YARA · BlackBerry Research & Intelligence (via Open-Source-YARA-rules)
BLACKBERRY_Mal_Infostealer_EXE_Jupyter_Cert_36Ff
Detects Jupter executables by certificate OOO Sistema (36ff)
- Autor
- BlackBerry Research & Intelligence Team
- Fecha
- 2021-10-14
- Modificada
- 2022-07-06
- Puntuación / Calidad
- 75 / 85
Qué detecta esta regla
Detects Jupter executables by certificate OOO Sistema (36ff)
Objetivos: PE de Windows.
No tiene patrones: decide solo la condición (módulos, propiedades del archivo u otras reglas). Módulos YARA usados: pe.
YARA-X dice: warning[deprecated_field]: field `number_of_signatures` is deprecated
Resumen generado a partir de los metadatos y la condición de la regla.
Código de la regla
Incluye los imports necesarios para compilarla por sí sola.
import "pe"
rule BLACKBERRY_Mal_Infostealer_EXE_Jupyter_Cert_36Ff : FILE
{
meta:
= "Detects Jupter executables by certificate OOO Sistema (36ff)"
= "BlackBerry Research & Intelligence Team"
= "5671b149-4eb6-5b13-92de-01b71a001802"
= "2021-10-14"
= "2022-07-06"
= "https://blogs.blackberry.com/en/2022/01/threat-thursday-jupyter-infostealer-is-a-master-of-disguise"
= "https://github.com/mikesxrs/Open-Source-YARA-rules/blob/ec0056f767db98bf6d5fd63877ad51fb54d350e9/Blackberry/Mal_Infostealer_EXE_Jupyter_Cert_36ff.yar#L3-L18"
= "N/A"
= "8f543c592f23257bda8902229a9a8a735bb593254b279a1786fc85734cd56905"
= 75
= 85
= "FILE"
= "This Yara rule is provided under the Apache License 2.0 (https://www.apache.org/licenses/LICENSE-2.0) and open to any user or organization, as long as you use it under this license and ensure originator credit in any derivative to The BlackBerry Research & Intelligence Team"
condition:
uint16( 0 ) == 0x5a4d and for any i in ( 0 .. pe.number_of_signatures ) : ( pe.signatures [ i ] . issuer contains "Certum Extended Validation Code Signing CA SHA2" and pe.signatures [ i ] . serial == "36:ff:67:4e:b3:05:e9:9c:35:56:5f:a3:01:d5:c4:b0" )
}
Condición
uint16( 0 ) == 0x5a4d and for any i in ( 0 .. pe.number_of_signatures ) : ( pe.signatures [ i ] . issuer contains "Certum Extended Validation Code Signing CA SHA2" and pe.signatures [ i ] . serial == "36:ff:67:4e:b3:05:e9:9c:35:56:5f:a3:01:d5:c4:b0" )En palabras sencillas (Heurística)
- El archivo debe empezar por «MZ»: un ejecutable de Windows (PE).
- Un bucle for comprueba una propiedad sobre varias coincidencias o elementos.
- Usa el módulo pe.
- Comprueba la firma Authenticode.
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: BlackBerry Research & Intelligence Team
Repositorio de origen: BlackBerry Research & Intelligence (via Open-Source-YARA-rules) @ ec0056f767
Licencia: Apache License 2.0 (indicada en los metadatos de la regla)
“This Yara rule is provided under the Apache License 2.0 (https://www.apache.org/licenses/LICENSE-2.0) and open to any user or organization, as long as you use it under this license and ensure originator credit in any derivative to The BlackBerry Research & Intelligence Team”
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: 5671b149-4eb6-5b13-92de-01b71a001802
Etiquetas:FILE