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MalwareNov 13, 2026

Gootloader Malware Disrupted After Infecting 25,000 Computers

Gootloader malware operation disrupted, 100+ servers seized, 25,000 computers affected.

International law enforcement has disrupted the Gootloader malware operation, seizing over 100 servers and U.S. domain names used for control and delivery. Since 2018, Gootloader has infected approximately 25,000 computers globally, often spreading through compromised websites. The malware operates on an access-as-a-service model, selling access to ransomware groups, and has been linked to ransomware attacks causing an estimated $28.8 million in losses to at least 44 U.S. victims.

AI summary of the linked source. Not reviewed by an editor. How this works

The lesson from this incident

Full lesson

Gootloader spread primarily through compromised legitimate websites, tricking users into downloading malicious files—a technique that succeeds when users lack awareness of web-based malware delivery. Operating as an access-as-a-service broker, it lowered the barrier for ransomware groups to launch attacks, amplifying harm far beyond the initial infection. Over six years and 25,000 infections, the operation caused an estimated $28.8 million in losses before law enforcement intervened. This case underscores how malware ecosystems that commoditize initial access can persist and scale when defenders fail to detect infections early or block malicious download behavior. Timely endpoint detection, user education about suspicious downloads, and proactive vulnerability management of web-facing assets are critical defenses.

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Indicators of Compromise

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

  • malware — REvil
  • malware — Sodinokibi
  • malware — Gootloader
  • malware — GootKit
  • malware — SunCrypt
  • malware — Kronos
  • malware — Cobalt Strike

Entities

UNC2565 (threat_actor)