YARA · Malpedia signator rules
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:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "81aa708c-03d8-569e-9839-f9dc97865af3"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.royal_dns"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.royal_dns_auto.yar#L1-L124"
= "N/A"
= "701633f4581820c2bdfa58bdd811c787d073106573424af0015f2f793828aaf7"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "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)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8d8dbffdffff e8???????? 8bf0 83c404 85f6 0f8488000000 68ff000000 } | |
| $sequence_1 | hex | { 33ff 33c9 33f6 84db 744c 90 } | |
| $sequence_2 | hex | { 83e01f c1f905 8b0c8d80502500 c1e006 8d440104 8020fe ff36 } | |
| $sequence_3 | hex | { 0fb6730c 83c40c 56 83c30d 8d85d8fcffff 53 } | |
| $sequence_4 | hex | { 03049580502500 eb05 b8???????? f6400420 } | |
| $sequence_5 | hex | { 83c102 2bc8 8817 7434 } | |
| $sequence_6 | hex | { 013d???????? 89410c e8???????? 833800 a3???????? bf03000000 7530 } | |
| $sequence_7 | hex | { ebde 8bc8 83e01f c1f905 8b0c8d80502500 c1e006 0fbe440104 } | |
| $sequence_8 | hex | { c0f803 2403 02c9 0ac8 8a45e0 241f 884def } | |
| $sequence_9 | hex | { 8b0c8d80502500 83e01f c1e006 f644080401 74cd } |
Condition
7 of them and filesize < 204800In 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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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)
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
| 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 |
Tags:FILE
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