| 1.Impact:
Possible theft of data and control of the targeted machine
leading to a compromise of all resources the machine is
connected to.
2.Detailed Information:
This Trojan affects the following operating systems:
Windows 95
Windows 98
Windows ME
Windows NT
Windows 2000
Windows XP
No other systems are affected. This is a windows executable that
makes
changes to the system registry.
The Trojan changes system startup files and registry settings to
add the
QAZ sever to programs normally started on boot.
3.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.
4.Ease of Attack:
This is Trojan activity, the target machine may already be
compromised. Updated virus definition files are essential in
detecting this Trojan.
5.Corrective Action:
This is a particularly difficult Trojan to remove and should
only be attempted by an experienced Windows Administrator.
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\Software\Microsoft\Windows\Current
Version\Run
Registry keys added are:
StartIE=C:\WINDOWS\notepad.exe qazwsx.hsq
This will start the Trojan each time notepad is executed.
Look for the existence of the file note.com. The file
notepad.exe may have been replaced with a Trojaned version that
is approximately 120 kb in size (the original is 52 kb).
A machine reboot is required to clear the existing process from
running in memory. |
