COMP.EXE, Prevx

Associated Malware Groups

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

Worm
Malicious Software

File Behavior

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

The Process is packed and/or encrypted using a software packing process
Copies files
This Process is a file infector which modifies program files to include a copy of the infection
Executes a Process
Looks at the contents of the autoexec.bat file
Drops known malicious software during execution
Opens browser pop ups
Adds products to the system registry
Writes to another Process's Virtual Memory (Process Hijacking)
This process creates other processes on disk
Creates new folders on the system

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

Created as a process on disk
Executed as a Process
Has code inserted into its Virtual Memory space by other programs
Registered as a Dynamic Link Library File
This program is often downloaded from the web
Created as a new Background Service on the machine
Deleted as a process from disk

Country Of Origin

The filename COMP.EXE was first seen on Sep 15 2007 in the following geographical regions of the Webroot community:

Europe on Sep 15 2007
The United States on Sep 25 2007
Spain on Apr 23 2009
on Apr 23 2009
Moldova, Republic of on Dec 19 2009
Brazil on May 12 2010
Thailand on May 22 2012

Filesizes

The following file size has been seen:

15,872 bytes
8,704 bytes
162,304 bytes
846,428 bytes
22,841,111 bytes
613,800 bytes
27,136 bytes

File Type

The filename COMP.EXE is used by multiple object types including objects,executable programs.

File Activity

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

Creates c:\windows\system32\magnify.ivr
Copies filec:\windows\system32\magnify.ivr to c:\windows\system32\magnify.exe
Deletes c:\windows\system32\magnify.ivr
Creates c:\windows\system32\narrator.ivr
Copies filec:\windows\system32\narrator.ivr to c:\windows\system32\narrator.exe
Deletes c:\windows\system32\narrator.ivr
Creates c:\windows\system32\osk.ivr
Copies filec:\windows\system32\osk.ivr to c:\windows\system32\osk.exe
Deletes c:\windows\system32\osk.ivr
Creates c:\windows\system32\utilman.ivr
Copies filec:\windows\system32\utilman.ivr to c:\windows\system32\utilman.exe
Deletes c:\windows\system32\utilman.ivr
Creates c:\program files\outlook express\wab.ivr
Copies filec:\program files\outlook express\wab.ivr to c:\program files\outlook express\wab.exe
Deletes c:\program files\outlook express\wab.ivr
Creates c:\program files\windows media player\wmplayer.ivr
Copies filec:\program files\windows media player\wmplayer.ivr to c:\program files\windows media player\wmplayer.exe
Deletes c:\program files\windows media player\wmplayer.ivr
Creates c:\windows\system32\notepad.ivr
Copies filec:\windows\system32\notepad.ivr to c:\windows\system32\notepad.exe
Deletes c:\windows\system32\notepad.ivr
Creates c:\windows\system32\mobsync.ivr
Copies filec:\windows\system32\mobsync.ivr to c:\windows\system32\mobsync.exe
Deletes c:\windows\system32\mobsync.ivr
Creates c:\windows\system32\tourstart.ivr
Copies filec:\windows\system32\tourstart.ivr to c:\windows\system32\tourstart.exe
Deletes c:\windows\system32\tourstart.ivr
Creates c:\windows\system32\rcimlby.ivr
Copies filec:\windows\system32\rcimlby.ivr to c:\windows\system32\rcimlby.exe
Deletes c:\windows\system32\rcimlby.ivr
Deletes c:\documents and settings\jim\cookies\index.dat
Deletes c:\documents and settings\jim\cookies\jim@adobe[1].txt
Deletes c:\documents and settings\jim\cookies\jim@auto.sea
Deletes c:\documents and settings\jim\cookies\jim@c.msn
Deletes c:\documents and settings\jim\cookies\jim@doubleclick[1].txt
Deletes c:\documents and settings\jim\cookies\jim@download.moz
Deletes c:\documents and settings\jim\cookies\jim@genuine[2].txt
Deletes c:\documents and settings\jim\cookies\jim@google[2].txt
Deletes c:\documents and settings\jim\cookies\jim@live[1].txt
Deletes c:\documents and settings\jim\cookies\jim@m.web
Deletes c:\documents and settings\jim\cookies\jim@microsoftwga.112
Deletes c:\documents and settings\jim\cookies\jim@microsoft[2].txt
Deletes c:\documents and settings\jim\cookies\jim@mozilla[2].txt
Deletes c:\documents and settings\jim\cookies\jim@msn[1].txt
Deletes c:\documents and settings\jim\cookies\jim@search.liv
Deletes c:\documents and settings\jim\cookies\jim@search.msn
Deletes c:\documents and settings\jim\cookies\jim@snapfiles[2].txt
Deletes c:\documents and settings\jim\cookies\jim@sourceforge[2].txt
Deletes c:\documents and settings\jim\cookies\jim@tt11.ado
Deletes c:\documents and settings\jim\cookies\jim@winkeyfinder[2].txt

Help the Webroot Community to fight cyber crime

We are always looking for ways to improve the quality and speed of research to help us protect you from malicious software and cyber crime.

The filename referred to in this report is often associated with PC infections. If you have a program of this name on your PC and would like to help our research please tell us what you know in the form below:

I have this file on my PC and believe it is an infection
I have this file on my PC and think it has made my PC slower
My firewall asked if I wanted to let this file have access to the Internet
My PC will not work since I noticed this file on it
My antivirus detected this file but won't remove it
I know what this file is and believe it is a Safe program
I am the author of this file and would like to discuss how to have it reclassified as safe

Further Comments or information you'd like to share: (optional)

Your email address if you would like us to contact you about this file and any concerns you may have: (optional)

PCMag.com Editors' Choice Award Logo is a trademark of Ziff Davis Publishing Holdings Inc. Used under license.

COMP.EXE