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MALPEDIA_Win_Unidentified_100_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-100-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_100_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "10e936da-f22c-50be-bc05-a5a93c8d7577"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_100"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_100_auto.yar#L1-L122"
		license_url = "N/A"
		logic_hash = "6451eccbbc38115e7b096bf9bb2e522aaf03c5ad5e4db979198e28fc1f8d2d4d"
		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 = { eb0b 0fb6442422 fec8 88442422 0fb6442422 83f801 7c35 }
		$sequence_1 = { 88040a eb44 48630424 837c841002 7520 48630424 }
		$sequence_2 = { 488b8c2418040000 488b542470 0fb6941488000000 881401 ebb2 }
		$sequence_3 = { 8d048503000000 4898 0fb64c2420 8d0c8d03000000 4863c9 488b542448 }
		$sequence_4 = { 4889442458 48837c245800 7402 eb02 eb9e 48837c245800 }
		$sequence_5 = { 48837c244000 7441 4c8d8c24b0070000 4533c0 488d9424e0060000 }
		$sequence_6 = { 833c2410 0f8d4a020000 48630424 488b4c2470 }
		$sequence_7 = { b90a000000 ff15???????? 48c744242800000000 c744242000000000 41b9ffffffff 4c8d842420070000 488b942458090000 }
		$sequence_8 = { 33c8 8bc1 88442401 0fb6442420 2580000000 88442402 0fb6442420 }
		$sequence_9 = { 488d842430030000 4889442420 4c8b8c24b8200000 4c8d8424c00a0000 488d9424f0030000 }

	condition:
		7 of them and filesize < 372736
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ eb0b 0fb6442422 fec8 88442422 0fb6442422 83f801 7c35 }
$sequence_1hex{ 88040a eb44 48630424 837c841002 7520 48630424 }
$sequence_2hex{ 488b8c2418040000 488b542470 0fb6941488000000 881401 ebb2 }
$sequence_3hex{ 8d048503000000 4898 0fb64c2420 8d0c8d03000000 4863c9 488b542448 }
$sequence_4hex{ 4889442458 48837c245800 7402 eb02 eb9e 48837c245800 }
$sequence_5hex{ 48837c244000 7441 4c8d8c24b0070000 4533c0 488d9424e0060000 }
$sequence_6hex{ 833c2410 0f8d4a020000 48630424 488b4c2470 }
$sequence_7hex{ b90a000000 ff15???????? 48c744242800000000 c744242000000000 41b9ffffffff 4c8d842420070000 488b942458090000 }
$sequence_8hex{ 33c8 8bc1 88442401 0fb6442420 2580000000 88442402 0fb6442420 }
$sequence_9hex{ 488d842430030000 4889442420 4c8b8c24b8200000 4c8d8424c00a0000 488d9424f0030000 }

Condition

7 of them and filesize < 372736

In plain words (Heuristic)

  • The file must be smaller than 372736 (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: 10e936da-f22c-50be-bc05-a5a93c8d7577

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