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MALPEDIA_Win_Buzus_Auto

autogenerated rule brought to you by yara-signator

MalwareBuzusMalpedia 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: Buzus.

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

Summary generated from the rule's metadata and condition.

Rule source

win-buzus-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Buzus_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "84cc3e01-bbd0-5bc2-9173-9fdc0de50043"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.buzus"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.buzus_auto.yar#L1-L125"
		license_url = "N/A"
		logic_hash = "9bb9e183d3e45fd5f8a6ca9a1a6dae090d02d4c89d1d9cc9c484a91a382cc272"
		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 = { 53 53 6a02 53 53 8d85ccfdffff 6800000040 }
		$sequence_1 = { 59 1bc0 59 83e007 e9???????? ff7508 be04010000 }
		$sequence_2 = { 50 e8???????? 8dbc0606010000 8b35???????? 57 }
		$sequence_3 = { ff15???????? 8bc6 59 69c018020000 }
		$sequence_4 = { e8???????? 8a85b0faffff 59 3a05???????? 59 0f85a0000000 }
		$sequence_5 = { 8d45c8 50 56 e8???????? 57 56 }
		$sequence_6 = { 6a01 58 eb60 50 ff36 e8???????? 59 }
		$sequence_7 = { 68???????? 68???????? e9???????? 8d851cfdffff 50 6804010000 }
		$sequence_8 = { 57 ff15???????? 83f8ff 0f84e5060000 56 6889000000 68???????? }
		$sequence_9 = { ff760c 8945cc ff15???????? 83c40c 83f803 8945b8 }

	condition:
		7 of them and filesize < 679936
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 53 53 6a02 53 53 8d85ccfdffff 6800000040 }
$sequence_1hex{ 59 1bc0 59 83e007 e9???????? ff7508 be04010000 }
$sequence_2hex{ 50 e8???????? 8dbc0606010000 8b35???????? 57 }
$sequence_3hex{ ff15???????? 8bc6 59 69c018020000 }
$sequence_4hex{ e8???????? 8a85b0faffff 59 3a05???????? 59 0f85a0000000 }
$sequence_5hex{ 8d45c8 50 56 e8???????? 57 56 }
$sequence_6hex{ 6a01 58 eb60 50 ff36 e8???????? 59 }
$sequence_7hex{ 68???????? 68???????? e9???????? 8d851cfdffff 50 6804010000 }
$sequence_8hex{ 57 ff15???????? 83f8ff 0f84e5060000 56 6889000000 68???????? }
$sequence_9hex{ ff760c 8945cc ff15???????? 83c40c 83f803 8945b8 }

Condition

7 of them and filesize < 679936

In plain words (Heuristic)

  • The file must be smaller than 679936 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

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

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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: 84cc3e01-bbd0-5bc2-9173-9fdc0de50043

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