Analysis of TraderTraitor’s GopherGrabber Malware observed by Willo Campaign

2025-04-22 S2W

https://s2w.inc/en/resource/detail/806

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S2W links the Willo Campaign to TraderTraitor and describes a North Korea-backed phishing operation against cryptocurrency employees, including developers and sales staff. The activity used malicious NPM packages in June 2024, a Versus X-themed installer in July 2024, and LinkedIn job-offer lures from December 2024 that sent victims to a fake Willo video-interview page and prompted them to run malicious commands. The final malware, GopherGrabber, is a Go-based multi-platform backdoor and stealer that communicates with command-and-control servers over HTTP/S using MD5 hashing and RC4-encrypted packets. S2W assesses the campaign as strongly tied to TraderTraitor while noting a weak infrastructure overlap with UNC5221 through an SSL certificate match.

Indicators of Compromise

Type Value First Seen Last Seen
DOMAIN aws.info 2025-04-22 2025-04-22

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