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- Discovered:
- October 9, 2002
- Updated:
- February 13, 2007 11:57:11 AM
- Type:
- Trojan Horse
- Systems Affected:
- Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP
Trojan.UpsetKelk is a Trojan horse that decrypts and runs both W32.Klez.H@mm and W32.Elkern.4326 on infected computers. The Trojan attempts to terminate Norton AntiVirus (NAV) processes and services. It also attempts to disable NAV Auto-Protect.
The Trojan is written using Microsoft Visual C++.
Antivirus Protection Dates
- Initial Rapid Release version October 9, 2002
- Latest Rapid Release version August 20, 2008 revision 017
- Initial Daily Certified version October 9, 2002
- Latest Daily Certified version August 20, 2008 revision 016
- Initial Weekly Certified release date October 9, 2002
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Kaoru Hayashi
