YARA · Malpedia signator rules
MALPEDIA_Win_Royalcli_Auto
autogenerated rule brought to you by yara-signator
MalwareRoyalcliMalpedia 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: Royalcli.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-royalcli-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Royalcli_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "7501bc95-5970-51f4-8011-8d170714f8a7"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.royalcli"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.royalcli_auto.yar#L1-L125"
= "N/A"
= "a49cc79a85580805d992a2da818540011215a14958a82e3f5a04eda36df1756a"
= 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 = { ffd6 b907000000 8db57cf7ffff 8dbd60f7ffff f3a5 }
$sequence_1 = { ffd6 8d8df4f6ffff 51 ffd6 }
$sequence_2 = { 6804010000 8d95e0feffff 52 68???????? 68???????? 68???????? ffd7 }
$sequence_3 = { 8b4808 334804 8b500c 3310 8d8178563412 356699aa55 03c2 }
$sequence_4 = { 8be5 5d c3 53 56 8d85d8fdffff 50 }
$sequence_5 = { 03ca 32d8 32d9 8ac3 8b5d08 88041f 47 }
$sequence_6 = { 8bd0 83e01f c1fa05 8b1495c04b4100 59 c1e006 }
$sequence_7 = { 6a00 57 e8???????? 83c40c 8d85a4feffff }
$sequence_8 = { 57 56 e8???????? c1f805 56 8d3c85c04b4100 }
$sequence_9 = { 8bf9 85c9 7428 0fb61c32 8bc8 c1e90f 03c0 }
condition:
7 of them and filesize < 204800
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ffd6 b907000000 8db57cf7ffff 8dbd60f7ffff f3a5 } | |
| $sequence_1 | hex | { ffd6 8d8df4f6ffff 51 ffd6 } | |
| $sequence_2 | hex | { 6804010000 8d95e0feffff 52 68???????? 68???????? 68???????? ffd7 } | |
| $sequence_3 | hex | { 8b4808 334804 8b500c 3310 8d8178563412 356699aa55 03c2 } | |
| $sequence_4 | hex | { 8be5 5d c3 53 56 8d85d8fdffff 50 } | |
| $sequence_5 | hex | { 03ca 32d8 32d9 8ac3 8b5d08 88041f 47 } | |
| $sequence_6 | hex | { 8bd0 83e01f c1fa05 8b1495c04b4100 59 c1e006 } | |
| $sequence_7 | hex | { 6a00 57 e8???????? 83c40c 8d85a4feffff } | |
| $sequence_8 | hex | { 57 56 e8???????? c1f805 56 8d3c85c04b4100 } | |
| $sequence_9 | hex | { 8bf9 85c9 7428 0fb61c32 8bc8 c1e90f 03c0 } |
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
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.
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: 7501bc95-5970-51f4-8011-8d170714f8a7
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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