Trusted DesignBack in February 2014, ESET researchers wrote a blog post about an OpenSSH backdoor and credential stealer called Linux/Ebury. Further research showed that this component was the core of an operation involving multiple malware families we called “Operation Windigo”. This led to the publication of a whitepaper covering the full operation. In February 2017, we found a new Ebury sample, that introduces a significant number of new features. The version number was bumped to 1.6.2a. At the time of that discovery, the latest versions we had seen were 1.5.x, months before. After further investigation, we realized that its infrastructure for exfiltrating credentials was still operational and that Ebury was still being actively used by the Windigo gang.
Created: 2026-02-23
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