Submit malware samples via antivirus support/labs email. Please note that some of these email may require special condition such as attachment with password, email subject, etc. Find their website and refer to their documentation.

AegisLab			support@aegislab.com
Agnitum				trojans@agnitum.com
AhnLab				v3sos@ahnlab.com
Antiy				submit@antiy.com
Ashampoo			Use BitDefender engine
Auslogics			Use BitDefender engine
Avast				virus@avast.com
AVG					virus@avg.com
Avira				virus@avira.com
Baidu				bav@baidu.com
BitDefender			virus_submission@bitdefender.com
Bkav				bkav@bkav.com.vn
BullGuard			Use BitDefender engine
ByteFence			fp@bytefence.com
ClamAV				clamavteam@sourcefire.com
Comodo				falsepositive@avlab.comodo.com
Dr. Web				vms@drweb.com
Emsisoft			fp@emsisoft.com
eSafe				support@safenet-inc.com
ESET				samples@eset.com
eScan				fp@escanav.com
Fortinet			submitvirus@fortinet.com
F-Prot				viruslab@f-prot.com
F-Secure			vsamples@f-secure.com
G Data				N/A
herdProtect			falsepositive@herdprotect.com
Hitman Pro			Use BitDefender, Kaspersky, Emsisoft engine
Ikarus				probe@ikarus.at
Immunet				support@immunet.com
Jiangmin			support@jiangmin.com
K7					reportfp@k7computing.com
Kaspersky			newvirus@kaspersky.com
Lavasoft Ad-Aware 	research@lavasoft.com
Malwarebytes		N/A
McAfee				virus_research@mcafee.com
Microsoft SE		avsubmit@submit.microsoft.com
Nano Antivirus		false@nanoav.ru
Norman				falsepositive@norman.no
nProtect			virus_info@inca.co.kr
Panda				falsepositives@pandasecurity.com
Preventon			sample@preventon.com
Qihoo				kefu@360.cn
Quick Heal			viruslab@quickheal.com
Reason Core Security	falsepositive@reasoncoresecurity.com
Rising				N/A
Sophos				samples@sophos.com
Spybot				detections@spybot.info
SuperAntiSpyware	N/A
Symantec			avsubmit@symantec.com
The Hacker			soporte@hacksoft.com.pe
Total Defense		virus@ca.com
Trend Micro			trendlabs@av-emea.com (with password zip: virus)
TrojanHunter		support@trojanhunter.com
Trojan Remover		support@simplysup.com
TrustPort			support@trustport.com
Twister				virus@filseclab.com
UnThreat			Use VIPRE engine
VBA32				feedback@anti-virus.by
VIPRE				malware-cruncher@sunbelt-software.com
ViRobot				viruslab@hauri.co.kr
VIRUSfighter		Use Sophos engine
Webroot				esupport@webroot.com
Zemana				Use Emsisoft, G Data, Ikarus, or Dr. Web engine
Zillya				antivirus@zillya.com
ZoneAlarm			Use Kaspersky engine