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#7 The Record threat-intel May 07, 2026 at 21:30 UTC

Iranian government hackers using Chaos ransomware as cover, researchers say

AI Summary

Rapid7 incident responders uncovered that a ransomware attack initially attributed to Chaos ransomware was actually an intrusion by MuddyWater, an Iranian APT group tied to Iran's Ministry of Intelligence and Security (MOIS). The use of ransomware as operational cover marks a deceptive TTPs evolution for this threat actor, complicating attribution and incident response triage. Defenders encountering Chaos ransomware artifacts should consider nation-state involvement as part of their analysis.

Relevance score: 80.0/100

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