Skip to content

YARA · Malpedia signator rules

MALPEDIA_Win_Unidentified_107_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-107-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_107_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "d83a8059-3f06-5f8b-ad4c-9d1526372979"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_107"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_107_auto.yar#L1-L117"
		license_url = "N/A"
		logic_hash = "dc92ae59d2dfcbbe7aa2176f458c0990fe3a128c2f6affa3d44cf0089799d9c7"
		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 = { 48c7c12f398d13 e8???????? 4989c7 48c7c12f398d13 e8???????? }
		$sequence_1 = { 75dc 4c89e9 4883c420 5b }
		$sequence_2 = { e8???????? 4989c7 48c7c10f15af3d e8???????? 4883c464 }
		$sequence_3 = { 0f8596010000 8b5308 83fa01 0f85cb010000 4883c30c 4c39e3 }
		$sequence_4 = { 7e96 8b13 4883f80b 0f8f33010000 8b03 85c0 }
		$sequence_5 = { 4883ec64 48c7c10f15af3d e8???????? 4989c7 48c7c10f15af3d e8???????? }
		$sequence_6 = { 4829d1 410fb75014 498d541018 450fb74006 4585c0 }
		$sequence_7 = { 4989d0 4c09f2 4585c0 490f49d0 4829c2 4c8d3c0a }
		$sequence_8 = { 4989c4 4885c0 75e9 488b3d???????? 8b07 }
		$sequence_9 = { 74d8 418d40ff 488d0480 4c8d4cc228 0f1f00 }

	condition:
		7 of them and filesize < 254976
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 48c7c12f398d13 e8???????? 4989c7 48c7c12f398d13 e8???????? }
$sequence_1hex{ 75dc 4c89e9 4883c420 5b }
$sequence_2hex{ e8???????? 4989c7 48c7c10f15af3d e8???????? 4883c464 }
$sequence_3hex{ 0f8596010000 8b5308 83fa01 0f85cb010000 4883c30c 4c39e3 }
$sequence_4hex{ 7e96 8b13 4883f80b 0f8f33010000 8b03 85c0 }
$sequence_5hex{ 4883ec64 48c7c10f15af3d e8???????? 4989c7 48c7c10f15af3d e8???????? }
$sequence_6hex{ 4829d1 410fb75014 498d541018 450fb74006 4585c0 }
$sequence_7hex{ 4989d0 4c09f2 4585c0 490f49d0 4829c2 4c8d3c0a }
$sequence_8hex{ 4989c4 4885c0 75e9 488b3d???????? 8b07 }
$sequence_9hex{ 74d8 418d40ff 488d0480 4c8d4cc228 0f1f00 }

Condition

7 of them and filesize < 254976

In plain words (Heuristic)

  • The file must be smaller than 254976 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

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: d83a8059-3f06-5f8b-ad4c-9d1526372979

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