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Iranian Threat Actor Nimbus Manticore Expands Wartime Cyber Operations with AI-Assisted Malware and SEO Poisoning

Jun 1, 2026 3:01:24 PM / by The Hivemind posted in Threat Bulletin, IRGC cyber operations, Nimbus Manticore, MiniJunk malware, UNC1549, MiniFast malware, AppDomain Hijacking, Iranian cyber threats, aviation cyber threats, SEO poisoning

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Verticals Targeted: Aviation, Defense, Telecommunications, Software Development, Government
Regions Targeted: US, Israel, UAE, Saudi Arabia, Western Europe, Middle East, Africa
Related Threat Actors: Nimbus Manticore
Related Families: MiniJunk, MiniFast

Executive Summary

IRGC-affiliated threat actor Nimbus Manticore significantly expanded its operational capabilities during the ongoing 2026 Middle East conflict, introducing a new backdoor dubbed MiniFast alongside advanced delivery mechanisms including AppDomain Hijacking, scheduled task abuse, and SEO poisoning. The campaign has targeted aviation, software, defense, and telecommunications organizations across the US, Europe, and the Middle East using phishing lures, Trojanized software installers, and stealth-focused persistence techniques designed to blend into legitimate enterprise activity.

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