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MALPEDIA_Win_Unidentified_098_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-098-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_098_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "c18aa87e-6608-590d-b3e6-6d59705994a8"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_098"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_098_auto.yar#L1-L131"
		license_url = "N/A"
		logic_hash = "f4628b9d13189ec6d9ca2bc0fe1eb5e37f70ed32ec905431ab55d17bbf59580f"
		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 = { c4c1781150e8 4c8b49f8 4d8948f8 4839ca 75e1 4883ea18 48b9abaaaaaaaaaaaa0a }
		$sequence_1 = { e8???????? 488b7320 4c8b6318 4c39e6 742e 66662e0f1f840000000000 }
		$sequence_2 = { ff15???????? 0fb606 6683f808 0f85affeffff 48837e0800 0f85a4feffff 41b847490000 }
		$sequence_3 = { 4883c508 48d1ea 4d8d24d0 4989e8 4d29c8 4d39e1 7617 }
		$sequence_4 = { 8844242b 4189542414 498b542440 493b542448 0f85c8fbffff 4989f0 4889d9 }
		$sequence_5 = { 7449 8802 48ff4340 8b4314 83f80a 750c }
		$sequence_6 = { 664539d1 7ce8 49ffc4 418808 4c39e6 75bd 488b13 }
		$sequence_7 = { 488d47ff 4489ca 664539c8 7d18 885001 4889c1 66440fbe48ff }
		$sequence_8 = { 7fa0 4881ff00000080 7c06 89f8 85c0 7991 48837b1800 }
		$sequence_9 = { 4c8949f0 4c8b48d8 4c8949e8 4939f8 7591 4c29ef }

	condition:
		7 of them and filesize < 3345408
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ c4c1781150e8 4c8b49f8 4d8948f8 4839ca 75e1 4883ea18 48b9abaaaaaaaaaaaa0a }
$sequence_1hex{ e8???????? 488b7320 4c8b6318 4c39e6 742e 66662e0f1f840000000000 }
$sequence_2hex{ ff15???????? 0fb606 6683f808 0f85affeffff 48837e0800 0f85a4feffff 41b847490000 }
$sequence_3hex{ 4883c508 48d1ea 4d8d24d0 4989e8 4d29c8 4d39e1 7617 }
$sequence_4hex{ 8844242b 4189542414 498b542440 493b542448 0f85c8fbffff 4989f0 4889d9 }
$sequence_5hex{ 7449 8802 48ff4340 8b4314 83f80a 750c }
$sequence_6hex{ 664539d1 7ce8 49ffc4 418808 4c39e6 75bd 488b13 }
$sequence_7hex{ 488d47ff 4489ca 664539c8 7d18 885001 4889c1 66440fbe48ff }
$sequence_8hex{ 7fa0 4881ff00000080 7c06 89f8 85c0 7991 48837b1800 }
$sequence_9hex{ 4c8949f0 4c8b48d8 4c8949e8 4939f8 7591 4c29ef }

Condition

7 of them and filesize < 3345408

In plain words (Heuristic)

  • The file must be smaller than 3345408 (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: c18aa87e-6608-590d-b3e6-6d59705994a8

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