Butterfly is a group of highly capable, professional attackers who perform corporate
espionage for financial gain. The group compromised several major technology companies in 2013 using a zero-day exploit to drop malware onto victims’ computers. Over the past two years, Symantec has worked closely with the victims and found that Butterfly has since compromised multiple companies in a wide range of sectors.
Symantec provides a detailed analysis of the Butterfly group and the malware tools at its disposal.