MALPEDIA_Win_Koiloader_Auto

rule MALPEDIA_Win_Koiloader_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "b5ec09ed-c0fe-5666-b782-1cd528ae8b2a"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.koiloader"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.koiloader_auto.yar#L1-L126"
		license_url = "N/A"
		logic_hash = "c0d8a1479f3f85ab5b7bd961985cb49b8dd8c5f6b2fe772b8438a764dafdc8d1"
		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 = { 0f1f00 8a840dc0f5ffff 88440db0 41 }
		$sequence_1 = { 7421 8d343f 33c9 85f6 7412 0f1f8000000000 }
		$sequence_2 = { 0fb74710 50 ff15???????? 6a06 668945ea b802000000 6a01 }
		$sequence_3 = { 752d 85d2 7410 52 6a00 ff15???????? 50 }
		$sequence_4 = { 6666660f1f840000000000 8b8c15acfcffff 2b8c1574feffff 8b8415b0fcffff 1b841578feffff 898c1574feffff 89841578feffff }
		$sequence_5 = { 0f8404020000 83e801 0f850d020000 394508 0f8404020000 33d2 }
		$sequence_6 = { 0fb64c05b0 c1e208 0bd1 89940558ffffff 83c004 }
		$sequence_7 = { 8b75e8 c1f91f 23c8 8bc1 c1e01a 2bf0 }
		$sequence_8 = { 72ef 8d8520feffff 50 8d55b0 8d8db8f8ffff e8???????? 83c404 }
		$sequence_9 = { 8bd0 e8???????? 8bf0 83c404 85f6 7435 6804010000 }

	condition:
		7 of them and filesize < 101376
}