YARA · Malpedia signator rules
MALPEDIA_Win_Bka_Trojaner_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: Bka Trojaner.
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_Bka_Trojaner_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "ab7d611e-8589-59c0-a128-3e6ed12e6b70"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.bka_trojaner"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.bka_trojaner_auto.yar#L1-L123"
= "N/A"
= "ec040cf4ee2c7fb0b4d119bcc53a7e6d4c94956afaf3fdc4fa12f39cdf46d9cf"
= 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 = { e8???????? 8bf0 ff15???????? 85f6 89442408 744c 53 }
$sequence_1 = { 51 ffd5 6a0a ff15???????? 6a00 }
$sequence_2 = { 8b742454 6808020000 68???????? 6a00 8935???????? ff15???????? }
$sequence_3 = { 750c 8b44240c 8d9078ffffff eb71 b904000000 bf???????? 8bf0 }
$sequence_4 = { 56 e8???????? 83c408 8b54241c 55 2bc6 }
$sequence_5 = { ff15???????? 8b4570 85c0 750f 8b4554 6a0c 50 }
$sequence_6 = { 85c0 7d35 8b07 8b10 }
$sequence_7 = { 8bca 83e103 8d442410 50 }
$sequence_8 = { 56 53 6a00 51 8b4c2464 2bd0 52 }
$sequence_9 = { 744d 81fb05020000 7445 81fb06020000 743d 81fb07020000 }
condition:
7 of them and filesize < 221184
}
Cadenas (10 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $sequence_0 | hex | { e8???????? 8bf0 ff15???????? 85f6 89442408 744c 53 } | |
| $sequence_1 | hex | { 51 ffd5 6a0a ff15???????? 6a00 } | |
| $sequence_2 | hex | { 8b742454 6808020000 68???????? 6a00 8935???????? ff15???????? } | |
| $sequence_3 | hex | { 750c 8b44240c 8d9078ffffff eb71 b904000000 bf???????? 8bf0 } | |
| $sequence_4 | hex | { 56 e8???????? 83c408 8b54241c 55 2bc6 } | |
| $sequence_5 | hex | { ff15???????? 8b4570 85c0 750f 8b4554 6a0c 50 } | |
| $sequence_6 | hex | { 85c0 7d35 8b07 8b10 } | |
| $sequence_7 | hex | { 8bca 83e103 8d442410 50 } | |
| $sequence_8 | hex | { 56 53 6a00 51 8b4c2464 2bd0 52 } | |
| $sequence_9 | hex | { 744d 81fb05020000 7445 81fb06020000 743d 81fb07020000 } |
Condición
7 of them and filesize < 221184En palabras sencillas (Heurística)
- El archivo debe ocupar menos de 221184 (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: ab7d611e-8589-59c0-a128-3e6ed12e6b70
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
Reglas relacionadas
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04