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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

LSASS

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:LSASS
Technical name:Exploit/LSASS
Threat level:Medium
Alias:Exploit/LSASS2, LSASS2
Type:Hacking Tool
Effects:  

It is code for attempting to exploit the LSASS vulnerability in Windows XP/2000 computers.

Affected platforms:

Windows XP/2000

First detected on:June 22, 2004
Detection updated on:Feb. 2, 2005
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

LSASS is code designed for trying to exploit the LSASS vulnerability in Windows XP/2000 computers.

Some worms, like variants of Korgo.A, Sasser.A, Bobax.A and Gaobot, spread through the Internet. In order to do so, they generate several random IP addresses. Then, these worms send LSASS to these IP addresses.

If the targeted computer is not properly updated, when it receives LSASS, these worms will be downloaded and executed.

Another possible scenario would be the creation of a program that would scan IP addresses. This program should detect the vulnerable IPs in order to install other malware, such as Trojans or backdoors, in the targeted computers.

Panda Security detects the code necessary for attempting to exploit the LSASS vulnerability as LSASS, thus warning users on a network traffic increase associated to this threat and preventing them from being affected.

If you have a Windows XP/2000 computer, it is highly recommendable that you download the security patch from Microsoft's web site, by clicking here.

Visible Symptoms 

    

Exploit/LSASS is difficult to recognize, as it does not display any messages or warnings that indicate it has reached the computer.