages, drive-by downloads and being dropped by other malicious software. Once installed on the compromised computer, the Trojan begins to perform the predetermined actions that it was designed for.

Antivirus Protection Dates

  • Initial Rapid Release version February 19, 2010 revision 037
  • Latest Rapid Release version September 15, 2016 revision 007
  • Initial Daily Certified version February 19, 2010 revision 040
  • Latest Daily Certified version September 15, 2016 revision 008
  • Initial Weekly Certified release date February 24, 2010
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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