Prevx Research Division
MSNMSGRS.EXE
Fraudulent Security ProgramFree PC Cleanup from Webroot
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- Fraudulent Security Program
- Worm
- Internet Chat Worm
File Behavior
MSNMSGRS.EXE has been seen to perform the following behavior:
- Executes a Process
- This Process is a file infector which modifies program files to include a copy of the infection
- Creates a new Background Service on the machine
- Uses DNS to retrieve the IP address for web sites
- The Process is packed and/or encrypted using a software packing process
- Can Send email using SMTP protocols
- This Process sends MIME Email
- This Process can access Web Mail Servers
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Registers a Dynamic Link Library File
- This process creates other processes on disk
- Uses rootkit techniques to conceal its presence, interrogation or removal
- Looks at the contents of the autoexec.bat file
- Includes file creation code which could be used to test for interception by security products
- Found on infected systems and resists interrogation by security products
MSNMSGRS.EXE has been the subject of the following behavior:
- Copied to multiple locations on the system
- Executed as a Process
- Added as a Registry auto start to load Program on Boot up
- Created as a process on disk
- Deleted as a process from disk
- Added as a Registry Key (RUNONCE) to auto start Programs on system start up
Country Of Origin
The filename MSNMSGRS.EXE was first seen on May 8 2007 in the following geographical regions of the Webroot community:
- on May 8 2007
- France on May 8 2007
- Europe on Oct 4 2007
- Germany on Oct 4 2007
- Saudi Arabia on Jun 18 2008
- The United States on Sep 24 2009
- Thailand on May 22 2012
File Name Aliases
MSNMSGRS.EXE can also use the following file names:
- URLCORE_2.EXE
- URLCORE.EXE
- PROGRAM.EXE
- 刷分器.EXE
- W3NTSKAD.VXE
- REVISTA.HTM.COM
- WORM.SOMEFOOL.GEN-3.COM
- W32NETSKY-AD.EXE
- LANTROCIDADE.BAT
- DINHEIRO!!.TXT.PIF
- REVISTA.RTF.PIF
- BRASIL!.HTM.PIF
- IMPRESSAO!!.HTM.SCR
- FLIPE.TXT.COM
- GRANA!!.TXT.PIF
- ERASEME_15874.EXE
- UPDATE[n].EXE
- SERVER.EXE
- PI.EXE
- 26805008.EXE
- 86412774.EXE
- 65447994.DAT
- 66013865.EXE
Filesizes
The following file size has been seen:
- 6,524,416 bytes
- 336,384 bytes
- 31,232 bytes
- 174,592 bytes
- 42,699 bytes
- 63,488 bytes
- 54,371 bytes
- 25,600 bytes
File Type
The filename MSNMSGRS.EXE refers to many versions of an executable program.
File Activity
One or more files with the name MSNMSGRS.EXE creates, deletes, copies or moves the following files and folders:
- Opens/modifes c:\autoexec.bat
- Creates c:\documents and settings\user\application data\Microsof
- Creates c:\documents and settings\user\application data\microsoft\Crypt
- Creates c:\documents and settings\user\application data\microsoft\crypto\RS
- Creates c:\documents and settings\user\application data\microsoft\crypto\rsa\S-1-5-21-3293823761-2952981389-3168066103-100
- Deletes c:\windows\system32\msnmsgrs.exe
- Creates c:\windows\system32\msnmsgrs.exe
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