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MALPEDIA_Win_Void_Auto

autogenerated rule brought to you by yara-signator

MalwareVoidMalpedia 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: Void.

It defines 8 patterns (0 text, 8 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-void-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Void_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "520554d1-50a6-5254-9339-189e481c5a01"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.void"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.void_auto.yar#L1-L114"
		license_url = "N/A"
		logic_hash = "b331ddf21f2b10083589dea5970e702d96b004b974032e66df6edad2f4615dec"
		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 = { 68???????? 50 8d4d30 c745fc03000000 e8???????? 68???????? 8d4530 }
		$sequence_1 = { 747e 6a01 8d8d64ffffff e8???????? 8d47a0 c745fc0f000000 50 }
		$sequence_2 = { 6a01 8d4ddc 895d68 e8???????? 8b5d64 8bc7 83c80c }
		$sequence_3 = { 83c40c 8d8d34ffffff 57 e8???????? 8b55ec 83fa10 7228 }
		$sequence_4 = { 83c404 c645fc09 8d4ddc ff751c e8???????? 83e3df 895d6c }
		$sequence_5 = { 50 ff75e8 8d45bc c645fc0c 50 ff5214 8bf0 }
		$sequence_6 = { 56 e8???????? 8b74242c 83c40c 8b7c242c 8d460c 50 }
		$sequence_7 = { 0f8c0affffff e9???????? 803d????????00 0f8599000000 33c0 bfc2010000 66a3???????? }

	condition:
		7 of them and filesize < 2744320
}

Strings (8 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 68???????? 50 8d4d30 c745fc03000000 e8???????? 68???????? 8d4530 }
$sequence_1hex{ 747e 6a01 8d8d64ffffff e8???????? 8d47a0 c745fc0f000000 50 }
$sequence_2hex{ 6a01 8d4ddc 895d68 e8???????? 8b5d64 8bc7 83c80c }
$sequence_3hex{ 83c40c 8d8d34ffffff 57 e8???????? 8b55ec 83fa10 7228 }
$sequence_4hex{ 83c404 c645fc09 8d4ddc ff751c e8???????? 83e3df 895d6c }
$sequence_5hex{ 50 ff75e8 8d45bc c645fc0c 50 ff5214 8bf0 }
$sequence_6hex{ 56 e8???????? 8b74242c 83c40c 8b7c242c 8d460c 50 }
$sequence_7hex{ 0f8c0affffff e9???????? 803d????????00 0f8599000000 33c0 bfc2010000 66a3???????? }

Condition

7 of them and filesize < 2744320

In plain words (Heuristic)

  • The file must be smaller than 2744320 (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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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

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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: 520554d1-50a6-5254-9339-189e481c5a01

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