File Investigation Report

MSNLOADER.EXE

System Back Door

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PC Magazine, Editors' Choice, May 2009

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Associated Malware Groups

The unsafe files using this name are associated with the malware groups:

System Back Door
Worm
Malicious Software

File Behavior

MSNLOADER.EXE has been seen to perform the following behavior:

Executes a Process
Writes to another Process's Virtual Memory (Process Hijacking)
The Process is packed and/or encrypted using a software packing process
Registers a Dynamic Link Library File
Found on infected systems and resists interrogation by security products
Uses low level functions to hide itself from the user and from system/security processes
Checks for the use of debuggers
Uses DNS to retrieve the IP address for web sites
Uses your PC to connect to Chat rooms

MSNLOADER.EXE has been the subject of the following behavior:

Created as a process on disk
Deleted as a process from disk
Executed as a Process
Has code inserted into its Virtual Memory space by other programs
Executed by Internet Explorer
Executed from Temporary Folders
Terminated as a Process
Registered as a Dynamic Link Library File
Added as a Registry auto start to load Program on Boot up
Copied to multiple locations on the system

Country Of Origin

The filename MSNLOADER.EXE was first seen on May 22 2007 in the following geographical regions of the Prevx community:

SPAIN on May 22 2007
URUGUAY on Mar 28 2008

File Name Aliases

MSNLOADER.EXE can also use the following file names:

MSN_LOADER.EXE
MSNLOADER(��MSN��).EXE
MSNLOADER UNIVERSAL.EXE
MSN MESSENGER 7.5 COKLU OTURUM.EXE
MSNLOADER_EXE_1.EXE
MSNLOADER%20UNIVERSAL[n].EXE
MSNLOADER1.EXE
MYPHOTO39.JPEG-SCANNEDBYMSN.COM
MSN LOADER UNIVERSAL.EXE
MSNLOADER[n].EXE
ÇOKLU MSN.EXE
ÇOKLU MSNLOADER.EXE
2[1].EXE
DD238.EXE

Filesizes

The following file size has been seen:

4,061 bytes
82,432 bytes
3,653 bytes
81,408 bytes
161,100 bytes

File Type

The filename MSNLOADER.EXE refers to many versions of an executable program.

File Activity

One or more files with the name MSNLOADER.EXE creates, deletes, copies or moves the following files and folders:

Creates c:\docume~1\user\locals~1\temp\9a87_appcompat.txt
Creates c:\docume~1\user\locals~1\temp\19630.dmp
Opens/modifes c:\autoexec.bat

Network Activity

One or more files with the name MSNLOADER.EXE performs the following network events:

DNS Lookup125.240.182.140 01.cybernix.info

Website Activity

One or more files with the name MSNLOADER.EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.

TCP:125.240.182.140:9058 Port:14

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