YARA · Volexity threat-intel
VOLEXITY_Informational_Win_3Cx_Msi
Detects 3CX installers created in March 2023, 3CX was known to be compromised at this time.
- Autor
- threatintel@volexity.com
- Fecha
- 2023-03-30
- Puntuación / Calidad
- 75 / 80
Qué detecta esta regla
Detects 3CX installers created in March 2023, 3CX was known to be compromised at this time.
Define 3 patrones (2 de texto, 1 hex, 0 regex).
Resumen generado a partir de los metadatos y la condición de la regla.
Código de la regla
rule VOLEXITY_Informational_Win_3Cx_Msi : UTA0040
{
meta:
= "Detects 3CX installers created in March 2023, 3CX was known to be compromised at this time."
= "threatintel@volexity.com"
= "ac26e7b1-61eb-5074-bcda-46d714bdba4c"
= "2023-03-30"
= "2023-03-30"
= "https://www.reddit.com/r/crowdstrike/comments/125r3uu/20230329_situational_awareness_crowdstrike/"
= "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2023/2023-03-30 3CX/indicators/rules.yar#L134-L152"
= "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
= "aa124a4b4df12b34e74ee7f6c683b2ebec4ce9a8edcf9be345823b4fdcf5d868"
= "c04de2653ef587f27c7ebf058c6f6c345e16b67f36ccc4306bc49f8c4394728e"
= 75
= 80
= "UTA0040"
= 0
= "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"
strings:
$cert = { 1B 66 11 DF 9C 9A 4D 6E CC 8E D5 0C 9B 91 78 73 }
$app = "3CXDesktopApp.exe"
$data = "202303"
condition:
all of them
}
Cadenas (3 patrones)
| Identificador | Tipo | Valor | Modificadores |
|---|---|---|---|
| $cert | hex | { 1B 66 11 DF 9C 9A 4D 6E CC 8E D5 0C 9B 91 78 73 } | |
| $app | texto | "3CXDesktopApp.exe" | |
| $data | texto | "202303" |
Condición
all of themEn palabras sencillas (Heurística)
- Deben coincidir todos los 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.
Referencias
Hashes de muestras
Hashes de las muestras que el autor lista en los metadatos de la regla (búscalos en tu plataforma de threat intelligence).
- aa124a4b4df12b34e74ee7f6c683b2ebec4ce9a8edcf9be345823b4fdcf5d868
Licencia y atribución
Autor: threatintel@volexity.com
Repositorio de origen: Volexity threat-intel @ 3a9d0b5245
Licencia: BSD 2-Clause License (indicada en los metadatos de la regla)
“See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt”
Aviso de copyright: Copyright 2022 by Volexity, Inc.
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: ac26e7b1-61eb-5074-bcda-46d714bdba4c
Metadatos
| memory_suitable | 0 |
|---|
Etiquetas:UTA0040
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