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            "modified": "2023-04-10T21:54:46.756Z",
            "name": "HAFNIUM",
            "description": "[HAFNIUM](https://attack.mitre.org/groups/G0125) is a likely state-sponsored cyber espionage group operating out of China that has been active since at least January 2021. [HAFNIUM](https://attack.mitre.org/groups/G0125) primarily targets entities in the US across a number of industry sectors, including infectious disease researchers, law firms, higher education institutions, defense contractors, policy think tanks, and NGOs.(Citation: Microsoft HAFNIUM March 2020)(Citation: Volexity Exchange Marauder March 2021)",
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                "Operation Exchange Marauder"
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                "Daniyal Naeem, BT Security",
                "Matt Brenton, Zurich Insurance Group",
                "Mayuresh Dani, Qualys",
                "Harshal Tupsamudre, Qualys",
                "Vinayak Wadhwa, SAFE Security"
            ],
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            "id": "intrusion-set--2688b13e-8e71-405a-9c40-0dee94bddf87",
            "created": "2021-03-03T19:40:47.280Z",
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            "revoked": false,
            "external_references": [
                {
                    "source_name": "mitre-attack",
                    "url": "https://attack.mitre.org/groups/G0125",
                    "external_id": "G0125"
                },
                {
                    "source_name": "Operation Exchange Marauder",
                    "description": "(Citation: Volexity Exchange Marauder March 2021)"
                },
                {
                    "source_name": "Volexity Exchange Marauder March 2021",
                    "description": "Gruzweig, J. et al. (2021, March 2). Operation Exchange Marauder: Active Exploitation of Multiple Zero-Day Microsoft Exchange Vulnerabilities. Retrieved March 3, 2021.",
                    "url": "https://www.volexity.com/blog/2021/03/02/active-exploitation-of-microsoft-exchange-zero-day-vulnerabilities/"
                },
                {
                    "source_name": "Microsoft HAFNIUM March 2020",
                    "description": "MSTIC. (2021, March 2). HAFNIUM targeting Exchange Servers with 0-day exploits. Retrieved March 3, 2021.",
                    "url": "https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/"
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            ],
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