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From Bing Search to Ransomware: Bumblebee and AdaptixC2 Deliver Akira
June 29, 2026 · DFIR Report · Severity: CRITICAL
This report details a ransomware campaign where Bumblebee and AdaptixC2 deliver Akira through Bing search. The case was initially reported in July 2025 and later shared publicly with Swisscom B2B CSIRT. It includes analysis from two separate intrusions tied to the same campaign.
Key Takeaways
- Bumblebee and AdaptixC2 deliver Akira ransomware via Bing search campaigns.
- This intrusion was first reported in July 2025 with a public flash alert in August.
- Data from two intrusions is analyzed in partnership with Swisscom B2B CSIRT.