YARA · Malpedia signator rules
MALPEDIA_Win_Cur1_Downloader_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: Cur1 Downloader.
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_Cur1_Downloader_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "9711944b-1c2e-5261-8908-a67f06a6fed7"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.cur1_downloader"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.cur1_downloader_auto.yar#L1-L125"
= "N/A"
= "6592bb1b73c68eb722ff838e515bc632ed31472101cdddf4635e60e41a4a016d"
= 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 = { 488bc1 4889842498000000 488b442460 4883c008 4889442458 }
$sequence_1 = { c68424b402000061 c68424b502000064 c68424b602000045 c68424b702000078 c68424b802000000 }
$sequence_2 = { ff15???????? 488905???????? 488d9424b0030000 488b4c2420 ff15???????? 488905???????? 488d942468030000 }
$sequence_3 = { c684243801000065 c684243901000079 c684243a01000045 c684243b01000078 c684243c01000057 }
$sequence_4 = { 488b9424d0000000 488d8c2498000000 e8???????? 488d8c24d0010000 e8???????? 90 488d8c2438010000 }
$sequence_5 = { c684241d0200006e c684241e02000065 c684241f02000074 c684242002000052 c684242102000065 c684242202000061 }
$sequence_6 = { 8b8c2468010000 e8???????? 4889442430 c744242040000000 488d442420 4889442428 4c8b442428 }
$sequence_7 = { c684245502000073 c684245602000074 c684245702000041 c684245802000000 c684242003000049 }
$sequence_8 = { 41b804010000 488d942400030000 33c9 ff15???????? c744245801000000 e8???????? 833d????????01 }
$sequence_9 = { c68424a101000072 c68424a201000065 c68424a301000061 c68424a401000074 c68424a501000065 c68424a601000050 c68424a701000072 }
condition:
7 of them and filesize < 402432
}
Cadenas (10 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $sequence_0 | hex | { 488bc1 4889842498000000 488b442460 4883c008 4889442458 } | |
| $sequence_1 | hex | { c68424b402000061 c68424b502000064 c68424b602000045 c68424b702000078 c68424b802000000 } | |
| $sequence_2 | hex | { ff15???????? 488905???????? 488d9424b0030000 488b4c2420 ff15???????? 488905???????? 488d942468030000 } | |
| $sequence_3 | hex | { c684243801000065 c684243901000079 c684243a01000045 c684243b01000078 c684243c01000057 } | |
| $sequence_4 | hex | { 488b9424d0000000 488d8c2498000000 e8???????? 488d8c24d0010000 e8???????? 90 488d8c2438010000 } | |
| $sequence_5 | hex | { c684241d0200006e c684241e02000065 c684241f02000074 c684242002000052 c684242102000065 c684242202000061 } | |
| $sequence_6 | hex | { 8b8c2468010000 e8???????? 4889442430 c744242040000000 488d442420 4889442428 4c8b442428 } | |
| $sequence_7 | hex | { c684245502000073 c684245602000074 c684245702000041 c684245802000000 c684242003000049 } | |
| $sequence_8 | hex | { 41b804010000 488d942400030000 33c9 ff15???????? c744245801000000 e8???????? 833d????????01 } | |
| $sequence_9 | hex | { c68424a101000072 c68424a201000065 c68424a301000061 c68424a401000074 c68424a501000065 c68424a601000050 c68424a701000072 } |
Condición
7 of them and filesize < 402432En palabras sencillas (Heurística)
- El archivo debe ocupar menos de 402432 (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: 9711944b-1c2e-5261-8908-a67f06a6fed7
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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