W32/Virut.a!9BFCFE19

Overview

This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then further propagate the virus. Although many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.

Minimum DAT

5327 (2008-06-27)

Updated DAT

5327 (2008-06-27)

Minimum Engine

5.2.00

File Length

46197

Description Added

2008-06-30

Description Modified

2008-06-30

Malware Proliferation

Characteristics

File Property	Property Value
File Name	vil_139473_virut.a_ggwppfkv.exe
McAfee Detection	W32/Virut.a
Length	46,197 bytes
CRC32	9BFCFE19
MD5	e0a73d7f4ccfcae9b28bcd799eca2bd1
SHA1	2642FE89D9A338E06858B4B8143CA5FF6D7CF170

Other Common Detection Aliases

Company Name	Detection Name
AVG (GriSoft)	win32/virut.a
Microsoft	virus:win32/virut.a
Norman	w32/virut.a
Panda	W32/Virutas.B
Sophos	W32/Virut-T
Symantec	Trojan.Tooso.R
Trend Micro	PE_VIRUT.A

Avert® Labs has observed the following system activities:

Activity	Risk Level
Modifies Memory of Other Processes	High
Enumerates running Processes	Medium
Sends e-mails using SMTP	Medium
Creates Registry Keys and Data values persistent on OS Reboot	Low
Writes Executable in the Windows Folder	Low
Program often suspends itself	Informational

Other detections that have been observed.

File Name	McAfee Supported
c:\documents and settings\administrator\application data\hidn\hidn2.exe	W32/Virut.a

This sample can be identified by the following symptoms.

System Changes

These are general defaults for typical path variables. (Although they may differ, these examples are common.):
%WinDir% = \WINDOWS (Windows 9x/ME/XP/Vista), \WINNT (Windows NT/2000)
%SystemDir% = \WINDOWS\SYSTEM (Windows 98/ME), \WINDOWS\SYSTEM32 (Windows XP/Vista), \WINNT\SYSTEM32 (Windows NT/2000)
%ProgramFiles% = \Program Files

The following files have been added to the system:

%USERPROFILE%\application data\hidn

%USERPROFILE%\application data\hidn\hidn2.exe

%USERPROFILE%\application data\hidn\hldrrr.exe

%WINDIR%\system32\re_file.exe

The following registry elements have been created:

HKEY_CURRENT_USER\software\firstrun\

firstrun = 1

The following registry elements have been changed:

HKEY_CURRENT_USER\sessioninformation\

programcount = 2

HKEY_CURRENT_USER\software\microsoft\windows\currentversion\run\

drv_st_key = c:\documents and settings\administrator\application data
\hidn\hidn2.exe

HKEY_LOCAL_MACHINE\system\currentcontrolset\services\wuauserv\

start = 4

The applications created the following network connection(s):

%DNSSERVER% port (53) Protocol (irc)

\Device\RasAcd:knickimbit.de

5050clothing.com port (80) Protocol (http)

hxxp://5050clothing.com /********

axelero.hu port (80) Protocol (http)

hxxp://axelero.hu /********

calamarco.com port (80) Protocol (http)

hxxp://calamarco.com /********

ceramax.co.kr port (80) Protocol (http)

hxxp://ceramax.co.kr /********

charlesspaans.com port (80) Protocol (http)

hxxp://charlesspaans.com /********

chatsk.wz.cz port (80) Protocol (http)

hxxp://chatsk.wz.cz /********

checkalertusa.com port (80) Protocol (http)

hxxp://checkalertusa.com /********

cibernegocios.com.ar port (80) Protocol (http)

hxxp://cibernegocios.com.ar /********

cof666.shockonline.net port (80) Protocol (http)

hxxp://cof666.shockonline.net /********

comaxtechnologies.net port (80) Protocol (http)

hxxp://comaxtechnologies.net /********

concellodesandias.com port (80) Protocol (http)

hxxp://concellodesandias.com /********

dev.jintek.com port (80) Protocol (http)

hxxp://dev.jintek.com /********

dogoodesign.ch port (80) Protocol (http)

hxxp://dogoodesign.ch /********

donchef.com port (80) Protocol (http)

hxxp://donchef.com /********

erich-kaestner-schule-donaueschingen.de port (80) Protocol (http)

hxxp://erich-kaestner-schule-donaueschingen.de /********

foxvcoin.com port (80) Protocol (http)

hxxp://foxvcoin.com /********

grupdogus.de port (80) Protocol (http)

hxxp://grupdogus.de /********

hotchillishop.de port (80) Protocol (http)

hxxp://hotchillishop.de /********

ilikesimple.com port (80) Protocol (http)

hxxp://ilikesimple.com /********

innovation.ojom.net port (80) Protocol (http)

hxxp://innovation.ojom.net /********

kisalfold.com port (80) Protocol (http)

hxxp://kisalfold.com /********

knickimbit.de port (80) Protocol (http)

hxxp://knickimbit.de /********

kremz.ru port (80) Protocol (http)

hxxp://kremz.ru /********

massgroup.de port (80) Protocol (http)

hxxp://massgroup.de /********

poliklinika-vajnorska.sk port (80) Protocol (http)

hxxp://poliklinika-vajnorska.sk /********

prime.gushi.org port (80) Protocol (http)

hxxp://prime.gushi.org /********

proxima.ircgalaxy.pl port (65520) Protocol (irc)

NICK zvcpsbyo USER k020501 . . :_
NICK zvcpsbyo USER k020501 . . :_ JOIN &virtu

svatba.viskot.cz port (80) Protocol (http)

hxxp://svatba.viskot.cz /********

systemforex.de port (80) Protocol (http)

hxxp://systemforex.de /********

uwua132.org port (80) Protocol (http)

hxxp://uwua132.org /********

vanvakfi.com port (80) Protocol (http)

hxxp://vanvakfi.com /********

vega-sps.com port (80) Protocol (http)

hxxp://vega-sps.com /********

vidus.ru port (80) Protocol (http)

hxxp://vidus.ru /********

viralstrategies.com port (80) Protocol (http)

hxxp://viralstrategies.com /********

vivamodelhobby.com port (80) Protocol (http)

hxxp://vivamodelhobby.com /********

vkinfotech.com port (80) Protocol (http)

hxxp://vkinfotech.com /********

vproinc.com port (80) Protocol (http)

hxxp://vproinc.com /********

v-v-kopretiny.ic.cz port (80) Protocol (http)

hxxp://v-v-kopretiny.ic.cz /********

vytukas.com port (80) Protocol (http)

hxxp://vytukas.com /********

waisenhaus-kenya.ch port (80) Protocol (http)

hxxp://waisenhaus-kenya.ch /********

watsrisuphan.org port (80) Protocol (http)

hxxp://watsrisuphan.org /********

wbecanada.com port (80) Protocol (http)

hxxp://wbecanada.com /********

web-comp.hu port (80) Protocol (http)

hxxp://web-comp.hu /********

webfull.com port (80) Protocol (http)

hxxp://webfull.com /********

welvo.com port (80) Protocol (http)

hxxp://welvo.com /********

wvpilots.org port (80) Protocol (http)

hxxp://wvpilots.org /********

www.ag.ohio-state.edu port (80) Protocol (http)

hxxp://www.ag.ohio-state.edu /********

www.chapisteriadaniel.com port (80) Protocol (http)

hxxp://www.chapisteriadaniel.com /********

www.chittychat.com port (80) Protocol (http)

hxxp://www.chittychat.com /********

www.cort.ru port (80) Protocol (http)

hxxp://www.cort.ru /********

www.crfj.com port (80) Protocol (http)

hxxp://www.crfj.com /********

www.kersten.de port (80) Protocol (http)

hxxp://www.kersten.de /********

www.kljbwadersloh.de port (80) Protocol (http)

hxxp://www.kljbwadersloh.de /********

www.voov.de port (80) Protocol (http)

hxxp://www.voov.de /********

www.walsch.de port (80) Protocol (http)

hxxp://www.walsch.de /********

www.wchat.cz port (80) Protocol (http)

hxxp://www.wchat.cz /********

www.wg-aufbau-bautzen.de port (80) Protocol (http)

hxxp://www.wg-aufbau-bautzen.de /********

www.wzhuate.com port (80) Protocol (http)

hxxp://www.wzhuate.com /********

xotravel.ru port (80) Protocol (http)

hxxp://xotravel.ru /********

yeniguntugla.com port (80) Protocol (http)

hxxp://yeniguntugla.com /********

zebrachina.net port (80) Protocol (http)

hxxp://zebrachina.net /********

zsnabreznaknm.sk port (80) Protocol (http)

hxxp://zsnabreznaknm.sk /********

E-mails Sent:

Server: (Varies, the following has been observed)

Connects to domains such as: [172.16.198.100]

From: (Varies, the following has been observed)

Spoofs email addresses such as: administrator@goat.com> SIZE=60381

To: (Varies, the following has been observed)

Carries its own list of destination email Addresses such as: user195781@gmail.com

Sender Name: (Varies, the following has been observed)

Carries its own list of originator email addresses

Subject: (Varies, the following has been observed)

price_ 06-Aug-2007

Symptoms

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Method of Infection

Viruses are self-replicating. They are often spread by a network or by transmission to a removable medium such as a removable disk, writable CD, or USB drive. Viruses may also spread by infecting files on a network file system or a file system that is shared by another computer.

Removal

All Users:

Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:

1.Disable System Restore .

2.Update to current engine and DAT files for detection and removal.

3.Run a complete system scan.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

1. Please go to the Microsoft Recovery Console and restore a clean MBR.

On windows XP:

Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.

On Windows Vista and 7:

Insert the Windows CD into the CD-ROM drive and restart the computer.
Click on "Repair Your Computer"
When the System Recovery Options dialog comes up, choose the Command Prompt.
Issue 'bootrec /fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.

Threat Detail