Backdoor.Hale

Risk Level 1: Very Low

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Discovered:: August 5, 2003
Updated:: February 13, 2007 12:04:38 PM
Also Known As:: BackDoor-ATM.dr [McAfee]
Type:: Trojan Horse
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

Backdoor.Hale is a package of programs that provide backdoor access to an infected computer. This threat includes a Backdoor Trojan detected as Backdoor.Padmin, an FTP server, and various system utilities.

The existence of a C:\Winnt\System32\Qossrv folder is an indication of a possible infection. Some variants use C:\Winnt\System32\Dhcp instead, but this folder may be present on uninfected computers.

There have been reports that this threat is distributed by exploiting the DCOM RPC vulnerability, described in Microsoft Security Bulletin MS03-026. University domains have been heavily targeted.

Antivirus Protection Dates

Initial Rapid Release version August 6, 2003
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version August 6, 2003
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date August 6, 2003

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: 3 - 9
Geographical Distribution: Low
Threat Containment: Easy
Removal: Moderate

Damage

Damage Level: Medium

Distribution

Distribution Level: Low

Writeup By: Heather Shannon

Technical Details

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Internet Security Threat Report, Volume 16