MALPEDIA_Win_Cryptowall_Auto

rule MALPEDIA_Win_Cryptowall_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "dc78d245-24cd-591d-b72d-3679e05b94d1"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.cryptowall"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.cryptowall_auto.yar#L1-L116"
		license_url = "N/A"
		logic_hash = "71d5fcaf3ecd458e914e51862d2af5ce473fc62a262bc845fad2db5196372327"
		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 = { 6a00 6a40 6a01 6a01 6a00 6a00 8d55e8 }
		$sequence_1 = { 8b4d0c 8b11 8b45f8 8d4c0202 51 8b5508 }
		$sequence_2 = { 7461 c745dc18000000 c745e000000000 c745e800000000 c745e400000000 }
		$sequence_3 = { 99 b91a000000 f7f9 83c261 8b45f4 }
		$sequence_4 = { 55 8bec 51 837d0800 7441 837d0c00 }
		$sequence_5 = { 52 e8???????? 83c408 8b0d???????? 894124 }
		$sequence_6 = { 8945fc b909000000 85c9 7463 6a08 }
		$sequence_7 = { 52 e8???????? 83c408 8b0d???????? 8981ec000000 }
		$sequence_8 = { 894dfc 837df805 752d 837dfc00 }
		$sequence_9 = { e8???????? 83c408 8b0d???????? 8981ec000000 }

	condition:
		7 of them and filesize < 417792
}