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Detecting Nimbus Manticore and their sideloading infection chains

By Jonathan Peters

Excerpt

During a recent incident, we identified a sophisticated sideloading infection chain dropping a custom implant for data exfiltration. Further analysis allowed us to attribute the activity to the Iran-nexus APT group Nimbus Manticore, also tracked as UNC1549 and Smoke Sandstorm. The group primarily targets aerospace and defense organizations in the Middle East and Europe.

Nimbus Manticore is known for targeted phishing operations and the use of custom implants. While individual payloads and tooling vary in between campaigns, the group’s core tradecraft remains relatively consistent. In this article, we compare implants previously reported by…

The opening of the report, shown for reference. The full report, with its figures and indicators, is published by nextron-systems.com on nextron-systems.com.

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