[virusinfo] W32/Rbot-YN

  • From: "Mike" <mikebike@xxxxxxxxx>
  • To: virusinfo@xxxxxxxxxxxxx
  • Date: Fri, 18 Mar 2005 10:16:09 -0800

From; Sophos Alert System:

Name: W32/Rbot-YN
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 a small number of
reports of this worm from the wild.


Note: The IDE issued for W32/Rbot-YN at 20:26 GMT on 17 March
also contained detection for Troj/Banker-BO, Troj/Haxdoor-AE,
Dial/XXXDial-G, Troj/Multidr-CO, Troj/LdPinch-AR, W32/Rbot-YZ
and Troj/IPCScan-B. This IDE has now been updated to remove
detection of Troj/IPCScan-B.  

Information about W32/Rbot-YN can be found at:
http://www.sophos.com/virusinfo/analyses/w32rbotyn.html

W32/Rbot-YN is a network worm with backdoor functionality for the Windows 
platform. 
W32/Rbot-YN may spread to remote network shares protected by weak passwords and 
computers vulnerable to common exploits. The worm also opens up a backdoor, 
allowing unauthorised remote access to infected computers via the IRC network, 
while running in the background as a service process. The worm exploits the 
following vulnerabilities: RPC-DCOM (MS04-012) and LSASS (MS04-011). 
W32/Rbot-YN can receive commands from a remote intruder to delete network 
shares, log keypresses, participate in DDoS attacks, scan other computers for 
vulnerabilities, steal passwords, steal registration keys for computer games, 
create administrator accounts, terminate firewall and anti-virus processes and 
capture video from webcameras attached to the computer. 
W32/Rbot-YN copies itself to the Windows system folder as "msnshed.exe" and 
creates the following registry entries in order to run automatically on 
computer logon: 
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
msnshed
msnshed.exe 
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
msnshed
msnshed.exe 
HKCU\Software\Microsoft\Windows\OLE\
msnshed
msnshed.exe 

This IDE file also includes detection for:

Troj/Banker-BO
http://www.sophos.com/virusinfo/analyses/trojbankerbo.html
Troj/Haxdoor-AE
http://www.sophos.com/virusinfo/analyses/trojhaxdoorae.html
Dial/XXXDial-G
http://www.sophos.com/virusinfo/analyses/dialxxxdialg.html
Troj/Multidr-CO
http://www.sophos.com/virusinfo/analyses/trojmultidrco.html
Troj/LdPinch-AR
http://www.sophos.com/virusinfo/analyses/trojldpinchar.html
W32/Rbot-YZ
http://www.sophos.com/virusinfo/analyses/w32rbotyz.html
Troj/IPCScan-B
http://www.sophos.com/virusinfo/analyses/trojipcscanb.html

Download the IDE file from:
http://www.sophos.com/downloads/ide/rbot-yn.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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