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  3. Trojan.Tooso.J


Risk Level 2: Low

June 26, 2005
February 13, 2007 12:41:11 PM
Also Known As:
Win32.Glieder.{AO, AP} [Computer Associates], Email-Worm.Win32.Bagle.{bq, br} [Kaspersky Lab], Mitglieder.CN [F-Secure], Troj/BagleDl-R [Sophos], TROJ_BAGLE.BB [Trend Micro]
Trojan Horse
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

Trojan.Tooso.J is a Trojan horse that interferes with the operation of security software by ending processes, stopping services, removing registry entries, and deleting files.

Antivirus Protection Dates

  • Initial Rapid Release version June 27, 2005
  • Latest Rapid Release version July 26, 2008 revision 017
  • Initial Daily Certified version June 27, 2005
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date June 29, 2005
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


  • Wild Level: Low
  • Number of Infections: 50 - 999
  • Number of Sites: More than 10
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Moderate


  • Damage Level: Medium


  • 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: Rodney Andres

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