病毒行为：
这是一个修改HOSTS文件的木马病毒。该病毒的主要危害是将改变HOSTS文件中IP地址与网址的映射。Windows系统在接受用户的访问某个网址的请求之前，它会先检查%System%\drivers\etc\hosts文件，如果找到了这个网址的映射IP地址，就会转向这个IP地址。这样就可能导致以下危害：
1.无法访问某些反病毒公司的升级网址，导致无法正常升级反病毒软件的病毒库。
2.将某些常用网址映射到病毒网址，使用户感染新病毒。
3.对某些网站发动DoS（拒绝服务）攻击；
4.增加某些网站的访问量以达到病毒制作者某种营利的目的。

将%System%\drivers\etc\hosts文件替换为以下内容：

# Try2Update 1.2 by libere_ton_espri
# www.Try2Kod.Tk

127.0.0.1 localhost
127.0.0.1 http://downloads4.kaspersky-labs.com
127.0.0.1 http://downloads3.kaspersky-labs.com
127.0.0.1 http://downloads2.kaspersky-labs.com
127.0.0.1 http://downloads1.kaspersky-labs.com
127.0.0.1 ftp://downloads4.kaspersky-labs.com
127.0.0.1 ftp://downloads3.kaspersky-labs.com
127.0.0.1 ftp://downloads2.kaspersky-labs.com
127.0.0.1 ftp://downloads1.kaspersky-labs.com
127.0.0.1 downloads-us1.kaspersky-labs.com
127.0.0.1 rads.mcafee.com
127.0.0.1 http://www.secuser.com
127.0.0.1 a188.x.akamai.net
127.0.0.1 liveupdate.symantecliveupdate.com
127.0.0.1 liveupdate.symantec.com
127.0.0.1 liveupdate.symantec.d4p.net
127.0.0.1 update.symantec.com
127.0.0.1 ftp.nai.com
127.0.0.1 www.grisoft.cz
127.0.0.1 www.grisoft.com
127.0.0.1 free.grisoft.cz
127.0.0.1 tds.diamondcs.com.au
127.0.0.1 ieupdate.gdata.de
127.0.0.1 ieupdate6.gdata.de
127.0.0.1 ieupdate5.gdata.de
127.0.0.1 ieupdate4.gdata.de
127.0.0.1 ieupdate3.gdata.de
127.0.0.1 ieupdate2.gdata.de
127.0.0.1 ieupdate1.gdata.de
127.0.0.1 www.iavs.cz
127.0.0.1 download7.avast.com
127.0.0.1 download6.avast.com
127.0.0.1 download5.avast.com
127.0.0.1 download4.avast.com
127.0.0.1 download3.avast.com
127.0.0.1 download2.avast.com
127.0.0.1 download1.avast.com
127.0.0.1 upgrade.bitdefender.com
127.0.0.1 windowsupdate.microsoft.com
127.0.0.1 www.lavasoftusa.com
127.0.0.1 www.a-2.org
127.0.0.1 updates.a-2.org
127.0.0.1 niuone.norman.no
127.0.0.1 www.diamondcs.com.au
127.0.0.1 www.attechnical.com
127.0.0.1 www.zeylstra.nl
127.0.0.1 fractus.mat.uson.mx
127.0.0.1 www.toonbox.de
127.0.0.1 radius.turvamies.com
127.0.0.1 diamondcs.fileburst.com
127.0.0.1 downloads.My-eTrust.com
127.0.0.1 acs.pandasoftware.com
127.0.0.1 v4.windowsupdate.microsoft.com
127.0.0.1 v5.windowsupdate.microsoft.com
127.0.0.1 www.NoAdware.net
127.0.0.1 www.nod32.com
127.0.0.1 www.eset.sk
127.0.0.1 avu.zonelabs.com
127.0.0.1 retail.sp.f-secure.com
127.0.0.1 retail01.sp.f-secure.com
127.0.0.1 retail02.sp.f-secure.com
127.0.0.1 www.moosoft.com
127.0.0.1 secuser.model-fx.com
127.0.0.1 secuser.com
127.0.0.1 downloads-eu1.kaspersky-labs.com
127.0.0.1 downloads2.kaspersky-labs.com
127.0.0.1 downloads4.kaspersky-labs.com
127.0.0.1 downloads1.kaspersky-labs.com
127.0.0.1 pccreg.antivirus.com
127.0.0.1 dl1.antivir.de
127.0.0.1 dl2.antivir.de
127.0.0.1 dl3.antivir.de
127.0.0.1 dl4.antivir.de
193.125.23.12 updates.sald.com
127.0.0.1 secuser.model-fx.com
127.0.0.1 secuser.com
127.0.0.1 www.secuser.com
127.0.0.1 www.k-otik.com
127.0.0.1 www.megasecurity.org
127.0.0.1 www.symantec.com
127.0.0.1 housecall.trendmicro.com
127.0.0.1 www.trendmicro.com
127.0.0.1 fr.mcafee.com
127.0.0.1 mcafee.com
127.0.0.1 antivirus.cai.com
127.0.0.1 www.pandasoftware.com
127.0.0.1 www.sophos.com
127.0.0.1 www.securitoo.com
127.0.0.1 www.Kaspersky-FR.com
127.0.0.1 www.Kaspersky.com
127.0.0.1 my-etrust.com
127.0.0.1 www.avgfrance.com
127.0.0.1 www.antivirus-online.de
127.0.0.1 www.gietl.com/test-clamav/
127.0.0.1 ftp.esafe.com
127.0.0.1 ftp.microworldsystems.com
127.0.0.1 ftp.europe.f-secure.com
127.0.0.1 ftp.ca.co
127.0.0.1 ftp.symantec.com
127.0.0.1 files.trendmicro-europe.com
127.0.0.1 akamai.net
127.0.0.1 www.f-secure.com
127.0.0.1 www.inline-software.de
127.0.0.1 www.norman.com
127.0.0.1 www.ravantivirus.com
127.0.0.1 www.f-prot.com
127.0.0.1 www.drsolomon.com
127.0.0.1 www.avast.com
127.0.0.1 www.vsantivirus.com
127.0.0.1 www.openantivirus.org
127.0.0.1 www.bitdefender.com
127.0.0.1 www.pandasoftware.es
127.0.0.1 www3.ca.com
127.0.0.1 us.mcafee.com
127.0.0.1 security.symantec.com
127.0.0.1 www.dialognauka.ru
127.0.0.1 www.viguard.com
127.0.0.1 www.free-av.com
127.0.0.1 www.nod32.lu
127.0.0.1 www.zonelabs.fr
127.0.0.1 www.anti-virus-software-review.com
127.0.0.1 symantec.com
127.0.0.1 www.vet.com.au
127.0.0.1 www.eicar.org
127.0.0.1 www.avp.ch
127.0.0.1 anti-virus.com
127.0.0.1 download.mcafee.com
127.0.0.1 www.bitdefender.fr
127.0.0.1 securityresponse.symantec.com
127.0.0.1 microsoft.fr
127.0.0.1 microsoft.com
127.0.0.1 www.trendmicro.fr
127.0.0.1 fr.bitdefender.com
127.0.0.1 www.sophos.fr
127.0.0.1 www.emsisoft.net/fr
127.0.0.1 www.nsclean.com
127.0.0.1 www.antiviraldp.com
127.0.0.1 www.pestpatrol.com
127.0.0.1 www.agnitum.com
127.0.0.1 www.simplysup.com
127.0.0.1 www.misec.net
127.0.0.1 www.my-etrust.com
127.0.0.1 www.nod32.nl/_en
127.0.0.1 www.centralcommand.com
127.0.0.1 www1.my-etrust.com
127.0.0.1 www.authentium.com
127.0.0.1 www.bitdefender.secyber.net/BITDEFENDER/index.html
127.0.0.1 www.finjan.com
127.0.0.1 www.fmsinc.com/free/utilities/fmsavs10.htm
127.0.0.1 www.psnw.com
127.0.0.1 www.gwava.nl
127.0.0.1 www.gecadsoftware.com
127.0.0.1 www.nai.com
127.0.0.1 www.ikarus-software.at/portal/index.php
127.0.0.1 www.pspl.com
127.0.0.1 www.safetynet.com
127.0.0.1 www.stiller.com
127.0.0.1 www.sybari.com
127.0.0.1 www.viruslist.com
127.0.0.1 www.wildlist.com
127.0.0.1 www.mcaffee.com/anti-virus/virusmap.asp
127.0.0.1 www.mcaffee.com
127.0.0.1 www.blackice.iss.net
127.0.0.1 www.ccsoftware.ca/8signs
127.0.0.1 www.deerfield.com
127.0.0.1 www.kerio.com
127.0.0.1 www.looknstop.com
127.0.0.1 www.mcafee-at-home.com
127.0.0.1 www.sygate.com
127.0.0.1 www.tinysoftware.com
127.0.0.1 www.visualizesoftware.com
127.0.0.1 www.kerio.com
127.0.0.1 www.zonelabs.com
127.0.0.1 www.zonelog.co.uk
127.0.0.1 www.safer-networking.org
127.0.0.1 www.webroot.com
127.0.0.1 www.lavasoft.nu
127.0.0.1 www.spywareguide.com
127.0.0.1 www.aluriasoftware.com
127.0.0.1 www.pestpatrol.com
127.0.0.1 www.spyblocker-software.com
127.0.0.1 www.spycop.com
127.0.0.1 www.spywareguide.com
127.0.0.1 www.javacoolsoftware.com
127.0.0.1 www.wilderssecurity.net
127.0.0.1 www.trapware.com
127.0.0.1 www.winpatrol.com
127.0.0.1 www.liutilities.com
127.0.0.1 www.x-cleaner.com
127.0.0.1 avp.com
127.0.0.1 ca.com
127.0.0.1 shop.symantec.com
127.0.0.1 dispatch.mcafee.com/us
127.0.0.1 f-secure.com
127.0.0.1 kaspersky.com
127.0.0.1 mast.mcafee.com
127.0.0.1 nai.com/us/index.asp
127.0.0.1 networkassociates.com
127.0.0.1 secure.nai.com/us/index.asp
127.0.0.1 sophos.com
127.0.0.1 www.kaspersky.co.uk
127.0.0.1 kaspersky.co.uk
127.0.0.1 www.housecall.com
127.0.0.1 housecall.com