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MALPEDIA_Win_Unidentified_006_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-006-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Unidentified_006_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "19e0eb56-f60e-535e-944c-8ad3d8aa7fa7"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.unidentified_006"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.unidentified_006_auto.yar#L1-L124"
		license_url = "N/A"
		logic_hash = "f7ab888f1e71782336f0c7a70aaf6d114c67cfa2e09e4d16325a8737ae874084"
		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 = { 3907 7417 833e00 7408 ff36 e8???????? 59 }
		$sequence_1 = { 6a00 8d45fc 897dfc 50 8d45f8 50 6a00 }
		$sequence_2 = { 85c9 7410 8b55f4 85d2 7409 e8???????? 894708 }
		$sequence_3 = { 85c0 7435 8b4df4 8bd6 50 e8???????? 59 }
		$sequence_4 = { 85f6 7410 57 8b7d0c 2bf8 }
		$sequence_5 = { 0fb6875c204000 47 03c6 83c603 25ff000000 }
		$sequence_6 = { eb45 8b7510 85f6 743c }
		$sequence_7 = { 8b4dfc 83c40c 8bf7 8bd7 85c9 7421 83ff0c }
		$sequence_8 = { 33ff 53 ff15???????? 53 ff15???????? }
		$sequence_9 = { 8bf0 57 56 e8???????? 83c410 33c0 }

	condition:
		7 of them and filesize < 40960
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 3907 7417 833e00 7408 ff36 e8???????? 59 }
$sequence_1hex{ 6a00 8d45fc 897dfc 50 8d45f8 50 6a00 }
$sequence_2hex{ 85c9 7410 8b55f4 85d2 7409 e8???????? 894708 }
$sequence_3hex{ 85c0 7435 8b4df4 8bd6 50 e8???????? 59 }
$sequence_4hex{ 85f6 7410 57 8b7d0c 2bf8 }
$sequence_5hex{ 0fb6875c204000 47 03c6 83c603 25ff000000 }
$sequence_6hex{ eb45 8b7510 85f6 743c }
$sequence_7hex{ 8b4dfc 83c40c 8bf7 8bd7 85c9 7421 83ff0c }
$sequence_8hex{ 33ff 53 ff15???????? 53 ff15???????? }
$sequence_9hex{ 8bf0 57 56 e8???????? 83c410 33c0 }

Condition

7 of them and filesize < 40960

In plain words (Heuristic)

  • The file must be smaller than 40960 (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: 19e0eb56-f60e-535e-944c-8ad3d8aa7fa7

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