Muchas veces contamos con archivos que sospechamos de ser malware, aunque nuestra herramienta habitual no ha detectado nada sospechoso en ello. Quizás el siguiente paso lógico es utilizar un multiescaneador online como VirusTotal o NoVirusThanks para salir de dudas.

Finalmente contaremos con una muestra sospechosa, que podremos enviar a los laboratorios de análisis que queramos para que sea examinada, y en caso de confirmarse el peligro, pueda ser actualizada la base de datos del producto.

Personalmente, tengo una lista de distribución en mi email, a la que envío todo el contenido que con indicios de sospecha, y que no ha sido detectado. Mi lista la forman todos los fabricantes que ofrecen gratuitos, pues creo que de esa manera puedo retornarles el favor que nos hacen.

En todo caso, para que puedas hacer lo mismo, aquí te dejo una lista que he ido recopilando a lo largo del tiempo:

Ahnlab: v3sos(ARROBA)ahnlab.com, e-support(ARROBA)ahnlab.com, http://global.ahnlab.com/global/virusreport_main.ESD
ANSAV: http://www.ansav.com/download/
Antiy: ghostbusters(ARROBA)antiy.net
ArcaBit: virus(ARROBA)arcabit.com
Avast: virus(ARROBA)avast.com
AVG: virus(ARROBA)grisoft.cz
Avira: virus(ARROBA)avira.com, heuristik2(ARROBA)avira.com (gen/heur fp), http://analysis.avira.com/samples/
AVLab-UA: newvirus(ARROBA)avlab-ua.com, http://www.avlab-ua.com/component/optio … 2/lang,ru/, http://www.avlab-ua.com/component/optio … 3/lang,ru/
BitDefender: virus_submission(ARROBA)bitdefender.com, http://forum.bitdefender.com/index.php?showtopic=12086
BKAV: bkav(ARROBA)bkav.com.vn
BullGuard: support(ARROBA)bullguard.com
ByteHero: support(ARROBA)bytehero.com
CA: virus(ARROBA)ca.com http://home3.ca.com/Support/VirusSampleForm.aspx
ClamAV: http://cgi.clamav.net/sendvirus.cgi
CMC: support.is(ARROBA)cmclab.net, contact(ARROBA)cmcinfosec.com
Command: virus(ARROBA)authentium.com, http://www.authentium.com/threatmatrix/ … ample.html
Comodo: malwaresubmit(ARROBA)avlab.comodo.com, falsepositive(ARROBA)avlab.comodo.com, http://internetsecurity.comodo.com/submit.php
Dr.Web: vms(ARROBA)drweb.com, http://vms.drweb.com/sendvirus
eAcceleration: http://research.eacceleration.com/submit_sample/
eEye: malware(ARROBA)eeye.com
EmsiSoft: submit(ARROBA)emsisoft.com
eSafe: esafe.virus(ARROBA)eAladdin.com, virus(ARROBA)esafe.com
ESET: samples(ARROBA)eset.com
Filseclab: virus(ARROBA)filseclab.com, support-global(ARROBA)filseclab.com
FireAV: service(ARROBA)fireav.com
Fortinet: submitvirus(ARROBA)fortinet.com
F-Prot: viruslab(ARROBA)f-prot.com, http://www.f-prot.com/virusinfo/submission_form.html
F-Secure: samples(ARROBA)f-secure.com, vsamples(ARROBA)f-secure.com, https://analysis.f-secure.com/
Gdata: http://www.gdatasoftware.com/support.html
Greatis: support(ARROBA)greatis.com
Hacksoft: virus(ARROBA)hacksoft.com.pe
Hauri: hauri98(ARROBA)hauri.co.kr, http://www.hauri.net/support/virus_report.html, http://www.hauri.net/support/false_report.html (fp)
Hazard Shield: andy(ARROBA)orbitech.org
Ikarus: analyse(ARROBA)ikarus.at, http://www.ikarus-software.at/cgi-bin/s … bmit=more+
Immunet: http://www.immunet.com/contact
Iobit Security 360: is360submit(ARROBA)iobit.com, http://db.iobit.com/deal/sdsubmit/index.php
Iolo: support-crm(ARROBA)iolo.com, http://www.iolo.com/customercare/technicalsupport.aspx
Jiangmin: virus(ARROBA)jiangmin.com, support(ARROBA)jiangmin.com
K7 Computing: k7viruslab(ARROBA)k7computing.com
Kaspersky: newvirus(ARROBA)kaspersky.com
Kingsoft: support(ARROBA)kingsoftresearch.com
Lavasoft: research(ARROBA)lavasoft.com, http://upload.lavasoft.com/upload/submit_file.php
Malwarebytes: http://uploads.malwarebytes.org
McAfee: vsample(ARROBA)avertlabs.com, virus_research(ARROBA)avertlabs.com, spyware_research(ARROBA)avertlabs.com
Micropoint: virus(ARROBA)micropoint.com.cn, support(ARROBA)micropoint.cn
Microsoft: avsubmit(ARROBA)submit.microsoft.com, windefend(ARROBA)submit.microsoft.com, mfcs(ARROBA)submit.microsoft.com, https://www.microsoft.com/security/portal/submit.aspx
Microworld: support(ARROBA)mwti.net
MKS-Vir: virus(ARROBA)mks.com.pl, pomoc(ARROBA)mks.com.pl, http://www.mks.com.pl/pomoc/wyslij_zarazony_plik
Moonsecure: http://www.moonsecure.com/vsubmit.php
MyFreeAntivirus: http://smartpctools.com/support.html
Nemesis: support(ARROBA)usec.at
Net Protector: service(ARROBA)indiaantivirus.com, http://indiaantivirus.com/virussample.html
Netgate: research(ARROBA)spy-emergency.com, http://www.spy-emergency.com/content/view/43/58/
Nictasoft: http://www.nictasoft.com/new-virus/
Norman: analysis(ARROBA)norman.no, http://www.norman.com/security_center/s … file/en-us, http://www.norman.com/support/fp/en (fp)
NoVirusThanks: info(ARROBA)novirusthanks.org
nProtect: http://global.nprotect.com/support/contactus.php
Nuwavesoft: support(ARROBA)nuwavesoft.com
Panda: virussamples(ARROBA)pandasoftware.com, virus(ARROBA)pandasoftware.com, virus(ARROBA)pandasecurity.com
ParetoLogic: SWAT(ARROBA)Paretologic.com, http://www.paretologic.com/community/submissions/ (check left sidebar)
PCMAV: redaksi(ARROBA)pcmedia.co.id
PCSecurityShield: customersupport(ARROBA)pcsecurityshield.com
PC DoorGuard: astonsupport(ARROBA)astonsoft.com
PC Tools: http://www.pctools.com/mrc/submit/
Prevx: virus(ARROBA)prevxresearch.com, report(ARROBA)prevxresearch.com (note)
Proland: virsample(ARROBA)pspl.com, http://www.pspl.com/support/samplesubmit.htm
QuickHeal: viruslab(ARROBA)quickheal.com
Rising: master(ARROBA)rising.com.cn, virus(ARROBA)rising.com.cn, http://support.rising-global.com/index. … rtmentid=1
Sophos: samples(ARROBA)sophos.com, http://www.sophos.com/support/samples
Spybot: detections(ARROBA)spybot.info, http://www.safer-networking.org/en/cont … tions.html
Spyware Terminator: http://www.spywareterminator.com/suppor … icket.aspx
Srnmicro: vlab(ARROBA)srnmicro.com
Sunbelt: malware-cruncher(ARROBA)sunbelt-software.com, spywarereport(ARROBA)sunbelt-software.com, http://www.sunbeltsecurity.com/Submit.a … 0825C756EA, http://www.sunbeltsecurity.com/Submit.a … 8BFF85EB45 (fp)
Superantispyware: samples(ARROBA)superantispyware.com
Sybari: submit_virus(ARROBA)research.sybari.com, AntSupUS(ARROBA)microsoft.com, http://www.sybari.com/portal/alias__Rai … fault.aspx
Symantec: avsubmit(ARROBA)symantec.com, https://submit.symantec.com/websubmit/retail.cgi, https://submit.symantec.com/dispute/false_positive (fp)
The Cleaner: trojans(ARROBA)moosoft.com, http://www.moosoft.com/TheCleaner/WebSubmit
TheStubware: support(ARROBA)thestubware.com
TrendMicro: virus_doctor(ARROBA)trendmicro.com, http://subwiz.trendmicro.com/SubWiz/Default.asp
Trojan Hunter: submit(ARROBA)misec.net, submit(ARROBA)trojanhunter.com
Trojan Remover: submit(ARROBA)simplysup.com
Trustport: support(ARROBA)trustport.com
UNA: newvirus(ARROBA)unasoft.com.ua
UploadMalware: http://www.uploadmalware.com
VBA32: newvirus(ARROBA)anti-virus.by
Vexira: virus(ARROBA)centralcommand.com, virus_submission(ARROBA)centralcommand.com, http://support.vexira.com/index.php?_m= … ;_a=submit
Vir.it: assistenza(ARROBA)viritpro.com
VirusBuster: virus(ARROBA)virusbuster.hu, https://support.virusbuster.hu/index.php?_m=tickets&_a=submit
Virus Chaser: inquiry(ARROBA)viruschaser.com.hk, http://www.viruschaser.hk/e_contact.php
Webroot: submissions(ARROBA)webroot.com, http://www.webroot.com/En_US/about-vendorcomplaint.html (fp)
Websense: submit(ARROBA)websensesecuritylabs.com, http://securitylabs.websense.com/conten … cious.aspx
Zonelabs: malware(ARROBA)zonelabs.com