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MALPEDIA_Win_Royal_Dns_Auto

autogenerated rule brought to you by yara-signator

MalwareRoyal DnsMalpedia 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: Royal Dns.

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

Summary generated from the rule's metadata and condition.

Rule source

win-royal-dns-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Royal_Dns_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "81aa708c-03d8-569e-9839-f9dc97865af3"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.royal_dns"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.royal_dns_auto.yar#L1-L124"
		license_url = "N/A"
		logic_hash = "701633f4581820c2bdfa58bdd811c787d073106573424af0015f2f793828aaf7"
		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 = { 8d8dbffdffff e8???????? 8bf0 83c404 85f6 0f8488000000 68ff000000 }
		$sequence_1 = { 33ff 33c9 33f6 84db 744c 90 }
		$sequence_2 = { 83e01f c1f905 8b0c8d80502500 c1e006 8d440104 8020fe ff36 }
		$sequence_3 = { 0fb6730c 83c40c 56 83c30d 8d85d8fcffff 53 }
		$sequence_4 = { 03049580502500 eb05 b8???????? f6400420 }
		$sequence_5 = { 83c102 2bc8 8817 7434 }
		$sequence_6 = { 013d???????? 89410c e8???????? 833800 a3???????? bf03000000 7530 }
		$sequence_7 = { ebde 8bc8 83e01f c1f905 8b0c8d80502500 c1e006 0fbe440104 }
		$sequence_8 = { c0f803 2403 02c9 0ac8 8a45e0 241f 884def }
		$sequence_9 = { 8b0c8d80502500 83e01f c1e006 f644080401 74cd }

	condition:
		7 of them and filesize < 204800
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8d8dbffdffff e8???????? 8bf0 83c404 85f6 0f8488000000 68ff000000 }
$sequence_1hex{ 33ff 33c9 33f6 84db 744c 90 }
$sequence_2hex{ 83e01f c1f905 8b0c8d80502500 c1e006 8d440104 8020fe ff36 }
$sequence_3hex{ 0fb6730c 83c40c 56 83c30d 8d85d8fcffff 53 }
$sequence_4hex{ 03049580502500 eb05 b8???????? f6400420 }
$sequence_5hex{ 83c102 2bc8 8817 7434 }
$sequence_6hex{ 013d???????? 89410c e8???????? 833800 a3???????? bf03000000 7530 }
$sequence_7hex{ ebde 8bc8 83e01f c1f905 8b0c8d80502500 c1e006 0fbe440104 }
$sequence_8hex{ c0f803 2403 02c9 0ac8 8a45e0 241f 884def }
$sequence_9hex{ 8b0c8d80502500 83e01f c1e006 f644080401 74cd }

Condition

7 of them and filesize < 204800

In plain words (Heuristic)

  • The file must be smaller than 204800 (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.

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: 81aa708c-03d8-569e-9839-f9dc97865af3

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