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MALPEDIA_Win_Unidentified_076_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-076-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_076_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "4aac4f6a-0ad2-5a3d-8c22-f68bd89c2176"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_076"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_076_auto.yar#L1-L129"
		license_url = "N/A"
		logic_hash = "c53f44d934f31243451206accc801c3ce4f30b9ff0072fe283950159f10fde1f"
		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 = { 488bcb ff9040070000 488b87c8000000 4c634e04 8b8f48030000 4c8bc3 ba78000000 }
		$sequence_1 = { 488bcf e8???????? 448b8c2418010000 4181f9c8000000 0f8f46ffffff 498bc4 803c03ad }
		$sequence_2 = { 44897dff 48894503 4889450b 48894513 89451b 44897d1f 48894527 }
		$sequence_3 = { ff15???????? ff15???????? 448bc0 b8d34d6210 41f7e8 c1fa04 8bca }
		$sequence_4 = { eb02 33ff 488b5c2440 488b6c2448 488b742450 8bc7 488b7c2458 }
		$sequence_5 = { 668993b0080000 66898bb2080000 8b8bf00a0000 413bcc 7509 4489a3dc020000 eb28 }
		$sequence_6 = { 0f8ec2000000 3b7708 488b8708010000 448bee 440f4f6f08 33c9 41b800100000 }
		$sequence_7 = { 488bcf e8???????? eb54 8d41fc 83f802 }
		$sequence_8 = { 41b800100000 8bd7 33c9 ff95f8000000 41b904000000 41b800100000 8bd7 }
		$sequence_9 = { 488d8fbc050000 48898424a0000000 49891f ff97e8000000 }

	condition:
		7 of them and filesize < 114688
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 488bcb ff9040070000 488b87c8000000 4c634e04 8b8f48030000 4c8bc3 ba78000000 }
$sequence_1hex{ 488bcf e8???????? 448b8c2418010000 4181f9c8000000 0f8f46ffffff 498bc4 803c03ad }
$sequence_2hex{ 44897dff 48894503 4889450b 48894513 89451b 44897d1f 48894527 }
$sequence_3hex{ ff15???????? ff15???????? 448bc0 b8d34d6210 41f7e8 c1fa04 8bca }
$sequence_4hex{ eb02 33ff 488b5c2440 488b6c2448 488b742450 8bc7 488b7c2458 }
$sequence_5hex{ 668993b0080000 66898bb2080000 8b8bf00a0000 413bcc 7509 4489a3dc020000 eb28 }
$sequence_6hex{ 0f8ec2000000 3b7708 488b8708010000 448bee 440f4f6f08 33c9 41b800100000 }
$sequence_7hex{ 488bcf e8???????? eb54 8d41fc 83f802 }
$sequence_8hex{ 41b800100000 8bd7 33c9 ff95f8000000 41b904000000 41b800100000 8bd7 }
$sequence_9hex{ 488d8fbc050000 48898424a0000000 49891f ff97e8000000 }

Condition

7 of them and filesize < 114688

In plain words (Heuristic)

  • The file must be smaller than 114688 (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: 4aac4f6a-0ad2-5a3d-8c22-f68bd89c2176

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