[virusinfo] Sophos Anti-Virus IDE alert: W32/Sasser-E
- From: "Mike" <mikebike@xxxxxxxxx>
- To: virusinfo@xxxxxxxxxxxxx
- Date: Sun, 09 May 2004 17:56:41 -0700
From; Sophos Alert System:
Name: W32/Sasser-E
Type: Win32 worm
Date: 10 May 2004
A virus identity (IDE) file which provides protection is
available now from the Sophos website, and will be incorporated
into the June 2004 (3.82) release of Sophos Anti-Virus.
Customers using Enterprise Manager, PureMessage and any of the
Sophos small business solutions will be automatically protected
at their next scheduled update.
Information about W32/Sasser-E can be found at:
http://www.sophos.com/virusinfo/analyses/w32sassere.html
Description
W32/Sasser-E is a network worm which spreads by exploiting the Microsoft
LSASS vulnerability.
For further information on this vulnerability see Microsoft Security
Bulletin
MS04-011.
When first run W32/Sasser-E copies itself to the Windows folder with the
filename lsasss.exe and creates the following registry entry so the worm is
run automatically each time Windows is started:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
LSASS SVR = lsasss.exe
W32/Sasser-E attempts to connect out on port TCP/1022 and TCP/445. An FTP
script is then downloaded and executed which connects back on port TCP/1023
to download a copy of the worm via FTP.
Recovery
Please follow the instructions for removing worms.
Download the IDE file from:
http://www.sophos.com/downloads/ide/sasser-e.ide
Download all the IDE files available for the current version of
Sophos Anti-Virus in a single compressed file. The file is
available in two formats:
Zip file:
http://www.sophos.com/downloads/ide/ides.zip
Self-extracting file:
http://www.sophos.com/downloads/ide/ides.exe
Read about how to use IDE files at
http://www.sophos.com/downloads/ide/using.html
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