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MALPEDIA_Win_Redalpha_Auto

autogenerated rule brought to you by yara-signator

MalwareRedalphaMalpedia 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 / 73

What this rule detects

autogenerated rule brought to you by yara-signator

Associated malware family: Redalpha.

It defines 31 patterns (0 text, 31 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-redalpha-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Redalpha_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "cd9045d7-f87a-592e-9809-e5720f592d0f"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.redalpha"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.redalpha_auto.yar#L1-L295"
		license_url = "N/A"
		logic_hash = "f85fca11ddb3d7432dacaec7cca79704d6819401bb8debb1c4167507085bc80d"
		score = 75
		quality = 73
		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 = { 50 e8???????? 83c40c c0e304 0fb6c3 50 }
		$sequence_1 = { ba00010000 488d8d00010000 ff15???????? 488b8b38010000 }
		$sequence_2 = { 8b4508 be00100000 89475c 8b978c000000 }
		$sequence_3 = { 8b4508 c645fc06 85c0 753f 8d45e0 c745dcd4024300 }
		$sequence_4 = { 8b4508 c1ee04 33f1 033cb0 }
		$sequence_5 = { 8b4508 8d4dc4 53 8b5d10 }
		$sequence_6 = { 4889742420 57 4881ec30040000 33f6 }
		$sequence_7 = { 6690 39b42440040000 76b7 33d2 }
		$sequence_8 = { 803831 0f8539020000 83bc248800000058 0f852b020000 4885c9 750f }
		$sequence_9 = { 8b4508 898850030000 8b4508 59 c74048c8154400 }
		$sequence_10 = { 83cdff 488bd9 4c8bfa 458bc2 4c637014 }
		$sequence_11 = { 4155 4156 4157 8bb994000000 448bda 448b4944 }
		$sequence_12 = { 730d 488b03 83780800 0f855dfeffff 8b8b18170000 }
		$sequence_13 = { 488b0b ff15???????? 488b0b ff15???????? ffc7 }
		$sequence_14 = { 8b4508 8bc8 83e03f c1f906 6bc030 03048d30284400 }
		$sequence_15 = { 8b4508 8955fc 56 8bf1 57 bf01000000 85c0 }
		$sequence_16 = { 50 64892500000000 ff7108 c701???????? ff15???????? }
		$sequence_17 = { 8d1c3f 53 50 51 }
		$sequence_18 = { c645fc01 8d5102 668b01 83c102 6685c0 75f5 2bca }
		$sequence_19 = { 8d74242c 83c40c 33c9 8d5601 8a06 46 84c0 }
		$sequence_20 = { 8945f4 8b4514 40 c745ec33374000 894df8 8945fc 64a100000000 }
		$sequence_21 = { 68???????? 50 ffd7 8b5d08 8d85f4fbffff 8b35???????? }
		$sequence_22 = { 50 e8???????? 8d842480140000 c74424443c000000 }
		$sequence_23 = { c3 8bff 55 8bec 8b4d08 33c0 3b0cc5a8fc4000 }
		$sequence_24 = { ffd6 8b45a0 85c0 7403 50 ffd6 85ff }
		$sequence_25 = { 8b4308 2bc1 51 50 ff7658 8bce e8???????? }
		$sequence_26 = { 6800040000 894608 e8???????? 53 8b1d???????? }
		$sequence_27 = { ffd3 56 ffd3 ff742428 ffd3 8b8c246c180000 8bc7 }
		$sequence_28 = { e8???????? 84c0 7508 83ceff e9???????? 6a00 }
		$sequence_29 = { b9???????? c745fc00000000 8d5102 6690 }
		$sequence_30 = { c1e902 50 f3a5 8d8574ffffff }

	condition:
		7 of them and filesize < 606208
}

Strings (31 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 50 e8???????? 83c40c c0e304 0fb6c3 50 }
$sequence_1hex{ ba00010000 488d8d00010000 ff15???????? 488b8b38010000 }
$sequence_2hex{ 8b4508 be00100000 89475c 8b978c000000 }
$sequence_3hex{ 8b4508 c645fc06 85c0 753f 8d45e0 c745dcd4024300 }
$sequence_4hex{ 8b4508 c1ee04 33f1 033cb0 }
$sequence_5hex{ 8b4508 8d4dc4 53 8b5d10 }
$sequence_6hex{ 4889742420 57 4881ec30040000 33f6 }
$sequence_7hex{ 6690 39b42440040000 76b7 33d2 }
$sequence_8hex{ 803831 0f8539020000 83bc248800000058 0f852b020000 4885c9 750f }
$sequence_9hex{ 8b4508 898850030000 8b4508 59 c74048c8154400 }
$sequence_10hex{ 83cdff 488bd9 4c8bfa 458bc2 4c637014 }
$sequence_11hex{ 4155 4156 4157 8bb994000000 448bda 448b4944 }
$sequence_12hex{ 730d 488b03 83780800 0f855dfeffff 8b8b18170000 }
$sequence_13hex{ 488b0b ff15???????? 488b0b ff15???????? ffc7 }
$sequence_14hex{ 8b4508 8bc8 83e03f c1f906 6bc030 03048d30284400 }
$sequence_15hex{ 8b4508 8955fc 56 8bf1 57 bf01000000 85c0 }
$sequence_16hex{ 50 64892500000000 ff7108 c701???????? ff15???????? }
$sequence_17hex{ 8d1c3f 53 50 51 }
$sequence_18hex{ c645fc01 8d5102 668b01 83c102 6685c0 75f5 2bca }
$sequence_19hex{ 8d74242c 83c40c 33c9 8d5601 8a06 46 84c0 }
$sequence_20hex{ 8945f4 8b4514 40 c745ec33374000 894df8 8945fc 64a100000000 }
$sequence_21hex{ 68???????? 50 ffd7 8b5d08 8d85f4fbffff 8b35???????? }
$sequence_22hex{ 50 e8???????? 8d842480140000 c74424443c000000 }
$sequence_23hex{ c3 8bff 55 8bec 8b4d08 33c0 3b0cc5a8fc4000 }
$sequence_24hex{ ffd6 8b45a0 85c0 7403 50 ffd6 85ff }
$sequence_25hex{ 8b4308 2bc1 51 50 ff7658 8bce e8???????? }
$sequence_26hex{ 6800040000 894608 e8???????? 53 8b1d???????? }
$sequence_27hex{ ffd3 56 ffd3 ff742428 ffd3 8b8c246c180000 8bc7 }
$sequence_28hex{ e8???????? 84c0 7508 83ceff e9???????? 6a00 }
$sequence_29hex{ b9???????? c745fc00000000 8d5102 6690 }
$sequence_30hex{ c1e902 50 f3a5 8d8574ffffff }

Condition

7 of them and filesize < 606208

In plain words (Heuristic)

  • The file must be smaller than 606208 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

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: cd9045d7-f87a-592e-9809-e5720f592d0f

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