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MALPEDIA_Win_Unidentified_105_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-105-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_105_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "f2025884-bdde-5892-a153-091931b9af22"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_105"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_105_auto.yar#L1-L117"
		license_url = "N/A"
		logic_hash = "18a1bd6dfaab243848121d17520bc7bf66bbc668f3356ff46f34ae2dff2b80ea"
		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 e8???????? a1???????? 6800020000 }
		$sequence_1 = { 6800002000 e8???????? 6800002000 8bd8 57 53 e8???????? }
		$sequence_2 = { 8bd0 a1???????? 8d7801 8a08 40 84c9 75f9 }
		$sequence_3 = { c785a8feffff00040000 e8???????? 6800040000 8985c0feffff c785c4feffff00040000 }
		$sequence_4 = { 7410 8d9560ffffff 52 ffd0 }
		$sequence_5 = { e8???????? 8b85f8feffff 8b8de0feffff 83c40c 8901 3d00002000 }
		$sequence_6 = { a1???????? 89421c eb14 83f801 }
		$sequence_7 = { 40 84d2 75f9 8d542414 52 }
		$sequence_8 = { 75f9 2b55f0 8d45f8 50 53 52 }
		$sequence_9 = { eb13 83f801 750e a1???????? 8b0d???????? }

	condition:
		7 of them and filesize < 253952
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 50 e8???????? a1???????? 6800020000 }
$sequence_1hex{ 6800002000 e8???????? 6800002000 8bd8 57 53 e8???????? }
$sequence_2hex{ 8bd0 a1???????? 8d7801 8a08 40 84c9 75f9 }
$sequence_3hex{ c785a8feffff00040000 e8???????? 6800040000 8985c0feffff c785c4feffff00040000 }
$sequence_4hex{ 7410 8d9560ffffff 52 ffd0 }
$sequence_5hex{ e8???????? 8b85f8feffff 8b8de0feffff 83c40c 8901 3d00002000 }
$sequence_6hex{ a1???????? 89421c eb14 83f801 }
$sequence_7hex{ 40 84d2 75f9 8d542414 52 }
$sequence_8hex{ 75f9 2b55f0 8d45f8 50 53 52 }
$sequence_9hex{ eb13 83f801 750e a1???????? 8b0d???????? }

Condition

7 of them and filesize < 253952

In plain words (Heuristic)

  • The file must be smaller than 253952 (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: f2025884-bdde-5892-a153-091931b9af22

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