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MALPEDIA_Win_Unidentified_071_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-071-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_071_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "ecd0bbae-703b-51a6-96ff-710f93466c00"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_071"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_071_auto.yar#L1-L118"
		license_url = "N/A"
		logic_hash = "a0081e0bf8b9a105d17b607848155d524344d75a493c323ca584f244280d0181"
		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 = { 56 57 ff7510 83e910 8d7df0 8bf1 8d45f0 }
		$sequence_1 = { 2bc2 0bc8 a1???????? 890d???????? }
		$sequence_2 = { 56 c1f802 8bf1 50 e8???????? 84c0 7415 }
		$sequence_3 = { 59 85c0 7512 53 56 ffd5 }
		$sequence_4 = { 53 ff542430 59 59 85c0 751b }
		$sequence_5 = { e8???????? 50 8d45c8 56 50 }
		$sequence_6 = { 7474 40 50 8945f8 e8???????? 8bc8 8945fc }
		$sequence_7 = { e8???????? 8b4d08 8d4704 8b5604 }
		$sequence_8 = { a1???????? 59 c3 8b15???????? }
		$sequence_9 = { a1???????? 83c804 890d???????? a3???????? }

	condition:
		7 of them and filesize < 1220608
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 56 57 ff7510 83e910 8d7df0 8bf1 8d45f0 }
$sequence_1hex{ 2bc2 0bc8 a1???????? 890d???????? }
$sequence_2hex{ 56 c1f802 8bf1 50 e8???????? 84c0 7415 }
$sequence_3hex{ 59 85c0 7512 53 56 ffd5 }
$sequence_4hex{ 53 ff542430 59 59 85c0 751b }
$sequence_5hex{ e8???????? 50 8d45c8 56 50 }
$sequence_6hex{ 7474 40 50 8945f8 e8???????? 8bc8 8945fc }
$sequence_7hex{ e8???????? 8b4d08 8d4704 8b5604 }
$sequence_8hex{ a1???????? 59 c3 8b15???????? }
$sequence_9hex{ a1???????? 83c804 890d???????? a3???????? }

Condition

7 of them and filesize < 1220608

In plain words (Heuristic)

  • The file must be smaller than 1220608 (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: ecd0bbae-703b-51a6-96ff-710f93466c00

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