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MALPEDIA_Win_Thunderx_Auto

autogenerated rule brought to you by yara-signator

MalwareThunderxMalpedia 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

Associated malware family: Thunderx.

It defines 10 patterns (0 text, 10 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-thunderx-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Thunderx_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "74cc12c7-c26c-5b07-8bf3-e61c0c3737a0"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.thunderx"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.thunderx_auto.yar#L1-L128"
		license_url = "N/A"
		logic_hash = "be1fae743a9b33f70688c51942e116572c878e8696fd03ea77455b3bd8028673"
		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 = { 56 8b7508 8d5602 668b06 83c602 6685c0 }
		$sequence_1 = { 8b4590 03c1 894d8c 6a0d 50 e8???????? }
		$sequence_2 = { 50 e8???????? 8d4dd4 e8???????? 8d4dbc e8???????? 8bc3 }
		$sequence_3 = { eb02 33db 8ac3 e8???????? c3 55 8bec }
		$sequence_4 = { 8945f0 e8???????? 8bf8 6bc61c 8b750c 56 897df8 }
		$sequence_5 = { 6a00 51 ff35???????? b8???????? 0f4305???????? 50 }
		$sequence_6 = { a1???????? 33c4 8944241c 56 57 8bfa 8bf1 }
		$sequence_7 = { 6a00 6a01 ff15???????? 8bf8 85ff 751a }
		$sequence_8 = { 50 56 ffd7 85c0 7462 8b44240c }
		$sequence_9 = { 894db0 8b048d701b4200 8975b4 8b440618 8b7514 03f2 }

	condition:
		7 of them and filesize < 319488
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 56 8b7508 8d5602 668b06 83c602 6685c0 }
$sequence_1hex{ 8b4590 03c1 894d8c 6a0d 50 e8???????? }
$sequence_2hex{ 50 e8???????? 8d4dd4 e8???????? 8d4dbc e8???????? 8bc3 }
$sequence_3hex{ eb02 33db 8ac3 e8???????? c3 55 8bec }
$sequence_4hex{ 8945f0 e8???????? 8bf8 6bc61c 8b750c 56 897df8 }
$sequence_5hex{ 6a00 51 ff35???????? b8???????? 0f4305???????? 50 }
$sequence_6hex{ a1???????? 33c4 8944241c 56 57 8bfa 8bf1 }
$sequence_7hex{ 6a00 6a01 ff15???????? 8bf8 85ff 751a }
$sequence_8hex{ 50 56 ffd7 85c0 7462 8b44240c }
$sequence_9hex{ 894db0 8b048d701b4200 8975b4 8b440618 8b7514 03f2 }

Condition

7 of them and filesize < 319488

In plain words (Heuristic)

  • The file must be smaller than 319488 (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: 74cc12c7-c26c-5b07-8bf3-e61c0c3737a0

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