
SASSER
WORM SPREADS IN THE WILD
Virus Name : W32.Sasser.Worm
Alias : W32/Sasser.Worm,
W32/Sasser-A, Sasser.A,
WORM_SASSER.A, W32.Sasser.B.Worm,
I-Worm/Generic
Virus type : Internet
worm
Threat
level : High
Virus
details :
Sasser is a network
Worm, exploits a remote code execution
vulnerability LSASS to infect target systems. It
scans for IP addresses and infects unpatched
systems. This worm targets Windows 2000, and
Windows XP systems. Solo Antivirus can detect and
remove Sasser worm and its variants safely.
Sasser worm copies to
Windows folder as AVSERVE2.EXE. Then it
modifies registry run section to load
automatically on the next startup. The registry
modification is given below.
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
"avserve2.exe"= %WINDOWS%\avserve2.exe
[
By default, %WINDOWS% will be C:\Windows in case
of Windows 95/98/ME/XP, C:\Winnt in case of
Windows NT/2000 ]
Sasser worm can be
avoided by installing security patches from
Microsoft. If you have not installed, you can get
a copy at http://www.microsoft.com/technet/security/bulletin/MS04-011.mspx The worm infected users
will receive the error messages like
System
Shutdown
This system is shutting down. Please save
all
work in progress and log off. Any unsaved
changes will be lost. This shutdown was
initiated by NT AUTHORITY\SYSTEM
Time
before shutdown : 00:00:59
Message
The system process
C:\WINDOWS\System32\Lsass.exe
terminated unexpectedly with status code 0.
The system will shutdown and restart.
Sasser
worm infected systems will crash and reboot by
dispalying error in LSASS.exe. This worm appeared
on 30th April 2004.
How can I protect my
system?
Solo has incorporated
W32.Sasser.Worm in its signature file to protect
users from this worm attack. Make sure that you
have installed registered version of Solo
Antivirus to protect your system from all virus
threats.
How
to remove this worm?
If you are already
infected with this worm, download and install
security patches from the link http://www.microsoft.com/technet/security/bulletin/MS04-011.mspx Then run Solo anti-virus
scanner to remove the worm components.
Solo
antivirus can detect and remove W32.Sasser.Worm
and its variants safely. Use the
following link to Download 30 day trial
version of Solo antivirus
to
remove viruses from your computer.

Solo anti-virus not only
scans for all viruses, it contains a unique System
Integrity Checker to protect you from
New Internet Worms, Backdoors and
malicious VB, Java Scripts. It also
effectively removes all existing Internet Worms,
File viruses, malicious VB, Java scripts,
Trojans, Backdoors, boot sector, partition table
and macro viruses.
You can
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