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MALPEDIA_Win_Unidentified_044_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-044-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_044_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "c99625f4-50c0-5adb-b7ce-8529cdc0b158"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_044"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_044_auto.yar#L1-L122"
		license_url = "N/A"
		logic_hash = "51fe65afa9e739138bbb0b3d76fe184881b1f0bf50e4b1db118721c4d219c2ba"
		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 = { 6a01 8d4c2416 51 55 e8???????? 83c40c }
		$sequence_1 = { c744242800000000 c744242c01000000 897c2430 ff15???????? 83f801 7533 6a00 }
		$sequence_2 = { 85c0 7407 83c8ff 83c420 c3 }
		$sequence_3 = { 03c0 51 e8???????? 83c404 5f 5e 5d }
		$sequence_4 = { be01000000 50 89742420 ffd5 01742414 }
		$sequence_5 = { e8???????? eb0a 3c04 7509 56 e8???????? 83c404 }
		$sequence_6 = { be01000000 7512 8b4704 8b480c 6aff 51 }
		$sequence_7 = { 81e5ffff0000 2bd5 8b6c241c 2bd3 }
		$sequence_8 = { 660137 ff4c2418 4a 83ef02 89542410 }
		$sequence_9 = { 83c404 e8???????? e8???????? 53 e8???????? 83c404 }

	condition:
		7 of them and filesize < 90112
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 6a01 8d4c2416 51 55 e8???????? 83c40c }
$sequence_1hex{ c744242800000000 c744242c01000000 897c2430 ff15???????? 83f801 7533 6a00 }
$sequence_2hex{ 85c0 7407 83c8ff 83c420 c3 }
$sequence_3hex{ 03c0 51 e8???????? 83c404 5f 5e 5d }
$sequence_4hex{ be01000000 50 89742420 ffd5 01742414 }
$sequence_5hex{ e8???????? eb0a 3c04 7509 56 e8???????? 83c404 }
$sequence_6hex{ be01000000 7512 8b4704 8b480c 6aff 51 }
$sequence_7hex{ 81e5ffff0000 2bd5 8b6c241c 2bd3 }
$sequence_8hex{ 660137 ff4c2418 4a 83ef02 89542410 }
$sequence_9hex{ 83c404 e8???????? e8???????? 53 e8???????? 83c404 }

Condition

7 of them and filesize < 90112

In plain words (Heuristic)

  • The file must be smaller than 90112 (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: c99625f4-50c0-5adb-b7ce-8529cdc0b158

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