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REF5961

REF5961 is a threat actor group, tracked by Brandefense.

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Techniques
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About REF5961.

Elastic's security team has published a report on REF5961, a cyber-espionage group they found on the network of a Foreign Affairs Ministry from a member of the Association of Southeast Asian Nations (ASEAN). Elastic says it found the group's tools next to the malware of another cyber-espionage group it tracks as REF2924. REF5961's arsenal includes malware such as EAGERBEE, RUDEBIRD, and DOWNTOWN.

Last updated Oct 9, 2026. Compiled by Brandefense technologies from structured threat intelligence and reviewed by Brandefense analysts. Techniques follow the MITRE ATT&CK framework.