W32.Spybot.NLX

W32.Spybot.NLX is a worm that has distributed denial of service and back door capabilities.

The worm spreads through network shares protected by weak passwords and by exploiting the following vulnerabilities:

• The Microsoft Windows DCOM RPC Interface Buffer Overrun Vulnerability (described in Microsoft Security Bulletin MS03-026).
• The Microsoft Windows Local Security Authority Service Remote Buffer Overflow (as described in Microsoft Security Bulletin MS04-011).
• The Microsoft Windows SSL Library Denial of Service Vulnerability (described in Microsoft Security Bulletin MS04-011).
• The Vulnerabilities in the Microsoft SQL Server 2000 or MSDE 2000 audit (as described in Microsoft Security Bulletin MS02-061) using UDP port 1434.
• The UPnP NOTIFY Buffer Overflow vulnerability (as described in Microsoft Security Bulletin MS01-059).
• The Workstation Service Buffer Overrun vulnerability (as described in Microsoft Security Bulletin MS03-049) using TCP port 445. Windows XP users are protected against this vulnerability if Microsoft Security Bulletin MS03-043 has been applied. Windows 2000 users must apply MS03-049.
• The DameWare Mini Remote Control Server Pre-Authentication Buffer Overflow vulnerability (described in CAN-2003-0960.)

Protection

• Initial Rapid Release version April 12, 2005
• Latest Rapid Release version April 12, 2005
• Initial Daily Certified version April 12, 2005
• Latest Daily Certified version April 12, 2005
• Initial Weekly Certified release date April 13, 2005

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: 0 - 2
• Geographical Distribution: Low
• Threat Containment: Easy
• Removal: Moderate

Damage

• Damage Level: Medium

Distribution

• Distribution Level: Medium