Researchers from the IBM X-Force Incident Response and Intelligence Services (IRIS) team identified a missing link in the operations of a threat actor involved in recent Shamoon malware attacks against Gulf state organizations. These attacks, which occurred in November 2016 and January 2017, reportedly affected thousands of computers across multiple government and civil organizations in Saudi Arabia and elsewhere in Gulf states. Shamoon is designed to destroy computer hard drives by wiping the master boot record (MBR) and data irretrievably, unlike ransomware, which holds the data hostage for a fee.