
Notably, the campaign exploited the popular C++ library ensmallen, as well as packages in the computational biology, bioinformatics, and genotype-phenotype analysis ecosystems.
The most novel thing about this malware is its combination of advanced tactics, noted David Shipley of Beauceron Security. He noted that we’ve seen memory-focused malware, we’ve seen attacks that attempt to defuse large language model (LLM) powered analysis with hidden prompts, and we’ve seen malware with wiper capabilities.
“But all three, in a fast moving mass propagating worm, is its own kind of nightmare,” he said. “And I suspect this is the way of the future.”
How Hades works
The Hades Campaign was discovered by researchers at StepSecurity, who called it the latest evolution of the Miasma threat actor. The researchers previously described Miasma attacks that had sent self-replicating worms to perform multi-cloud credential sweeps, caused infected repositories to execute code when folders were accessed in integrated development environments (IDEs) or by AI agents, and used techniques that scanned and read Linux process memory.

