Suspected attribution: Iran
Target sectors: Aerospace, energy
Overview: APT33 has targeted organizations, spanning multiple industries, headquartered in the U.S., Saudi Arabia and South Korea. APT33 has shown particular interest in organizations in the aviation sector involved in both military and commercial capacities, as well as organizations in the energy sector with ties to petrochemical production.
Based on observed targeting, we believe APT33 engages in strategic espionage by targeting geographically diverse organizations across multiple industries. Specifically, the targeting of organizations in the aerospace and energy sectors indicates that the threat group is likely in search of strategic intelligence capable of benefitting a government or military sponsor. APT33’s focus on aviation may indicate the group’s desire to gain insight into regional military aviation capabilities to enhance Iran’s aviation capabilities or to support Iran’s military and strategic decision making. Their targeting of multiple holding companies and organizations in the energy sectors align with Iranian national priorities for growth, especially as it relates to increasing petrochemical production. We expect APT33 activity will continue to cover a broad scope of targeted entities, and may spread into other regions and sectors as Iranian interests dictate.
APT33’s use of multiple custom backdoors suggests that they have access to some of their own development resources, with which they can support their operations, while also making use of publicly available tools. The ties to SHAPESHIFT may suggest that APT33 engages in destructive operations or that they share tools or a developer with another Iran-based threat group that conducts destructive operations.
Attack vectors: APT33 sent spear-phishing emails to employees whose jobs related to the aviation industry. These emails included recruitment themed lures and contained links to malicious HTML application (.hta) files. The .hta files contained job descriptions and links to legitimate job postings on popular employment websites that would be relevant to the targeted individuals.
- Blog: APT33 targets Aerospace and Energy Sectors and has Ties to Destructive Malware
- Webinar: Insights into Iranian Cyber Espionage Group