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MALPEDIA_Win_Unidentified_041_Auto

autogenerated rule brought to you by yara-signator

MalwareMalpedia 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

It defines 10 patterns (0 text, 10 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-unidentified-041-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_041_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "c94896cf-dff1-58d2-9557-85d145802d83"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_041"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_041_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "c911ec4ebf90b9860f0b3869734b22d8292c9282da202086c19a7064e6360107"
		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 = { 50 53 e8???????? 83c430 33f6 eb24 837c245408 }
		$sequence_1 = { 837c245410 720c ff742440 e8???????? 83c404 8b4c2438 83c8ff }
		$sequence_2 = { e8???????? 59 ff742410 8bd0 c68424e48300000c 8d4c2458 e8???????? }
		$sequence_3 = { 895dcc e8???????? 83f8ff b9???????? be???????? 0f45f1 56 }
		$sequence_4 = { 884daf eb03 8a4daf 8b7618 8975a4 85f6 75b4 }
		$sequence_5 = { e8???????? 8d4c2444 83c418 6a00 6a01 e8???????? 8b4c2448 }
		$sequence_6 = { eb0a c70600000000 c6460401 8b5d9c 85db 0f859f000000 8b5da0 }
		$sequence_7 = { 895dfc 391cfd28f64700 7518 53 68a00f0000 56 e8???????? }
		$sequence_8 = { c645fc08 837a1408 7202 8b12 8b856cffffff 8b0d???????? ff707c }
		$sequence_9 = { 8b4754 8d4f04 ff7768 89474c 8907 e8???????? ff7768 }

	condition:
		7 of them and filesize < 1097728
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 50 53 e8???????? 83c430 33f6 eb24 837c245408 }
$sequence_1hex{ 837c245410 720c ff742440 e8???????? 83c404 8b4c2438 83c8ff }
$sequence_2hex{ e8???????? 59 ff742410 8bd0 c68424e48300000c 8d4c2458 e8???????? }
$sequence_3hex{ 895dcc e8???????? 83f8ff b9???????? be???????? 0f45f1 56 }
$sequence_4hex{ 884daf eb03 8a4daf 8b7618 8975a4 85f6 75b4 }
$sequence_5hex{ e8???????? 8d4c2444 83c418 6a00 6a01 e8???????? 8b4c2448 }
$sequence_6hex{ eb0a c70600000000 c6460401 8b5d9c 85db 0f859f000000 8b5da0 }
$sequence_7hex{ 895dfc 391cfd28f64700 7518 53 68a00f0000 56 e8???????? }
$sequence_8hex{ c645fc08 837a1408 7202 8b12 8b856cffffff 8b0d???????? ff707c }
$sequence_9hex{ 8b4754 8d4f04 ff7768 89474c 8907 e8???????? ff7768 }

Condition

7 of them and filesize < 1097728

In plain words (Heuristic)

  • The file must be smaller than 1097728 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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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: c94896cf-dff1-58d2-9557-85d145802d83

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