Sophos

W32/MsTori-A

Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Email attachments
  • Peer-to-peer
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 9 February 2006 04:56:55 (GMT)
Last updated 30 May 2006 07:05:16 (GMT)
Detected by All Sophos products
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Action

More Information

W32/MsTori-A is a P2P and mass-mailing worm for the Windows platform.

When first run W32/MsTori-A may copy itself to the following locations:
\system.com
\Windo5s.com
Myshared\ToRi-Samples.exe
Myshared\WinSE-x86-patch.com

W32/MsTori-A also searches for a random filename harvested from the Windows folder and copies itself to \<harvested random filename>.

W32/MsTori-A creates the following files:

<current folder>\mstori.dll - detected as W32/MsTori-A
<current folder>\mstori.exe - detected as W32/MsTori-A
\mstori32.bat - this file may be deleted

When run W32/MsTori-A displays a fake message box with the title "Microsoft Office" and the message "Microsoft Outlook Updater".

W32/MsTori-A may spread by sending itself to harvested addresses with the following properties:

Message text chosen from:

'Hi U have a fun
ToRi-Samples Full Strepteases on descktop Free (Only For Best Friend)
VirtuaGirl2 Desktop Strepteases
you can see information to http://www.virtuagirl2.com'

'Hi Security ,...
Please Patched Your Windows By Microsft New Patch(Very Important)
Send Patch Program To All Friends
You can see bug info to www.SecurityFocus.com'

Attachment filenames chosen from:

Myshared\ToRi-Samples.exe
Myshared\WinSE-x86-patch.com

The following registry entry is set to run W32/MsTori-A on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
<random filename>
\<harvested random filename>

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