Deltree Trojan

Risk Level 1: Very Low

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Discovered:: November 26, 1996
Updated:: February 13, 2007 11:42:46 AM
Type:: Trojan Horse
Systems Affected:: Windows 2000, Windows 3.x, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

Deltree Trojan attempts to use the Deltree program to delete all the files from the C drive.

Deltree Trojan usually replaces the contents of the Autoexec.bat file with this line:

deltree c: /y

If the Autoexec.bat file is run, which automatically happens each time you start a Windows 95/98/Me computer, the command deletes all the files on the C drive.

Antivirus Protection Dates

Initial Rapid Release version November 27, 1996
Latest Rapid Release version July 20, 2011 revision 037
Initial Daily Certified version November 27, 1996
Latest Daily Certified version July 20, 2011 revision 036
Initial Weekly Certified release date November 27, 1996

Click for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

Wild Level: Low
Number of Infections: 0 - 49
Number of Sites: 0 - 2
Geographical Distribution: Low
Threat Containment: Easy
Removal: Easy

Damage

Damage Level: Low

Distribution

Distribution Level: Low

Writeup By: Kaoru Hayashi

Removal

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Internet Security Threat Report, Volume 16