{
	"id": "186fcabe-e51f-4f2c-b78f-2d88d0281192",
	"created_at": "2026-04-06T03:37:50.465219Z",
	"updated_at": "2026-04-10T03:37:17.042446Z",
	"deleted_at": null,
	"sha1_hash": "26f009e8193c404c7bde1ea5e4a9a4a555106c2c",
	"title": "FatDuke (Malware Family)",
	"llm_title": "",
	"authors": "",
	"file_creation_date": "0001-01-01T00:00:00Z",
	"file_modification_date": "0001-01-01T00:00:00Z",
	"file_size": 28451,
	"plain_text": "FatDuke (Malware Family)\r\nBy Fraunhofer FKIE\r\nArchived: 2026-04-06 02:13:01 UTC\r\nAccording to ESET Research, FatDuke is the current flagship backdoor of APT29 and is only deployed on the\r\nmost interesting machines. It is generally dropped by the MiniDuke backdoor, but ESET also have seen the\r\noperators dropping FatDuke using lateral movement tools such as PsExec.The operators regularly repack this\r\nmalware in order to evade detections. The most recent sample of FatDuke that ESET have seen was compiled on\r\nMay 24, 2019. They have seen them trying to regain control of a machine multiple times in a few days, each time\r\nwith a different sample. Their packer, described in a later section, adds a lot of code, leading to large binaries.\r\nWhile the effective code should not be larger than 1MB, ESET have seen one sample weighing in at 13MB, hence\r\nour name for this backdoor component: FatDuke.\r\n[TLP:WHITE] win_fatduke_auto (20251219 | Detects win.fatduke.)\r\nSource: https://malpedia.caad.fkie.fraunhofer.de/details/win.fatduke\r\nhttps://malpedia.caad.fkie.fraunhofer.de/details/win.fatduke\r\nPage 1 of 1",
	"extraction_quality": 1,
	"language": "EN",
	"sources": [
		"ETDA"
	],
	"references": [
		"https://malpedia.caad.fkie.fraunhofer.de/details/win.fatduke"
	],
	"report_names": [
		"win.fatduke"
	],
	"threat_actors": [
		{
			"id": "5b748f86-ac32-4715-be9f-6cf25ae48a4e",
			"created_at": "2024-06-04T02:03:07.956135Z",
			"updated_at": "2026-04-10T02:00:03.689959Z",
			"deleted_at": null,
			"main_name": "IRON HEMLOCK",
			"aliases": [
				"APT29 ",
				"ATK7 ",
				"Blue Kitsune ",
				"Cozy Bear ",
				"The Dukes",
				"UNC2452 ",
				"YTTRIUM "
			],
			"source_name": "Secureworks:IRON HEMLOCK",
			"tools": [
				"CosmicDuke",
				"CozyCar",
				"CozyDuke",
				"DiefenDuke",
				"FatDuke",
				"HAMMERTOSS",
				"LiteDuke",
				"MiniDuke",
				"OnionDuke",
				"PolyglotDuke",
				"RegDuke",
				"RegDuke Loader",
				"SeaDuke",
				"Sliver"
			],
			"source_id": "Secureworks",
			"reports": null
		},
		{
			"id": "a241a1ca-2bc9-450b-a07b-aae747ee2710",
			"created_at": "2024-06-19T02:03:08.150052Z",
			"updated_at": "2026-04-10T02:00:03.737173Z",
			"deleted_at": null,
			"main_name": "IRON RITUAL",
			"aliases": [
				"APT29",
				"Blue Dev 5 ",
				"BlueBravo ",
				"Cloaked Ursa ",
				"CozyLarch ",
				"Dark Halo ",
				"Midnight Blizzard ",
				"NOBELIUM ",
				"StellarParticle ",
				"UNC2452 "
			],
			"source_name": "Secureworks:IRON RITUAL",
			"tools": [
				"Brute Ratel C4",
				"Cobalt Strike",
				"EnvyScout",
				"GoldFinder",
				"GoldMax",
				"NativeZone",
				"RAINDROP",
				"SUNBURST",
				"Sibot",
				"TEARDROP",
				"VaporRage"
			],
			"source_id": "Secureworks",
			"reports": null
		},
		{
			"id": "46b3c0fc-fa0c-4d63-a38a-b33a524561fb",
			"created_at": "2023-01-06T13:46:38.393409Z",
			"updated_at": "2026-04-10T02:00:02.955738Z",
			"deleted_at": null,
			"main_name": "APT29",
			"aliases": [
				"Cloaked Ursa",
				"TA421",
				"Blue Kitsune",
				"BlueBravo",
				"IRON HEMLOCK",
				"G0016",
				"Nobelium",
				"Group 100",
				"YTTRIUM",
				"Grizzly Steppe",
				"ATK7",
				"ITG11",
				"COZY BEAR",
				"The Dukes",
				"Minidionis",
				"UAC-0029",
				"SeaDuke"
			],
			"source_name": "MISPGALAXY:APT29",
			"tools": [
				"SNOWYAMBER",
				"HALFRIG",
				"QUARTERRIG"
			],
			"source_id": "MISPGALAXY",
			"reports": null
		},
		{
			"id": "20d3a08a-3b97-4b2f-90b8-92a89089a57a",
			"created_at": "2022-10-25T15:50:23.548494Z",
			"updated_at": "2026-04-10T02:00:05.292748Z",
			"deleted_at": null,
			"main_name": "APT29",
			"aliases": [
				"APT29",
				"IRON RITUAL",
				"IRON HEMLOCK",
				"NobleBaron",
				"Dark Halo",
				"NOBELIUM",
				"UNC2452",
				"YTTRIUM",
				"The Dukes",
				"Cozy Bear",
				"CozyDuke",
				"SolarStorm",
				"Blue Kitsune",
				"UNC3524",
				"Midnight Blizzard"
			],
			"source_name": "MITRE:APT29",
			"tools": [
				"PinchDuke",
				"ROADTools",
				"WellMail",
				"CozyCar",
				"Mimikatz",
				"Tasklist",
				"OnionDuke",
				"FatDuke",
				"POSHSPY",
				"EnvyScout",
				"SoreFang",
				"GeminiDuke",
				"reGeorg",
				"GoldMax",
				"FoggyWeb",
				"SDelete",
				"PolyglotDuke",
				"AADInternals",
				"MiniDuke",
				"SeaDuke",
				"Sibot",
				"RegDuke",
				"CloudDuke",
				"GoldFinder",
				"AdFind",
				"PsExec",
				"NativeZone",
				"Systeminfo",
				"ipconfig",
				"Impacket",
				"Cobalt Strike",
				"PowerDuke",
				"QUIETEXIT",
				"HAMMERTOSS",
				"BoomBox",
				"CosmicDuke",
				"WellMess",
				"VaporRage",
				"LiteDuke"
			],
			"source_id": "MITRE",
			"reports": null
		}
	],
	"ts_created_at": 1775446670,
	"ts_updated_at": 1775792237,
	"ts_creation_date": 0,
	"ts_modification_date": 0,
	"files": {
		"pdf": "https://archive.orkl.eu/26f009e8193c404c7bde1ea5e4a9a4a555106c2c.pdf",
		"text": "https://archive.orkl.eu/26f009e8193c404c7bde1ea5e4a9a4a555106c2c.txt",
		"img": "https://archive.orkl.eu/26f009e8193c404c7bde1ea5e4a9a4a555106c2c.jpg"
	}
}