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MALPEDIA_Win_Unidentified_113_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-113-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_113_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "5d0296bf-baaf-53a4-9aeb-8da6b1c4565e"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_113"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_113_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "397c4f2ff62087eb02ce1bb7f9b6c0b1271d057b9a04c7531d9630cd496233bf"
		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 = { eb07 c7470400000000 0fb602 83e801 7419 83e801 7409 }
		$sequence_1 = { ff742434 ff15???????? ff74243c ff15???????? 57 ff15???????? 8b8c2468030000 }
		$sequence_2 = { 8b7704 8b442418 8b0e 8b5140 83f807 750d 8b44241c }
		$sequence_3 = { c707ffffffff c6470400 c7470800000000 c7470c00000000 85f6 7421 83cfff }
		$sequence_4 = { ffd1 56 e8???????? 8b742424 83c414 eb53 83bdc800000001 }
		$sequence_5 = { c744881000000000 eb70 8b94242c010000 837a0800 7467 8d0489 8b8c2434010000 }
		$sequence_6 = { ff15???????? 83c40c c786000d000000000000 5e 5f 5d 8bc3 }
		$sequence_7 = { c745fcffffffff 83c408 8b55e4 83fa08 72c2 8b4dd0 8d145502000000 }
		$sequence_8 = { ff15???????? 83c410 83be240d000000 0f8449030000 8b6c2418 8d442434 50 }
		$sequence_9 = { c7442438e0ec0a10 50 c744244070fe0a10 c744244400000000 89542438 894c2450 e8???????? }

	condition:
		7 of them and filesize < 4707328
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ eb07 c7470400000000 0fb602 83e801 7419 83e801 7409 }
$sequence_1hex{ ff742434 ff15???????? ff74243c ff15???????? 57 ff15???????? 8b8c2468030000 }
$sequence_2hex{ 8b7704 8b442418 8b0e 8b5140 83f807 750d 8b44241c }
$sequence_3hex{ c707ffffffff c6470400 c7470800000000 c7470c00000000 85f6 7421 83cfff }
$sequence_4hex{ ffd1 56 e8???????? 8b742424 83c414 eb53 83bdc800000001 }
$sequence_5hex{ c744881000000000 eb70 8b94242c010000 837a0800 7467 8d0489 8b8c2434010000 }
$sequence_6hex{ ff15???????? 83c40c c786000d000000000000 5e 5f 5d 8bc3 }
$sequence_7hex{ c745fcffffffff 83c408 8b55e4 83fa08 72c2 8b4dd0 8d145502000000 }
$sequence_8hex{ ff15???????? 83c410 83be240d000000 0f8449030000 8b6c2418 8d442434 50 }
$sequence_9hex{ c7442438e0ec0a10 50 c744244070fe0a10 c744244400000000 89542438 894c2450 e8???????? }

Condition

7 of them and filesize < 4707328

In plain words (Heuristic)

  • The file must be smaller than 4707328 (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: 5d0296bf-baaf-53a4-9aeb-8da6b1c4565e

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