[virusinfo] W32/Rbot-YO
- From: "Mike" <mikebike@xxxxxxxxx>
- To: virusinfo@xxxxxxxxxxxxx
- Date: Fri, 18 Mar 2005 10:12:59 -0800
From; Sophos Alert System:
Name: W32/Rbot-YO
Type: Win32 worm
Date: 18 March 2005
A virus identity (IDE) file which provides protection is
available now from the Sophos website, and will be incorporated
into the May 2005 (3.93) release of Sophos Anti-Virus.
Customers using EM Library, PureMessage or any of our Sophos
small business solutions will be automatically protected at
their next scheduled update.
At the time of writing, Sophos has received no reports from
users affected by this worm. However, we have issued this
advisory following enquiries to our support department from
customers.
Information about W32/Rbot-YO can be found at:
http://www.sophos.com/virusinfo/analyses/w32rbotyo.html
W32/Rbot-YO is a Windows network worm which attempts to spread via network
shares. The worm contains backdoor functions that allows unauthorised remote
access to the infected computer via IRC channels while running in the
background.
The worm spreads to network shares with weak passwords and also by using the
LSASS security exploit (MS04-011) and the RPC-DCOM security exploit (MS03-039).
When run W32/Rbot-YO moves itself to the Windows System folder as a hidden,
read-only, system file named mcafe32.exe.
The worm then creates the following registry entries so as to run itself on
computer logon:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Windows Media Player
mcafe32.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Windows Media Player
mcafe32.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Windows Media Player
mcafe32.exe
Once installed, W32/Rbot-YO will attempt to participate in denial of service
(DoS) attacks, download and run files from the internet, steal CD keys, log
keystrokes and login to MS SQL servers and send EXEC commands to open a command
shell when instructed to do so by a remote attacker.
This IDE file also includes detection for:
Troj/StartPa-FG
http://www.sophos.com/virusinfo/analyses/trojstartpafg.html
Troj/Small-DP
http://www.sophos.com/virusinfo/analyses/trojsmalldp.html
W32/Baba-E
http://www.sophos.com/virusinfo/analyses/w32babae.html
Troj/Dloader-JP
http://www.sophos.com/virusinfo/analyses/trojdloaderjp.html
W32/Rbot-YM
http://www.sophos.com/virusinfo/analyses/w32rbotym.html
Troj/Multidr-MI
http://www.sophos.com/virusinfo/analyses/trojmultidrmi.html
Troj/AdClick-AL
http://www.sophos.com/virusinfo/analyses/trojadclickal.html
Troj/Bancos-BR
http://www.sophos.com/virusinfo/analyses/trojbancosbr.html
Troj/Dropper-AC
http://www.sophos.com/virusinfo/analyses/trojdropperac.html
Download the IDE file from:
http://www.sophos.com/downloads/ide/rbot-yo.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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