Fast and Furious - Nimbus Manticore Operations During the Iranian Conflict
The Iranian IRGC-affiliated threat actor Nimbus Manticore launched sophisticated cyber operations during Operation Epic Fury, the US military campaign against Iran beginning February 28, 2026. The campaigns targeted organizations in aviation and software sectors across the United States, Europe, and Middle East using career-themed phishing lures. For the first time, the actor employed SEO poisoning techniques and introduced MiniFast, a previously undocumented backdoor showing signs of AI-assisted development. The operations leveraged AppDomain hijacking and abused legitimate Zoom installer execution flows for malware deployment. The actor demonstrated rapid adaptation capabilities during wartime conditions, maintaining high operational availability while expanding targeting to US-based aviation companies. Multiple campaign waves were observed from February through April 2026, with persistent infrastructure and evolving techniques.
The Iranian IRGC-affiliated threat actor Nimbus Manticore launched sophisticated cyber operations during Operation Epic Fury, the US military campaign against Iran beginning February 28, 2026. The campaigns targeted organizations in aviation and software sectors across the United States, Europe, and Middle East using career-themed phishing lures. For the first time, the actor employed SEO poisoning techniques and introduced MiniFast, a previously undocumented backdoor showing signs of AI-assisted development. The operations leveraged AppDomain hijacking and abused legitimate Zoom installer execution flows for malware deployment. The actor demonstrated rapid adaptation capabilities during wartime conditions, maintaining high operational availability while expanding targeting to US-based aviation companies. Multiple campaign waves were observed from February through April 2026, with persistent infrastructure and evolving techniques.
MITRE ATT&CK
Tactics, Techniques & Procedures
Defensive mapping
Mapped controls
The audit will verify each of these controls is in place and effective.
| Control | Confidence | Why it matters |
|---|---|---|
| EDR with behavioural detection suggested | 75% | Recommended control for apt |
| Network segmentation between user and server tiers suggested | 75% | Recommended control for apt |
| PAM suggested | 75% | Recommended control for apt |
| Threat hunting suggested | 75% | Recommended control for apt |
| Log retention and SIEM suggested | 75% | Recommended control for apt |