MALPEDIA_Win_Ryuk_Stealer_Auto

rule MALPEDIA_Win_Ryuk_Stealer_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "25bfed9e-c63a-5aef-bc3b-2c7946389de1"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.ryuk_stealer"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ryuk_stealer_auto.yar#L1-L115"
		license_url = "N/A"
		logic_hash = "1a29a1c482d6ad47c21930458460d24d19bc663574cae29c5c89f53d73312866"
		score = 75
		quality = 75
		tags = "FILE"
		version = "1"
		tool = "yara-signator v0.6.0"
		signator_config = "callsandjumps;datarefs;binvalue"
		malpedia_rule_date = "20260422"
		malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
		malpedia_version = "20260504"
		malpedia_license = "CC BY-SA 4.0"
		malpedia_sharing = "TLP:WHITE"

	strings:
		$sequence_0 = { 89442464 83c40c 66a1???????? 8bf2 }
		$sequence_1 = { 66a3???????? ff15???????? 83f805 740a b9???????? e8???????? 46 }
		$sequence_2 = { 0f8503070000 8d85b4fdffff 68???????? 50 e8???????? }
		$sequence_3 = { 7414 6888130000 ff15???????? ff7604 ff15???????? 6810270000 }
		$sequence_4 = { b9a0860100 f7f9 81c2a8610000 52 ff15???????? 46 }
		$sequence_5 = { 8bcb 0f44f2 42 8d7902 }
		$sequence_6 = { e8???????? 99 b9a0860100 f7f9 81c2f8240100 52 ff15???????? }
		$sequence_7 = { 6685c0 75f5 6a04 6800100000 }
		$sequence_8 = { 8a443701 3c2f 7408 3c2d }
		$sequence_9 = { 75f4 a1???????? 8907 eb38 }

	condition:
		7 of them and filesize < 368640
}