YARA · Malpedia signator rules
MALPEDIA_Win_Medusalocker_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: Medusalocker.
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_Medusalocker_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "0b72d66d-a4ee-5c7f-bfd5-1998b487f49b"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.medusalocker"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.medusalocker_auto.yar#L1-L125"
= "N/A"
= "ce714b574ed071a3b22689fee9f7dd0fa05c9e6aa02bec727f2d694ccfe22836"
= 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 = { 7419 6a00 8b45fc 8b480c 51 }
$sequence_1 = { 83c10c e8???????? c745fcffffffff 8d4de4 e8???????? 8b4df4 64890d00000000 }
$sequence_2 = { 8b4514 50 e8???????? 83c404 50 8bcf }
$sequence_3 = { 6a00 8b4df8 83c108 51 ff15???????? }
$sequence_4 = { 894dc0 837dc01a 0f83a7000000 0fb755c0 }
$sequence_5 = { 51 8d4d08 e8???????? 83f808 7409 c745fc01000000 eb07 }
$sequence_6 = { 51 894dfc 68???????? 8b4d08 e8???????? 0fb6c0 85c0 }
$sequence_7 = { e8???????? 8945f8 8b45f8 8b4d08 3b4814 774a }
$sequence_8 = { 8b8d5cffffff e8???????? 8d55d8 899550ffffff 8b8d50ffffff e8???????? 898560ffffff }
$sequence_9 = { e8???????? 83c408 8b00 8945c4 8d4dca 51 8d55d0 }
condition:
7 of them and filesize < 1433600
}
Cadenas (10 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $sequence_0 | hex | { 7419 6a00 8b45fc 8b480c 51 } | |
| $sequence_1 | hex | { 83c10c e8???????? c745fcffffffff 8d4de4 e8???????? 8b4df4 64890d00000000 } | |
| $sequence_2 | hex | { 8b4514 50 e8???????? 83c404 50 8bcf } | |
| $sequence_3 | hex | { 6a00 8b4df8 83c108 51 ff15???????? } | |
| $sequence_4 | hex | { 894dc0 837dc01a 0f83a7000000 0fb755c0 } | |
| $sequence_5 | hex | { 51 8d4d08 e8???????? 83f808 7409 c745fc01000000 eb07 } | |
| $sequence_6 | hex | { 51 894dfc 68???????? 8b4d08 e8???????? 0fb6c0 85c0 } | |
| $sequence_7 | hex | { e8???????? 8945f8 8b45f8 8b4d08 3b4814 774a } | |
| $sequence_8 | hex | { 8b8d5cffffff e8???????? 8d55d8 899550ffffff 8b8d50ffffff e8???????? 898560ffffff } | |
| $sequence_9 | hex | { e8???????? 83c408 8b00 8945c4 8d4dca 51 8d55d0 } |
Condición
7 of them and filesize < 1433600En palabras sencillas (Heurística)
- El archivo debe ocupar menos de 1433600 (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: 0b72d66d-a4ee-5c7f-bfd5-1998b487f49b
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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