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YARA · BlackBerry Research & Intelligence (via Open-Source-YARA-rules)

BLACKBERRY_Boratratinformation

Detects BoratRAT Information Module

GenéricaBlackBerry Research & Intelligence (via Open-Source-YARA-rules)Apache License 2.0Compila con YARA-X (con avisos)
Autor
BlackBerry Threat Research Team
Fecha
2022-04-13
Modificada
2022-07-07
Puntuación / Calidad
75 / 85

Qué detecta esta regla

Detects BoratRAT Information Module

Objetivos: PE de Windows.

Define 7 patrones (6 de texto, 1 hex, 0 regex).

YARA-X dice: warning[text_as_hex]: hex pattern could be written as text literal

Resumen generado a partir de los metadatos y la condición de la regla.

Código de la regla

boratratinformation.yarApache License 2.0
rule BLACKBERRY_Boratratinformation : FILE
{
	meta:
		description = "Detects BoratRAT Information Module"
		author = "BlackBerry Threat Research Team"
		id = "2bd2ec00-3aa5-5f41-9e5b-713398a35b4a"
		date = "2022-04-13"
		modified = "2022-07-07"
		reference = "https://blogs.blackberry.com/en/2022/04/threat-thursday-boratrat"
		source_url = "https://github.com/mikesxrs/Open-Source-YARA-rules/blob/ec0056f767db98bf6d5fd63877ad51fb54d350e9/Blackberry/BoratRATInformation.yar#L1-L45"
		license_url = "N/A"
		logic_hash = "17545a0834e339039361802a6d675303a975b9de013620068f1a516e49e3138f"
		score = 75
		quality = 85
		tags = "FILE"
		license = "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"

	strings:
		$s1 = "set_UseShellExecute"
		$s2 = "execCMD"
		$s3 = "hostname" wide
		$s4 = "ipconfig" wide
		$s5 = "tasklist" wide
		$s6 = "arp -a" wide
		$sp = {43 3A 5C 55 73 65 72 73 5C 41 64 6D 69 6E 69 

                   73 74 72 61 74 6F 72 5C 44 6F 77 6E 6C 6F 61 

                   64 73 5C 53 61 6E 74 61 52 61 74 2D 6D 61 69 

                   6E 5C 42 69 6E 61 72 69 65 73 5C 52 65 6C 65  

                   61 73 65 5C 50 6C 75 67 69 6E 73 5C 49 6E 66 

                   6F 72 6D 61 74 69 6F 6E 2E 70 64 62}

	condition:
		uint16( 0 ) == 0x5a4d and all of them
}

Cadenas (7 patrones)

IdentificadorTipoValorModificadores
$s1texto"set_UseShellExecute"
$s2texto"execCMD"
$s3texto"hostname"wide
$s4texto"ipconfig"wide
$s5texto"tasklist"wide
$s6texto"arp -a"wide
$sphex{43 3A 5C 55 73 65 72 73 5C 41 64 6D 69 6E 69 73 74 72 61 74 6F 72 5C 44 6F 77 6E 6C 6F 61 64 73 5C 53 61 6E 74 61 52 …

Condición

uint16( 0 ) == 0x5a4d and all of them

En palabras sencillas (Heurística)

  • El archivo debe empezar por «MZ»: un ejecutable de Windows (PE).
  • Deben coincidir todos los patrones de la regla.

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Referencias

Licencia y atribución

Autor: BlackBerry Threat Research 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”

Regla original

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: 2bd2ec00-3aa5-5f41-9e5b-713398a35b4a

Etiquetas:FILE

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