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Threat IntelligenceSep 22, 2026

New ClosedQuorum Windows malware uses AI for attack decisions

New Windows malware ClosedQuorum uses AI models for autonomous attack decisions.

A new Go-based Windows malware named ClosedQuorum is leveraging multiple AI models, including Google Gemini, DeepSeek, Qwen, and Mistral AI, to autonomously make post-compromise attack decisions without human intervention. The malware uses a voting system among the AI models to determine actions such as credential dumping, data exfiltration via Discord webhooks, and persistence. While not confirmed in the wild, its architecture represents a significant shift towards automated attack chains.

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The lesson from this incident

Full lesson

ClosedQuorum represents a dangerous evolution in malware design, using a consensus voting system across multiple AI models to autonomously decide on credential dumping, data exfiltration, and persistence — all without requiring a human attacker to issue commands. This architecture dramatically compresses the attacker's decision loop, meaning defenders have far less time to detect and respond before significant damage is done. The use of legitimate AI APIs and platforms like Discord as exfiltration channels allows the malware to blend into normal network traffic, making detection significantly harder. This matters because traditional signature-based defenses and human-speed incident response processes will increasingly struggle against fully automated, adaptive attack chains.

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Indicators of Compromise

Extracted by AI from the linked source. Not reviewed by an editor. How this works

  • malware — ClosedQuorum

Entities

Gemini (product)DeepSeek (product)Qwen (product)Mistral (product)Chrome (product)Edge (product)