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Donald Dick |
1.Summary:
Donald Dick is a Trojan Horse allowing the attacker to
access various
resources on the victim host. This event is generated when the
attackers
client connects to the Trojan server.
2.Impact:
Possible theft of data and control of the targeted machine
leading to a
compromise of all resources the machine is connected to.
3.Detailed Information:
This Trojan affects the following operating systems:
Windows 95
Windows 98
Windows NT
The Trojan changes system registry settings to add the Donald
Dick
server to programs normally started on boot. Due to the nature
of this
Trojan it is unlikely that the attacker's client IP address has
been
spoofed.
The default name of the server application is vmldir.vxd.
4.Attack Scenarios:
This Trojan may be delivered to the target in a number of
ways. This
event is indicative of an existing infection being activated.
Initial
compromise can be in the form of a Win32 installation program
that may
use the extension ".jpg" or ".bmp" when delivered via e-mail for
example.
5.Ease of Attack:
This is Trojan activity, the target machine may already be
compromised.
Updated virus definition files are essential in detecting this
Trojan.
6.Corrective Action:
Edit the system registry to remove the extra keys or restore a
previously known good copy of the registry.
Affected registry keys are:
HKEY_LOCAL_MACHINE\system\CurrentControlSet\Services\VxD\
Registry keys added:
VMLDR
This contains the key StaticVxD = "vmldir.vxd"
Delete the registry key VMLDR.
Delete the Troajn application vmldir.vxd.
A reboot of the infected machine is needed. |
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