Skip to content

YARA · Malpedia signator rules

MALPEDIA_Win_Dubrute_Auto

autogenerated rule brought to you by yara-signator

MalwareDubruteMalpedia 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: Dubrute.

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

Summary generated from the rule's metadata and condition.

Rule source

win-dubrute-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Dubrute_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "c5adb48e-7e94-5301-bde8-7cb77016d9d2"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.dubrute"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.dubrute_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "3a0ed5e631105bbcaa56a02e98ebb80fb00baef1952d6774966f9fe8b4d0a2d4"
		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 = { 83c41c a5 837dccff 0f8485010000 33f6 3975cc 0f85b2000000 }
		$sequence_1 = { 83450828 43 3b5e48 7cc3 837d1000 5b 7508 }
		$sequence_2 = { 8bec 51 51 56 8b750c 6a08 8d45f8 }
		$sequence_3 = { 6aff 68???????? ffd7 804df080 59 59 8945ec }
		$sequence_4 = { 7405 48 740a eb18 8b4514 832000 eb10 }
		$sequence_5 = { ff25???????? 8d4df0 ff25???????? 8d4dec ff25???????? 8d4df0 ff25???????? }
		$sequence_6 = { ffd7 8b4e34 8d45d8 50 c745d8e6000000 c745dc0a000000 c745e0ad010000 }
		$sequence_7 = { 57 ff15???????? e8???????? 84c0 7507 53 ff15???????? }
		$sequence_8 = { 5e 5d c3 55 8bec f6451401 56 }
		$sequence_9 = { ffd3 83c40c 8b8edc000000 8b3d???????? 50 c745fc01000000 ffd7 }

	condition:
		7 of them and filesize < 598016
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 83c41c a5 837dccff 0f8485010000 33f6 3975cc 0f85b2000000 }
$sequence_1hex{ 83450828 43 3b5e48 7cc3 837d1000 5b 7508 }
$sequence_2hex{ 8bec 51 51 56 8b750c 6a08 8d45f8 }
$sequence_3hex{ 6aff 68???????? ffd7 804df080 59 59 8945ec }
$sequence_4hex{ 7405 48 740a eb18 8b4514 832000 eb10 }
$sequence_5hex{ ff25???????? 8d4df0 ff25???????? 8d4dec ff25???????? 8d4df0 ff25???????? }
$sequence_6hex{ ffd7 8b4e34 8d45d8 50 c745d8e6000000 c745dc0a000000 c745e0ad010000 }
$sequence_7hex{ 57 ff15???????? e8???????? 84c0 7507 53 ff15???????? }
$sequence_8hex{ 5e 5d c3 55 8bec f6451401 56 }
$sequence_9hex{ ffd3 83c40c 8b8edc000000 8b3d???????? 50 c745fc01000000 ffd7 }

Condition

7 of them and filesize < 598016

In plain words (Heuristic)

  • The file must be smaller than 598016 (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: c5adb48e-7e94-5301-bde8-7cb77016d9d2

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