YARA · Malpedia signator rules
MALPEDIA_Win_Skinnyboy_Auto
autogenerated rule brought to you by yara-signator
- Autor
- Felix Bilstein - yara-signator at cocacoding dot com
- Fecha
- 2026-05-04
- Modificada
- 2026-05-18
- Puntuación / Calidad
- 75 / 75
Qué detecta esta regla
autogenerated rule brought to you by yara-signator
Familia de malware asociada: Skinnyboy.
Define 10 patrones (0 de texto, 10 hex, 0 regex).
Resumen generado a partir de los metadatos y la condición de la regla.
Código de la regla
rule MALPEDIA_Win_Skinnyboy_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "24a64f43-deef-557c-9fd6-67c28ce40905"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.skinnyboy"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.skinnyboy_auto.yar#L1-L127"
= "N/A"
= "e1fe3c77c85dc8fb19abbee4d29db040d7e39adcf95610e368b642b3c9a51b2e"
= 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 = { 85c0 7403 50 ffd7 ffd3 6a00 }
$sequence_1 = { 0fb68098b20010 83e00f eb02 33c0 8bbdc4fdffff 6bc009 0fb6bc38b8b20010 }
$sequence_2 = { 668b444de4 6631444dd0 41 3bca 72f1 33c0 }
$sequence_3 = { 8d8278040110 8945e4 803800 8bc8 7435 8a4101 84c0 }
$sequence_4 = { 833cfdd80b011000 7515 68a00f0000 56 ff15???????? }
$sequence_5 = { 50 ffd6 8b85e0feffff 85c0 7403 50 }
$sequence_6 = { ffb55cfbffff ff15???????? 85c0 0f85d2feffff ffb55cfbffff ff15???????? ff33 }
$sequence_7 = { ff15???????? 8bf0 6a01 56 ff15???????? 8d4c2420 51 }
$sequence_8 = { 7413 8a8c1564feffff 308c15e4feffff 42 3bd0 72ed }
$sequence_9 = { ff15???????? 8d442430 50 ff15???????? 85c0 742d }
condition:
7 of them and filesize < 176128
}
Cadenas (10 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $sequence_0 | hex | { 85c0 7403 50 ffd7 ffd3 6a00 } | |
| $sequence_1 | hex | { 0fb68098b20010 83e00f eb02 33c0 8bbdc4fdffff 6bc009 0fb6bc38b8b20010 } | |
| $sequence_2 | hex | { 668b444de4 6631444dd0 41 3bca 72f1 33c0 } | |
| $sequence_3 | hex | { 8d8278040110 8945e4 803800 8bc8 7435 8a4101 84c0 } | |
| $sequence_4 | hex | { 833cfdd80b011000 7515 68a00f0000 56 ff15???????? } | |
| $sequence_5 | hex | { 50 ffd6 8b85e0feffff 85c0 7403 50 } | |
| $sequence_6 | hex | { ffb55cfbffff ff15???????? 85c0 0f85d2feffff ffb55cfbffff ff15???????? ff33 } | |
| $sequence_7 | hex | { ff15???????? 8bf0 6a01 56 ff15???????? 8d4c2420 51 } | |
| $sequence_8 | hex | { 7413 8a8c1564feffff 308c15e4feffff 42 3bd0 72ed } | |
| $sequence_9 | hex | { ff15???????? 8d442430 50 ff15???????? 85c0 742d } |
Condición
7 of them and filesize < 176128En palabras sencillas (Heurística)
- El archivo debe ocupar menos de 176128 (un límite barato que descarta archivos grandes).
- Deben coincidir al menos 7 patrones de la regla.
Prueba esta regla en tu navegador
Arrastra un archivo para escanearlo con esta regla usando YARA-X compilado a WebAssembly. No se sube nada.
Licencia y atribución
Autor: Felix Bilstein - yara-signator at cocacoding dot com
Repositorio de origen: Malpedia signator rules @ c901f97b7d
Licencia: Creative Commons Attribution-ShareAlike 4.0 (licencia del repositorio)
Obtenida a través de YARA Forge 20260927, que añade a los nombres el prefijo de la fuente y campos meta normalizados.
Id de la regla: 24a64f43-deef-557c-9fd6-67c28ce40905
Metadatos
| 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 |
Etiquetas:FILE
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