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MALPEDIA_Win_Orchard_Auto

autogenerated rule brought to you by yara-signator

MalwareOrchardMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
Author
Felix Bilstein - yara-signator at cocacoding dot com
Date
2026-05-04
Modified
2026-05-18
Score / Quality
75 / 75

What this rule detects

autogenerated rule brought to you by yara-signator

Associated malware family: Orchard.

It defines 16 patterns (0 text, 16 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-orchard-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Orchard_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "7de940d5-584d-5aff-b2d4-7e170a44e5c9"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.orchard"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.orchard_auto.yar#L1-L155"
		license_url = "N/A"
		logic_hash = "8c12838db4bcb3ee6f62a3b1ff1db7a8af267b58c9ff94be80b506ff6195c762"
		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 = { 83c028 895de0 8b5de8 894348 }
		$sequence_1 = { 6a05 c70600000000 c7461000000000 c746140f000000 }
		$sequence_2 = { 8d442410 50 ff15???????? 6685c0 }
		$sequence_3 = { e8???????? 8b55e0 8b7de8 8955e0 8b02 }
		$sequence_4 = { 83c404 e8???????? 99 b95b000000 }
		$sequence_5 = { 8b75a8 46 56 e8???????? }
		$sequence_6 = { 8bc6 89542420 f7e1 8bc8 8954240c }
		$sequence_7 = { 56 ff15???????? ff15???????? 50 6a00 68ffff1f00 }
		$sequence_8 = { 8945e0 c7437000000000 c7839000000000000000 c7839400000000000000 }
		$sequence_9 = { f7f9 81c2d0070000 52 ffd6 }
		$sequence_10 = { 6a0c 57 e8???????? 83c408 c645fc01 }
		$sequence_11 = { 7214 8b49fc 83c223 2bc1 83c0fc 83f81f 0f877e030000 }
		$sequence_12 = { 50 ff15???????? 83f805 7507 }
		$sequence_13 = { c645fc08 e8???????? 894604 83c404 }
		$sequence_14 = { 8bc8 8bc7 8d9d48ffffff c645fc03 }
		$sequence_15 = { 8bc8 8bc7 8d5c2460 c68424a800000001 e8???????? }

	condition:
		7 of them and filesize < 4716352
}

Strings (16 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 83c028 895de0 8b5de8 894348 }
$sequence_1hex{ 6a05 c70600000000 c7461000000000 c746140f000000 }
$sequence_2hex{ 8d442410 50 ff15???????? 6685c0 }
$sequence_3hex{ e8???????? 8b55e0 8b7de8 8955e0 8b02 }
$sequence_4hex{ 83c404 e8???????? 99 b95b000000 }
$sequence_5hex{ 8b75a8 46 56 e8???????? }
$sequence_6hex{ 8bc6 89542420 f7e1 8bc8 8954240c }
$sequence_7hex{ 56 ff15???????? ff15???????? 50 6a00 68ffff1f00 }
$sequence_8hex{ 8945e0 c7437000000000 c7839000000000000000 c7839400000000000000 }
$sequence_9hex{ f7f9 81c2d0070000 52 ffd6 }
$sequence_10hex{ 6a0c 57 e8???????? 83c408 c645fc01 }
$sequence_11hex{ 7214 8b49fc 83c223 2bc1 83c0fc 83f81f 0f877e030000 }
$sequence_12hex{ 50 ff15???????? 83f805 7507 }
$sequence_13hex{ c645fc08 e8???????? 894604 83c404 }
$sequence_14hex{ 8bc8 8bc7 8d9d48ffffff c645fc03 }
$sequence_15hex{ 8bc8 8bc7 8d5c2460 c68424a800000001 e8???????? }

Condition

7 of them and filesize < 4716352

In plain words (Heuristic)

  • The file must be smaller than 4716352 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

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References

Licence & attribution

Author: Felix Bilstein - yara-signator at cocacoding dot com

Source repository: Malpedia signator rules @ c901f97b7d

Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: 7de940d5-584d-5aff-b2d4-7e170a44e5c9

Metadata

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE