1. /
  2. Security Response/
  3. Trojan.Bicol


Risk Level 1: Very Low

February 12, 2013
February 12, 2013 3:24:58 PM
Systems Affected:
Windows 2000, Windows 7, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows Server 2008, Windows Vista, Windows XP
Trojan.Bicol is a Trojan horse that modifies the hosts file on the compromised computer in order to redirect the user to malicious websites.

Antivirus Protection Dates

  • Initial Rapid Release version February 12, 2013 revision 007
  • Latest Rapid Release version June 24, 2014 revision 006
  • Initial Daily Certified version February 12, 2013 revision 016
  • Latest Daily Certified version June 28, 2013 revision 024
  • Initial Weekly Certified release date February 13, 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: Redirects user to phishing websites.
  • Modifies Files: Modifies the hosts file.


  • 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: Santiago Cortes

Search Threats

Search by name
Example: W32.Beagle.AG@mm
STAR Antimalware Protection Technologies
Internet Security Threat Report