Classification

Category :

Malware

Type :

-

Aliases :

Bropia.J, IM-Worm.Win32.Bropia.j

Summary

Bropia.J is a minor variant of Bropia.G worm. Like the previous variants, it uses MSN messenger for spreading. It also drops a variant of Rbot on the infected system.

Removal

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note: You need administrative rights to change the settings.

Technical Details

When run, the worm checks for files

win32s.exe
winis.exe
svchosts.exe
iexplore.exe
 

This check is made to prevent the worm for installing it again on infected system.If the files are not found, it drops file "exe.exe" and executes it. This file is a variant of Rbot. The bot can be used as a backdoor, collecting system information, logging keystrokes, relaying spam and for various other purposes.Brobia.J also drops a file "pic.jpg" and opens it. On default installation of Windows, the program associated with jpg-extension is usually Internet Explorer. The picture presents a woman in light clothing.

MSN spreading

The worm attempts to send one of the following messages to MSN Messenger contacts:

LOOK!   :-O  paris hilton got hacked!!  :D  Huge Turd hahaah!   :P  nice!  :P  ownage!  :D   

Where <URL to worm> is a http-link to worm's file. Possible file names in the URLs are

LOOK!
 :-O
paris hilton got hacked!!
:D
Huge Turd hahaah!
 :P
nice!
:P
ownage!
:D
 

The links are static addresses. At the time of this writing, the files has been removed from the servers.