Backdoor.Hale

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.

Protection

• Initial Rapid Release version August 6, 2003
• Latest Rapid Release version August 20, 2008 revision 017
• Initial Daily Certified version August 6, 2003
• Latest Daily Certified version August 20, 2008 revision 016
• Initial Weekly Certified release date August 6, 2003

Click here 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